{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HTIYFN4NBOKDLN7BA65F6S73BT","short_pith_number":"pith:HTIYFN4N","canonical_record":{"source":{"id":"1608.05519","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2016-08-19T07:43:27Z","cross_cats_sorted":[],"title_canon_sha256":"fc51409d232e85cda6625aa8c25194bcbb73655cbfd7361e0a60e31c2ace41f3","abstract_canon_sha256":"bd815f66adbe876e66b45604c2b703e7a01d3fe295f5296280206f9ca6432361"},"schema_version":"1.0"},"canonical_sha256":"3cd182b78d0b9435b7e107ba5f4bfb0ce2bc486febad4510e9159e6ac40326a4","source":{"kind":"arxiv","id":"1608.05519","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05519","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05519v1","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05519","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"HTIYFN4NBOKD","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HTIYFN4NBOKDLN7B","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HTIYFN4N","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HTIYFN4NBOKDLN7BA65F6S73BT","target":"record","payload":{"canonical_record":{"source":{"id":"1608.05519","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2016-08-19T07:43:27Z","cross_cats_sorted":[],"title_canon_sha256":"fc51409d232e85cda6625aa8c25194bcbb73655cbfd7361e0a60e31c2ace41f3","abstract_canon_sha256":"bd815f66adbe876e66b45604c2b703e7a01d3fe295f5296280206f9ca6432361"},"schema_version":"1.0"},"canonical_sha256":"3cd182b78d0b9435b7e107ba5f4bfb0ce2bc486febad4510e9159e6ac40326a4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:28.280873Z","signature_b64":"Yhe9k7V175xIp+K7JK5grkA/3VB+9+v0I138/3LKwXJU0uSkno9w3GkAmQiUcOvHVxCXBj2IqrgvkWuYk+p7CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3cd182b78d0b9435b7e107ba5f4bfb0ce2bc486febad4510e9159e6ac40326a4","last_reissued_at":"2026-05-18T01:08:28.280414Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:28.280414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.05519","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":"2026-05-18T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YnxuwD0bBtKdR0GtOKeBYLHpU/v4mU7BZUmlwh3/KVhXb66XpbexdGWRXLcJWQOb8FaFx/n+DZfstK158zgdAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T15:12:22.695399Z"},"content_sha256":"a87fdeaf201f7cba0c0480f777cedba01aa2c1d5005b69adedbdc0d8b6566605","schema_version":"1.0","event_id":"sha256:a87fdeaf201f7cba0c0480f777cedba01aa2c1d5005b69adedbdc0d8b6566605"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HTIYFN4NBOKDLN7BA65F6S73BT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromagnetic Boundaries with PEC/PMC Equivalence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.class-ph","authors_text":"Ari Sihvola, Ismo V. Lindell","submitted_at":"2016-08-19T07:43:27Z","abstract_excerpt":"The most general electromagnetic boundary, defined by linear and local boundary conditions, is defined in terms of conditions which can be called generalized impedance boundary conditions. Requiring that the boundary be equivalent to PEC and PMC boundaries for its two eigen-plane waves, which property is known to exist for many of its special cases, it is shown that the recently introduced Generalized Soft-and-Hard/DB (GSHDB) boundary is the most general boundary satisfying this property."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05519","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":"2026-05-18T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tTdXE1kvTIEQ3jOMV+r4qoqj44UFnV6f1kgYORGqJI7MyEGWaVVFi6tcSfw+tRHjeTwffcRvAZublan4flI2CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T15:12:22.695758Z"},"content_sha256":"0187b4e154e7d24c3df9ca02cb7e43a623678e3894565b8fe90c711f608cb8b1","schema_version":"1.0","event_id":"sha256:0187b4e154e7d24c3df9ca02cb7e43a623678e3894565b8fe90c711f608cb8b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HTIYFN4NBOKDLN7BA65F6S73BT/bundle.json","state_url":"https://pith.science/pith/HTIYFN4NBOKDLN7BA65F6S73BT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HTIYFN4NBOKDLN7BA65F6S73BT/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":"2026-06-24T15:12:22Z","links":{"resolver":"https://pith.science/pith/HTIYFN4NBOKDLN7BA65F6S73BT","bundle":"https://pith.science/pith/HTIYFN4NBOKDLN7BA65F6S73BT/bundle.json","state":"https://pith.science/pith/HTIYFN4NBOKDLN7BA65F6S73BT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HTIYFN4NBOKDLN7BA65F6S73BT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HTIYFN4NBOKDLN7BA65F6S73BT","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":"bd815f66adbe876e66b45604c2b703e7a01d3fe295f5296280206f9ca6432361","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2016-08-19T07:43:27Z","title_canon_sha256":"fc51409d232e85cda6625aa8c25194bcbb73655cbfd7361e0a60e31c2ace41f3"},"schema_version":"1.0","source":{"id":"1608.05519","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05519","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05519v1","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05519","created_at":"2026-05-18T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"HTIYFN4NBOKD","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HTIYFN4NBOKDLN7B","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HTIYFN4N","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:0187b4e154e7d24c3df9ca02cb7e43a623678e3894565b8fe90c711f608cb8b1","target":"graph","created_at":"2026-05-18T01:08:28Z","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":"The most general electromagnetic boundary, defined by linear and local boundary conditions, is defined in terms of conditions which can be called generalized impedance boundary conditions. Requiring that the boundary be equivalent to PEC and PMC boundaries for its two eigen-plane waves, which property is known to exist for many of its special cases, it is shown that the recently introduced Generalized Soft-and-Hard/DB (GSHDB) boundary is the most general boundary satisfying this property.","authors_text":"Ari Sihvola, Ismo V. Lindell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2016-08-19T07:43:27Z","title":"Electromagnetic Boundaries with PEC/PMC Equivalence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05519","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:a87fdeaf201f7cba0c0480f777cedba01aa2c1d5005b69adedbdc0d8b6566605","target":"record","created_at":"2026-05-18T01:08:28Z","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":"bd815f66adbe876e66b45604c2b703e7a01d3fe295f5296280206f9ca6432361","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2016-08-19T07:43:27Z","title_canon_sha256":"fc51409d232e85cda6625aa8c25194bcbb73655cbfd7361e0a60e31c2ace41f3"},"schema_version":"1.0","source":{"id":"1608.05519","kind":"arxiv","version":1}},"canonical_sha256":"3cd182b78d0b9435b7e107ba5f4bfb0ce2bc486febad4510e9159e6ac40326a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3cd182b78d0b9435b7e107ba5f4bfb0ce2bc486febad4510e9159e6ac40326a4","first_computed_at":"2026-05-18T01:08:28.280414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:28.280414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yhe9k7V175xIp+K7JK5grkA/3VB+9+v0I138/3LKwXJU0uSkno9w3GkAmQiUcOvHVxCXBj2IqrgvkWuYk+p7CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:28.280873Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.05519","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a87fdeaf201f7cba0c0480f777cedba01aa2c1d5005b69adedbdc0d8b6566605","sha256:0187b4e154e7d24c3df9ca02cb7e43a623678e3894565b8fe90c711f608cb8b1"],"state_sha256":"6c08c4850846e3faba9c7d21bd8ffb1d64cd9790bbeb7220a877f48e262b3721"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M4BUrSc6o/GV8chMY7Lj3MrCRORxaHmqFRXIgix8O+XpvjF18iK7Sm96sJkEhOe8GEyULBwKTFJX+kl0mp5GBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T15:12:22.697646Z","bundle_sha256":"de209b1e1a8e6696e83eb1dbde26095518a10839a503366a99368c53c2ac66f5"}}