{"as_of":"2026-08-12T03:42:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:39e8e4229cade3a9bb62e3b4bbb79b3a12986d350fb09b031d946f1a70126a4b","coverage":[{"denominator":40,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":40,"source":"paper_references, paper_reference_links","source_observed_at":"2026-07-12T11:08:37.391550Z","state":"measured"},{"denominator":40,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":40,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-11T06:34:44.6726+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/2607.02557/citation-record","integrity":"/paper/2607.02557/integrity","json":"/paper/2607.02557/citation-record.json","paper":"/paper/2607.02557"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Ann., vol","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:bb2da1f8d6bd5ccade3f2ca5dd304d30f13825c254f493ebc151ac651924ee8d","observation_id":"97e9ec3f-8eeb-4d79-90b2-7210d30c30dd","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:60216a6fb317d51f29e5e78b315ffa89d801e3c5c7158aeef93c13836ff0c898","observation_id":"dd3e94a7-c5a7-4005-abbb-f1de186d503d","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Landau, ¨Uber die Darstellung definiter Funktionen durch Quadrate, Mathematische Annalen, vol","venue":null,"work_id":null,"year":1906},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:a9270b43a987b1d074870c2d7d80403c8c69f7a60419d11254c2a233f3e154d5","observation_id":"522af360-ed8d-4c50-b2b9-3a928fbe103b","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":1967},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:ea177ce270225e30ac8aab594626baf43a71fb1573fdc47fee39a173ff431728","observation_id":"39ee4ba9-9c03-4153-a52f-a001792e826e","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Youla, On the factorization of rational matrices, IEEE Trans","venue":null,"work_id":null,"year":1961},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:ea87b2c25fa8cb0814e1a7320f7c85b1fba0446db4f540886222c9099fd96623","observation_id":"dd57e19d-e984-4adb-91e6-8c7a6c1cfc24","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:a59fded7185eb315d145e27ac7ffab432ffe3218b45465718b1094a2254e6e3e","observation_id":"e900c0f5-e5c4-47c7-be9b-b2ce45d36d53","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Koga, Synthesis of finite passiven-ports with prescribed two variable reactance matrices, IEEE Trans","venue":null,"work_id":null,"year":1966},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:e1c92a18232b397f4b1b2d9f77634f5a299227da84097195681a9243436d5d18","observation_id":"8105f5f3-de9d-4fb4-976e-c27f8b9d43cf","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu, A constructive algorithm for 2-D spectral factorization with rational spectral factors, IEEE Transactions on Circuits and Systems - Part I, vol","venue":null,"work_id":null,"year":2000},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:4dd179cbdc239565fc8bf6c24217a4fd6ba268bdc39197531d0905729036fab0","observation_id":"a3f7a804-8a44-4230-8b49-e64b889b381d","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Fettweis and S","venue":null,"work_id":null,"year":1987},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:6d29f5eb80ad5e6bffcf2e593bca2308dbdac9720996f6f8cf5588d15ebd53bf","observation_id":"e316f39a-a0d0-46f2-8154-f3af21c6229c","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Fettweis, Elementary symmetric functions and positive functions of several variables, Proc","venue":null,"work_id":null,"year":1989},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:2ed7c02126b3147c58d09c96cb1243a8761041c0ed981255c56345dca639b2b4","observation_id":"cb052b4c-ab05-4298-b252-8a8ef9cabeab","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu and A","venue":null,"work_id":null,"year":1987},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:e5e813fcf247ef4874bc5b576eba8ff1bf9d1cd88b218d65bc83781459614bbb","observation_id":"5292e80a-d52c-4e6a-ab8e-472adaf09f37","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu, New results on stable multidimensional polynomials, Part III: State Space Interpretations IEEE Transactions on Circuits and Systems, vol","venue":null,"work_id":null,"year":1991},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:8fdb92ee5b4dd485cf7c69f1ab3a92f4c9e40a01b4e593b0e7a3e65a92d20028","observation_id":"ba464553-a676-427f-8bf8-6aeb579b53f4","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu, A framework for 2-D hyperstability theory based provably con- vergent adaptive 2-D IIR filetring, SIAM J","venue":null,"work_id":null,"year":1991},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:e19752df2628f47afa37c235882d04e96fb717de4c1b21610558619f16fd5d5c","observation_id":"1fcbb93e-049e-4d15-a6ab-d8cfedca5410","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu and A","venue":null,"work_id":null,"year":1989},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:4dd4c61ea808d4c6860a294d3adde1aa56c3ef4282e54338c043762c1ea1c71f","observation_id":"5aa95be0-9365-473e-a907-66ef83de4582","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Basu, Multi-dimensional filter banks and wavelets: a system theo- retic perspective, J","venue":null,"work_id":null,"year":1998},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:463a8b8dd6b9dfe5bab2e044638646d4b1a457b6f9b21e4ae5efe1fd5239c815","observation_id":"4772bec6-dee3-4abe-9dad-0ea99350fea2","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1090/conm/253/03936","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"253, 2000","venue":"Contemporary mathematics - American Mathematical Society","work_id":"109c53cb-e528-4e17-bff4-4c60951dfdf7","year":2000},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:acc74d4175abda428f9c6f79cfbcd5b1c2547f53308ae2cd8e47b4c2241866f8","observation_id":"591a5e7e-7cc7-4a3d-8666-c4d8bc5302fe","resolution":{"observed_at":"2026-07-12T11:08:51.055090Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-11T06:34:44.6726+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":2005},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:4ac5f5f1000fa5b065e08c1d5a26c0d6eb03532eb4b10d1e439116ab6aa2debd","observation_id":"3c19c67d-a4e6-4865-b544-d2343a127a6e","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":2006},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:4428c630f5dd8be9a6821d51477a5e708f3fb50a635bc48e3ed8fd900353a766","observation_id":"f47f30e2-00a7-4722-b65c-a1744f5e76be","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Lasserre, A Sum of Squares Approximation of Nonnegative Poly- nomials, SIAM review, pp.651-669, vol","venue":null,"work_id":null,"year":2007},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:bd4ba70e423a51b488c733505792219a98566172e4fbc64076ff583b6b84847a","observation_id":"60265805-0afb-44f0-a5cc-8dddc0aa979d","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":1982},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:3878ffb7541d5be779af6a6801f11c95025af5bdc655263e77511a9829576d15","observation_id":"bc7ce7c0-9315-469e-8dc2-d3885ecb2ac8","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"146, 2000","venue":null,"work_id":null,"year":2000},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:8547edba6d4069cae6d4a32b6641e06348b194601a0b2643b116001e2ba4c8ff","observation_id":"543a42d1-08f7-499c-bdd1-2be60e5b43e8","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":2008},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:2b870f749b850b853f74fa07eeab91d0dd3388e3a51b57f217b3c0466912e6a3","observation_id":"b16a7956-e82c-432e-9e5c-2e77d4a5d08c","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Belevitch,Classical Network Theory, Holden-Day, San Fransisco, 1968","venue":null,"work_id":null,"year":1968},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:8b2f479f489fdd483a472b08259614353f53ab9eac04e68975a4b3fdfe4cf064","observation_id":"2b0bd7ec-cc8e-421f-bebd-de0ba3082214","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Kailath,Linear Systems Theory, Prentice Hall, 1982","venue":null,"work_id":null,"year":1982},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:912f437c71a85e14ba046b46cfd2e7e9cdf909ca6c217630816bb9e27be46e13","observation_id":"e9e9338d-1ab1-4119-8214-f8d47a778bf4","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Oono, and K","venue":null,"work_id":null,"year":1954},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:1d098bd600c6ae84de78a53f4c62221474d9bb75e7cdb1050ce0a902fc540ec7","observation_id":"4e5d71e1-d38e-4201-8517-e89a47a8a915","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Kummert, The synthesis of two-dimensional passive n-ports contain- ing lumped elements, J","venue":null,"work_id":null,"year":1990},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:20442da279c0c054c77a4684040384b1811b52bdd52c2395169be0c4bf29a7da","observation_id":"719c0e47-8624-4d7e-aabe-c818416e0fad","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Kummert, On the synthesis of multidimensional reactance multi- ports, IEEE Transactions on Circuits and Systems, pp","venue":null,"work_id":null,"year":1991},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:350f24f7a385b1f510e3b1a2c9ad0c68a337c12992fcba975d98978415da66b7","observation_id":"88c93a0d-beb0-4e97-9457-35a9c3a6f419","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Kummert, The synthesis of 3-D lossless first-order one ports with lumped elements, IEEE Trans","venue":null,"work_id":null,"year":1989},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:be981ba174632c4ef28a106bb36a163cda73d72e0613f593fd45186667d3cf2a","observation_id":"dd27ee25-7b75-4d38-85c2-c510e1ef9ab1","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Kummert, Spectral factorization of two-variable para-Herminitian polynomial matrices, Multidimensional Systems and Signal Processing, vol","venue":null,"work_id":null,"year":1990},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:854eadc8ab0d9757ea6766acc441bfd14933d4dfec6d72cb87c3825d5f2621f3","observation_id":"16771e90-1709-4fe0-b045-91fbe4d602b7","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Fettweis and A","venue":null,"work_id":null,"year":1992},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:10df5f9e51e0159092788f8952ba51bf794e56bb7dd852bc83072c7ec00ce8c4","observation_id":"053f096f-5f90-4aaa-9c34-5cf520ac0787","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Vidyasagar,Control System Synthesis - a Factorization Approach, MIT Press, 1986","venue":null,"work_id":null,"year":1986},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:01e2994841254be2624e957043c4f32709cecb41d2e77669c6a982585c7a2862","observation_id":"432fa86c-17a2-4d15-801f-4dbf6bdeb77b","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Dewilde and E","venue":null,"work_id":null,"year":1980},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:0b9e42bf19e297675b252e24bc372100a7704f1d7b68684e3feed081c657f644","observation_id":"d3993fd3-c613-4d1b-8141-dfa0ed63f92a","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Dewilde, V","venue":null,"work_id":null,"year":1971},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:1e43aa26fae2b682d26605b3b7a0e2fd1106cd11f5d5c51605aeb79730b0f79f","observation_id":"451bbea3-df06-49ea-8403-ee1768859a38","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Vandewalle and Patrick Dewilde, On the Minimal Spectral Fac- torization of Nonsingular Positive Rational Matrices, IEEE Transactions on Information Theory, vol","venue":null,"work_id":null,"year":1975},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:597e05e62223bcc6483bf67d25470d031a37d95f122445120f7e0d0f28a4a052","observation_id":"483f10c4-472b-4bba-87e0-78b82924cd43","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Napp Avelli and H.L","venue":null,"work_id":null,"year":2008},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:209e336376893e8ec99f34666125da077346c5137260503c6190420f97486985","observation_id":"900d0bfe-d1dc-4c73-8b7b-92814cdb5e8b","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Pillai and J","venue":null,"work_id":null,"year":2002},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":36,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:2fbb0792aab8085a9c570fcf0545c1ace6c18036177c9ccc874acc37bb5f2462","observation_id":"9d329ece-cb8b-43bc-a9b1-deab93b820e0","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":1977},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":37,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:90722ce7e329588417826761ed60e1d1d82cd2ed5b8e70daa1c8a3712b745f29","observation_id":"a7b4b355-e1d6-4018-acc0-78011ae74220","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":null,"venue":null,"work_id":null,"year":1976},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":38,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:daea9f2ef57d045f800d61fdf745b1e42c37ad85ab2c73779583b856e3a3928d","observation_id":"44d6d2ab-2101-44a3-878f-135c90689f8b","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"Parillo, Rekha R","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:c5c48b702435edc7f355d25cbfc5ca6c0f204bb52fe34d5be30d84d3c2eeef5c","observation_id":"90840200-61fd-41c8-8ab4-3d79bbd3be5d","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-07-12T11:08:37.391550Z","title":"22, pp.27–44, 2011","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey","version":1},"reference_index":40,"source":"pdf_text","source_observed_at":"2026-07-12T11:08:37.391550Z"},"links":{"citing_paper":"/paper/2607.02557"},"observation_digest":"sha256:3681c16c9b32961f7a342d32cb0fd79a7570f361ba71766ee1ea34aca4db2f90","observation_id":"2bc616b6-7660-4d6f-bf47-0a63cc66daa6","resolution":{"observed_at":"2026-07-12T11:08:37.391550Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"paper":{"arxiv_id":"2607.02557","last_updated":"2026-06-27T21:21:41Z","latest_version":1,"primary_category":"eess.SP","snapshot_observed_at":"2026-07-12T11:08:35.491982Z","submitted_at":"2026-06-27T21:21:41Z","title":"Synthesis of passive multidimensional scattering matrices: a survey"},"reference_resolution":{"displayed":40,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":39,"verified_exact":1,"verified_fuzzy":0},"total_outbound_references":40},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"thesis":"As of 12 August 2026, this Paper Citation Record lists 40 of 40 outbound references and 0 inbound Pith citation observations for arXiv:2607.02557."}