{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:2JAG2FYRTC45X6H4B3QNQVADAO","short_pith_number":"pith:2JAG2FYR","schema_version":"1.0","canonical_sha256":"d2406d171198b9dbf8fc0ee0d85403038e2e233f8b76bc94f7feffafc9c9ad89","source":{"kind":"arxiv","id":"1202.2802","version":3},"attestation_state":"computed","paper":{"title":"On Near-cloak in Acoustic Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"math.AP","authors_text":"Hongyu Liu","submitted_at":"2012-02-13T17:42:44Z","abstract_excerpt":"Invisibility cloaking in acoustic scattering via the approach of transformation optics is considered. The near-cloaks of both passive medium and active/radiating object are investigated. From a practical viewpoint, we are especially interested in the cloaking of an arbitrary (but regular) content. It is shown that one cannot achieve the near-cloak unless some special mechanism is introduced into the construction. A general lossy layer is incorporated into the construction of our near-cloaking devices. We derive very accurate estimates of the scattering amplitude in terms of the regularization "},"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":"1202.2802","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-02-13T17:42:44Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"33e46b485f5dd8e3fe410b5ef9496844159eda3572396a601275c19d68509b89","abstract_canon_sha256":"3ae6722c6248719c3a284734149b83cccf191eefa47a99f2973f6606d7621a0f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:12.567354Z","signature_b64":"qvMyyKfVdViZbuTH2KqB61S1SYseT6+uhM/LpPH3WBQzMcCKgUonV6OZtM/TDEzkVHpJJvQLtIEku8CpcxJxDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2406d171198b9dbf8fc0ee0d85403038e2e233f8b76bc94f7feffafc9c9ad89","last_reissued_at":"2026-05-18T03:41:12.566678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:12.566678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On Near-cloak in Acoustic Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"math.AP","authors_text":"Hongyu Liu","submitted_at":"2012-02-13T17:42:44Z","abstract_excerpt":"Invisibility cloaking in acoustic scattering via the approach of transformation optics is considered. The near-cloaks of both passive medium and active/radiating object are investigated. From a practical viewpoint, we are especially interested in the cloaking of an arbitrary (but regular) content. It is shown that one cannot achieve the near-cloak unless some special mechanism is introduced into the construction. A general lossy layer is incorporated into the construction of our near-cloaking devices. We derive very accurate estimates of the scattering amplitude in terms of the regularization "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.2802","kind":"arxiv","version":3},"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":"1202.2802","created_at":"2026-05-18T03:41:12.566804+00:00"},{"alias_kind":"arxiv_version","alias_value":"1202.2802v3","created_at":"2026-05-18T03:41:12.566804+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.2802","created_at":"2026-05-18T03:41:12.566804+00:00"},{"alias_kind":"pith_short_12","alias_value":"2JAG2FYRTC45","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_16","alias_value":"2JAG2FYRTC45X6H4","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_8","alias_value":"2JAG2FYR","created_at":"2026-05-18T12:26:50.516681+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/2JAG2FYRTC45X6H4B3QNQVADAO","json":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO.json","graph_json":"https://pith.science/api/pith-number/2JAG2FYRTC45X6H4B3QNQVADAO/graph.json","events_json":"https://pith.science/api/pith-number/2JAG2FYRTC45X6H4B3QNQVADAO/events.json","paper":"https://pith.science/paper/2JAG2FYR"},"agent_actions":{"view_html":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO","download_json":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO.json","view_paper":"https://pith.science/paper/2JAG2FYR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1202.2802&json=true","fetch_graph":"https://pith.science/api/pith-number/2JAG2FYRTC45X6H4B3QNQVADAO/graph.json","fetch_events":"https://pith.science/api/pith-number/2JAG2FYRTC45X6H4B3QNQVADAO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO/action/storage_attestation","attest_author":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO/action/author_attestation","sign_citation":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO/action/citation_signature","submit_replication":"https://pith.science/pith/2JAG2FYRTC45X6H4B3QNQVADAO/action/replication_record"}},"created_at":"2026-05-18T03:41:12.566804+00:00","updated_at":"2026-05-18T03:41:12.566804+00:00"}