{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:AI5REJPOUDUTB6XDPPKCUP2U3A","short_pith_number":"pith:AI5REJPO","schema_version":"1.0","canonical_sha256":"023b1225eea0e930fae37bd42a3f54d8380a4698ba46514f4b97cc65e727d8eb","source":{"kind":"arxiv","id":"0907.0263","version":1},"attestation_state":"computed","paper":{"title":"Broadband Exterior Cloaking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.MP"],"primary_cat":"math-ph","authors_text":"Daniel Onofrei, Fernando Guevara Vasquez, Graeme W. Milton","submitted_at":"2009-07-01T23:38:58Z","abstract_excerpt":"It is shown how a recently proposed method of cloaking is effective over a broad range of frequencies. The method is based on three or more active devices. The devices, while not radiating significantly, create a ``quiet zone'' between the devices where the wave amplitude is small. Objects placed within this region are virtually invisible. The cloaking is demonstrated by simulations with a broadband incident pulse."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0907.0263","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2009-07-01T23:38:58Z","cross_cats_sorted":["math.MP"],"title_canon_sha256":"e45eba218e9f9e8804de7559d5bba8650211486707474d01071c5240677a110e","abstract_canon_sha256":"cce1d15e62f982663335b234f8bc2747bc71443d7d235eb38da2b74b9cc2926d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:51.052119Z","signature_b64":"Nq0k3P9wm6Dw+qXv8zgdHsnggC8egrM9PVawvDzI4TfF7GYYngUDKionj3G8/W8Qkw4xGBqb8DPW9RV2+2iuBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"023b1225eea0e930fae37bd42a3f54d8380a4698ba46514f4b97cc65e727d8eb","last_reissued_at":"2026-05-18T01:59:51.051569Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:51.051569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Broadband Exterior Cloaking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.MP"],"primary_cat":"math-ph","authors_text":"Daniel Onofrei, Fernando Guevara Vasquez, Graeme W. Milton","submitted_at":"2009-07-01T23:38:58Z","abstract_excerpt":"It is shown how a recently proposed method of cloaking is effective over a broad range of frequencies. The method is based on three or more active devices. The devices, while not radiating significantly, create a ``quiet zone'' between the devices where the wave amplitude is small. Objects placed within this region are virtually invisible. The cloaking is demonstrated by simulations with a broadband incident pulse."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.0263","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0907.0263","created_at":"2026-05-18T01:59:51.051646+00:00"},{"alias_kind":"arxiv_version","alias_value":"0907.0263v1","created_at":"2026-05-18T01:59:51.051646+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.0263","created_at":"2026-05-18T01:59:51.051646+00:00"},{"alias_kind":"pith_short_12","alias_value":"AI5REJPOUDUT","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"AI5REJPOUDUTB6XD","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"AI5REJPO","created_at":"2026-05-18T12:25:58.837520+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A","json":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A.json","graph_json":"https://pith.science/api/pith-number/AI5REJPOUDUTB6XDPPKCUP2U3A/graph.json","events_json":"https://pith.science/api/pith-number/AI5REJPOUDUTB6XDPPKCUP2U3A/events.json","paper":"https://pith.science/paper/AI5REJPO"},"agent_actions":{"view_html":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A","download_json":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A.json","view_paper":"https://pith.science/paper/AI5REJPO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0907.0263&json=true","fetch_graph":"https://pith.science/api/pith-number/AI5REJPOUDUTB6XDPPKCUP2U3A/graph.json","fetch_events":"https://pith.science/api/pith-number/AI5REJPOUDUTB6XDPPKCUP2U3A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A/action/storage_attestation","attest_author":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A/action/author_attestation","sign_citation":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A/action/citation_signature","submit_replication":"https://pith.science/pith/AI5REJPOUDUTB6XDPPKCUP2U3A/action/replication_record"}},"created_at":"2026-05-18T01:59:51.051646+00:00","updated_at":"2026-05-18T01:59:51.051646+00:00"}