{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:5M2KY6UBYVESV7PWYVKCOYPVFV","short_pith_number":"pith:5M2KY6UB","canonical_record":{"source":{"id":"2306.09480","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2023-06-15T20:21:54Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"916e79423af1902dfe98c66f87ade45630a42a80388ccde6bbbe0b3c6ab4ba6c","abstract_canon_sha256":"f3c2ccbc11305b6d292a91b594dc3578cf155b716737c75f69ed8e9020864982"},"schema_version":"1.0"},"canonical_sha256":"eb34ac7a81c5492afdf6c5542761f52d7415f1e4bc92e96eadcf374e513c76fe","source":{"kind":"arxiv","id":"2306.09480","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.09480","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"arxiv_version","alias_value":"2306.09480v2","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.09480","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_12","alias_value":"5M2KY6UBYVES","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_16","alias_value":"5M2KY6UBYVESV7PW","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_8","alias_value":"5M2KY6UB","created_at":"2026-07-05T06:51:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:5M2KY6UBYVESV7PWYVKCOYPVFV","target":"record","payload":{"canonical_record":{"source":{"id":"2306.09480","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2023-06-15T20:21:54Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"916e79423af1902dfe98c66f87ade45630a42a80388ccde6bbbe0b3c6ab4ba6c","abstract_canon_sha256":"f3c2ccbc11305b6d292a91b594dc3578cf155b716737c75f69ed8e9020864982"},"schema_version":"1.0"},"canonical_sha256":"eb34ac7a81c5492afdf6c5542761f52d7415f1e4bc92e96eadcf374e513c76fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:51:26.659342Z","signature_b64":"XKYg5TUWFjb5Qa1fjnTfvRy+EIuMiR/nrir+ooNWgigMCHxJvwN6sHBWswquWvj8dWiJR12cu/Ag94QascCODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb34ac7a81c5492afdf6c5542761f52d7415f1e4bc92e96eadcf374e513c76fe","last_reissued_at":"2026-07-05T06:51:26.658821Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:51:26.658821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.09480","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:51:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yw/mgpAvLVzZ4Ms7Z0YH/SKp3IGgT+GOCDVS6qZOLccNsWwUkkrmpQkEkoW680QfQGk4EgFHTfeRxksC3PX4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:59:05.457486Z"},"content_sha256":"c101ab3691aa4d21aac1b8a4811ca64ef79ea84ee5ebfb3582ea761c0cfdca71","schema_version":"1.0","event_id":"sha256:c101ab3691aa4d21aac1b8a4811ca64ef79ea84ee5ebfb3582ea761c0cfdca71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:5M2KY6UBYVESV7PWYVKCOYPVFV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimization of RIS-Aided MIMO -- A Mutually Coupled Loaded Wire Dipole Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"H. El Hassani, M. Di Renzo, N. S. Perovi\\'c, P. Mursia, S. Jeong, V. Sciancalepore, X. Costa-P\\'erez, X. Qian","submitted_at":"2023-06-15T20:21:54Z","abstract_excerpt":"We consider a reconfigurable intelligent surface (RIS) assisted multiple-input multiple-output (MIMO) system in the presence of scattering objects. The MIMO transmitter and receiver, the RIS, and the scattering objects are modeled as mutually coupled thin wires connected to load impedances. We introduce a novel numerical algorithm for optimizing the tunable loads connected to the RIS, which does not utilize the Neumann series approximation. The algorithm is provably convergent, has polynomial complexity with the number of RIS elements, and outperforms the most relevant benchmark algorithms whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.09480","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2306.09480/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:51:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r34cKL+NxeGjWn+Y6KH1YkYdquvgRPR0BcmmCwiOWGl5X+OdlmbmeSQKFOR3mZXeDF5FdMQvvX0iUGEXEJWhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:59:05.458139Z"},"content_sha256":"15e26655d8d4cf3a9806131bb75709204084a67213ad250828e1f4273ba77be0","schema_version":"1.0","event_id":"sha256:15e26655d8d4cf3a9806131bb75709204084a67213ad250828e1f4273ba77be0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/bundle.json","state_url":"https://pith.science/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T05:59:05Z","links":{"resolver":"https://pith.science/pith/5M2KY6UBYVESV7PWYVKCOYPVFV","bundle":"https://pith.science/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/bundle.json","state":"https://pith.science/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5M2KY6UBYVESV7PWYVKCOYPVFV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:5M2KY6UBYVESV7PWYVKCOYPVFV","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f3c2ccbc11305b6d292a91b594dc3578cf155b716737c75f69ed8e9020864982","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2023-06-15T20:21:54Z","title_canon_sha256":"916e79423af1902dfe98c66f87ade45630a42a80388ccde6bbbe0b3c6ab4ba6c"},"schema_version":"1.0","source":{"id":"2306.09480","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.09480","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"arxiv_version","alias_value":"2306.09480v2","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.09480","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_12","alias_value":"5M2KY6UBYVES","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_16","alias_value":"5M2KY6UBYVESV7PW","created_at":"2026-07-05T06:51:26Z"},{"alias_kind":"pith_short_8","alias_value":"5M2KY6UB","created_at":"2026-07-05T06:51:26Z"}],"graph_snapshots":[{"event_id":"sha256:15e26655d8d4cf3a9806131bb75709204084a67213ad250828e1f4273ba77be0","target":"graph","created_at":"2026-07-05T06:51:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2306.09480/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider a reconfigurable intelligent surface (RIS) assisted multiple-input multiple-output (MIMO) system in the presence of scattering objects. The MIMO transmitter and receiver, the RIS, and the scattering objects are modeled as mutually coupled thin wires connected to load impedances. We introduce a novel numerical algorithm for optimizing the tunable loads connected to the RIS, which does not utilize the Neumann series approximation. The algorithm is provably convergent, has polynomial complexity with the number of RIS elements, and outperforms the most relevant benchmark algorithms whi","authors_text":"H. El Hassani, M. Di Renzo, N. S. Perovi\\'c, P. Mursia, S. Jeong, V. Sciancalepore, X. Costa-P\\'erez, X. Qian","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2023-06-15T20:21:54Z","title":"Optimization of RIS-Aided MIMO -- A Mutually Coupled Loaded Wire Dipole Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.09480","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:c101ab3691aa4d21aac1b8a4811ca64ef79ea84ee5ebfb3582ea761c0cfdca71","target":"record","created_at":"2026-07-05T06:51:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"f3c2ccbc11305b6d292a91b594dc3578cf155b716737c75f69ed8e9020864982","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2023-06-15T20:21:54Z","title_canon_sha256":"916e79423af1902dfe98c66f87ade45630a42a80388ccde6bbbe0b3c6ab4ba6c"},"schema_version":"1.0","source":{"id":"2306.09480","kind":"arxiv","version":2}},"canonical_sha256":"eb34ac7a81c5492afdf6c5542761f52d7415f1e4bc92e96eadcf374e513c76fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb34ac7a81c5492afdf6c5542761f52d7415f1e4bc92e96eadcf374e513c76fe","first_computed_at":"2026-07-05T06:51:26.658821Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:51:26.658821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XKYg5TUWFjb5Qa1fjnTfvRy+EIuMiR/nrir+ooNWgigMCHxJvwN6sHBWswquWvj8dWiJR12cu/Ag94QascCODQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:51:26.659342Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.09480","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c101ab3691aa4d21aac1b8a4811ca64ef79ea84ee5ebfb3582ea761c0cfdca71","sha256:15e26655d8d4cf3a9806131bb75709204084a67213ad250828e1f4273ba77be0"],"state_sha256":"20aec1843d1e488ac05816930e28c59785d1ef4921b6508c0ace0fa36b60883b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AKn9WGNmNc6bLWlEoegddPaXplCNsjDMms+wFGUtexHRVnvnz6n4dBPurCiSdxctpoM4xUtE5fBRIop7eN/nBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T05:59:05.461232Z","bundle_sha256":"fd2ba8f7adfea18dca0b8e28eed30617d93c222462ddfd640f544f13c6cda7ff"}}