{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:VKP6ZVQU62IC6RCZKTJQYKMEHZ","short_pith_number":"pith:VKP6ZVQU","canonical_record":{"source":{"id":"0903.4204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2009-03-24T21:46:34Z","cross_cats_sorted":[],"title_canon_sha256":"c6383d3148ad04266bf7eaa6336f25cc2dafee056c2650603732d8f2f412ad05","abstract_canon_sha256":"1946a7c9bb87f046ea62aa2b2de15e12b145e12150a24486eb3cc6a35819f88e"},"schema_version":"1.0"},"canonical_sha256":"aa9fecd614f6902f445954d30c29843e4ccd31c76590eef80d75baf43f838dcf","source":{"kind":"arxiv","id":"0903.4204","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.4204","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"arxiv_version","alias_value":"0903.4204v1","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.4204","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"pith_short_12","alias_value":"VKP6ZVQU62IC","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VKP6ZVQU62IC6RCZ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VKP6ZVQU","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:VKP6ZVQU62IC6RCZKTJQYKMEHZ","target":"record","payload":{"canonical_record":{"source":{"id":"0903.4204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2009-03-24T21:46:34Z","cross_cats_sorted":[],"title_canon_sha256":"c6383d3148ad04266bf7eaa6336f25cc2dafee056c2650603732d8f2f412ad05","abstract_canon_sha256":"1946a7c9bb87f046ea62aa2b2de15e12b145e12150a24486eb3cc6a35819f88e"},"schema_version":"1.0"},"canonical_sha256":"aa9fecd614f6902f445954d30c29843e4ccd31c76590eef80d75baf43f838dcf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:26.129904Z","signature_b64":"uyZh89xyrPe0e+wXVOE0casibTQ6nBoWcuYTKl4PdytNUgIgxxMebY3OcGRdjTcx7Ox2EL2mYN//xrMKyHbtBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa9fecd614f6902f445954d30c29843e4ccd31c76590eef80d75baf43f838dcf","last_reissued_at":"2026-05-18T02:14:26.129288Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:26.129288Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.4204","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3riE5Md0meUJRn8rgi8A0Lg9h7SNCz6eMrco/KvsAOYL9pbb9Ja6B/PrQtshqDmSHyFLZp59JXKp/ZiM+gOqCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T05:42:34.126390Z"},"content_sha256":"7b8e456ffd1f48b8eb5e2e263f97467010ac6d20249442692cc4a3614a3916fc","schema_version":"1.0","event_id":"sha256:7b8e456ffd1f48b8eb5e2e263f97467010ac6d20249442692cc4a3614a3916fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:VKP6ZVQU62IC6RCZKTJQYKMEHZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Full-wave parallel dispersive finite-difference time-domain modeling of three-dimensional electromagnetic cloaking structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.comp-ph","authors_text":"Yang Hao, Yan Zhao","submitted_at":"2009-03-24T21:46:34Z","abstract_excerpt":"A parallel dispersive finite-difference time-domain (FDTD) method for the modeling of three-dimensional (3-D) electromagnetic cloaking structures is presented in this paper. The permittivity and permeability of the cloak are mapped to the Drude dispersion model and taken into account in FDTD simulations using an auxiliary differential equation (ADE) method. It is shown that the correction of numerical material parameters and the slow switching-on of source are necessary to ensure stable and convergent single-frequency simulations. Numerical results from wideband simulations demonstrate that wa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.4204","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8TErJnnpwMXoEW+uAzrru2qGjAb1OS8YnJdziDuFhsNfzzQLwZdq2wmra0RZyA1dqLPVsi5JmWqJ5rMAtxHCBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T05:42:34.126734Z"},"content_sha256":"1b3c62ff9c8c52e478166b5f1373607d87899f030c5600c589c36a25b62dec36","schema_version":"1.0","event_id":"sha256:1b3c62ff9c8c52e478166b5f1373607d87899f030c5600c589c36a25b62dec36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/bundle.json","state_url":"https://pith.science/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/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":"2026-06-25T05:42:34Z","links":{"resolver":"https://pith.science/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ","bundle":"https://pith.science/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/bundle.json","state":"https://pith.science/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VKP6ZVQU62IC6RCZKTJQYKMEHZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:VKP6ZVQU62IC6RCZKTJQYKMEHZ","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":"1946a7c9bb87f046ea62aa2b2de15e12b145e12150a24486eb3cc6a35819f88e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2009-03-24T21:46:34Z","title_canon_sha256":"c6383d3148ad04266bf7eaa6336f25cc2dafee056c2650603732d8f2f412ad05"},"schema_version":"1.0","source":{"id":"0903.4204","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.4204","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"arxiv_version","alias_value":"0903.4204v1","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.4204","created_at":"2026-05-18T02:14:26Z"},{"alias_kind":"pith_short_12","alias_value":"VKP6ZVQU62IC","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VKP6ZVQU62IC6RCZ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VKP6ZVQU","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:1b3c62ff9c8c52e478166b5f1373607d87899f030c5600c589c36a25b62dec36","target":"graph","created_at":"2026-05-18T02:14:26Z","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"},"paper":{"abstract_excerpt":"A parallel dispersive finite-difference time-domain (FDTD) method for the modeling of three-dimensional (3-D) electromagnetic cloaking structures is presented in this paper. The permittivity and permeability of the cloak are mapped to the Drude dispersion model and taken into account in FDTD simulations using an auxiliary differential equation (ADE) method. It is shown that the correction of numerical material parameters and the slow switching-on of source are necessary to ensure stable and convergent single-frequency simulations. Numerical results from wideband simulations demonstrate that wa","authors_text":"Yang Hao, Yan Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2009-03-24T21:46:34Z","title":"Full-wave parallel dispersive finite-difference time-domain modeling of three-dimensional electromagnetic cloaking structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.4204","kind":"arxiv","version":1},"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":"sha256:7b8e456ffd1f48b8eb5e2e263f97467010ac6d20249442692cc4a3614a3916fc","target":"record","created_at":"2026-05-18T02:14:26Z","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":"1946a7c9bb87f046ea62aa2b2de15e12b145e12150a24486eb3cc6a35819f88e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2009-03-24T21:46:34Z","title_canon_sha256":"c6383d3148ad04266bf7eaa6336f25cc2dafee056c2650603732d8f2f412ad05"},"schema_version":"1.0","source":{"id":"0903.4204","kind":"arxiv","version":1}},"canonical_sha256":"aa9fecd614f6902f445954d30c29843e4ccd31c76590eef80d75baf43f838dcf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa9fecd614f6902f445954d30c29843e4ccd31c76590eef80d75baf43f838dcf","first_computed_at":"2026-05-18T02:14:26.129288Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:26.129288Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uyZh89xyrPe0e+wXVOE0casibTQ6nBoWcuYTKl4PdytNUgIgxxMebY3OcGRdjTcx7Ox2EL2mYN//xrMKyHbtBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:26.129904Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.4204","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b8e456ffd1f48b8eb5e2e263f97467010ac6d20249442692cc4a3614a3916fc","sha256:1b3c62ff9c8c52e478166b5f1373607d87899f030c5600c589c36a25b62dec36"],"state_sha256":"0a30baa72957f825e9e7036702995ad49b86318d27644bbb243937d7c069c58e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gG+V9S3RoDveVRwuXyeudTCePQ8K7k0b6Oab0cgpnDKb65WiEMAF0evnZmIXDWAH60S2sRU+neGE4kiJDaH0Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T05:42:34.128740Z","bundle_sha256":"b07e121672cb0b9da54d4d1c0c5e931be3d3382baca4d38b13fb52f3abbbcbe7"}}