{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:UEQVBQIQYGCZHHQG5ANJTBLIRE","short_pith_number":"pith:UEQVBQIQ","canonical_record":{"source":{"id":"physics/0511249","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.optics","submitted_at":"2005-11-30T11:16:51Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"40ab97cd6323907069088ed84a171f7119181c501db7fecdf9dd8099850749e3","abstract_canon_sha256":"5a5b1c0b8a6f75ac8c81e4e0c889081fd59ba7adfde0667c386524201c6db163"},"schema_version":"1.0"},"canonical_sha256":"a12150c110c185939e06e81a9985688931736613bcf5204ec1f79ccd9aba4dbe","source":{"kind":"arxiv","id":"physics/0511249","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0511249","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0511249v2","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0511249","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"pith_short_12","alias_value":"UEQVBQIQYGCZ","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"UEQVBQIQYGCZHHQG","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"UEQVBQIQ","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:UEQVBQIQYGCZHHQG5ANJTBLIRE","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0511249","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.optics","submitted_at":"2005-11-30T11:16:51Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"40ab97cd6323907069088ed84a171f7119181c501db7fecdf9dd8099850749e3","abstract_canon_sha256":"5a5b1c0b8a6f75ac8c81e4e0c889081fd59ba7adfde0667c386524201c6db163"},"schema_version":"1.0"},"canonical_sha256":"a12150c110c185939e06e81a9985688931736613bcf5204ec1f79ccd9aba4dbe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:07.383017Z","signature_b64":"8JCNYL9exiMCtD+MDgAxTfsxn20d5Hnfq+ka9u0osLK8ztjQqJwl+eRNbBJ+YwUIxqvqLQQ77dv0N+sb9qztAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a12150c110c185939e06e81a9985688931736613bcf5204ec1f79ccd9aba4dbe","last_reissued_at":"2026-05-18T01:38:07.382498Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:07.382498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0511249","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":"2026-05-18T01:38:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KKnDAzq/AbIOrFAGuk8HGLAWvSp3GDoNvz8g+mZyNUAWwBbrVz1+A5z8zxH721J4S9p0pWrQDuiQqZz9NLMKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:42:20.364602Z"},"content_sha256":"77315cccc323d7368d29c47a6fc9b35c96139eb593173ef10e827dfdcbea8588","schema_version":"1.0","event_id":"sha256:77315cccc323d7368d29c47a6fc9b35c96139eb593173ef10e827dfdcbea8588"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:UEQVBQIQYGCZHHQG5ANJTBLIRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Positive-, negative-, and orthogonal-phase-velocity propagation of electromagnetic plane waves in a simply moving medium","license":"","headline":"","cross_cats":["physics.space-ph"],"primary_cat":"physics.optics","authors_text":"Akhlesh Lakhtakia (Pennsylvania State University), Sandi Setiawan (University of Edinburgh), Tom G. Mackay (University of Edinburgh)","submitted_at":"2005-11-30T11:16:51Z","abstract_excerpt":"Planewave propagation in a simply moving, dielectric-magnetic medium that is isotropic in the co-moving reference frame, is classified into three different categories: positive-, negative-, and orthogonal-phase-velocity (PPV, NPV, and OPV). Calculations from the perspective of an observer located in a non-co-moving reference frame show that, whether the nature of planewave propagation is PPV or NPV (or OPV in the case of nondissipative mediums) depends strongly upon the magnitude and direction of that observer's velocity relative to the medium. PPV propagation is characterized by a positive re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0511249","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":""},"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":"2026-05-18T01:38:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1b1DDqrdbiYDxQUZTTr6XRrX9mpMvpEEq4pgsBV0wNh1mpzR6szP/Yv2l0lsPKYDlKGMZTXaifWuHQ6EPX9wCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:42:20.365285Z"},"content_sha256":"1042c6236c66507abeb50d5c119b8ef8257efc2ad4fcaf5b6b498d1d3fa17366","schema_version":"1.0","event_id":"sha256:1042c6236c66507abeb50d5c119b8ef8257efc2ad4fcaf5b6b498d1d3fa17366"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/bundle.json","state_url":"https://pith.science/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/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":"2026-06-07T16:42:20Z","links":{"resolver":"https://pith.science/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE","bundle":"https://pith.science/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/bundle.json","state":"https://pith.science/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UEQVBQIQYGCZHHQG5ANJTBLIRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:UEQVBQIQYGCZHHQG5ANJTBLIRE","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":"5a5b1c0b8a6f75ac8c81e4e0c889081fd59ba7adfde0667c386524201c6db163","cross_cats_sorted":["physics.space-ph"],"license":"","primary_cat":"physics.optics","submitted_at":"2005-11-30T11:16:51Z","title_canon_sha256":"40ab97cd6323907069088ed84a171f7119181c501db7fecdf9dd8099850749e3"},"schema_version":"1.0","source":{"id":"physics/0511249","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0511249","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0511249v2","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0511249","created_at":"2026-05-18T01:38:07Z"},{"alias_kind":"pith_short_12","alias_value":"UEQVBQIQYGCZ","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"UEQVBQIQYGCZHHQG","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"UEQVBQIQ","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:1042c6236c66507abeb50d5c119b8ef8257efc2ad4fcaf5b6b498d1d3fa17366","target":"graph","created_at":"2026-05-18T01:38:07Z","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":"Planewave propagation in a simply moving, dielectric-magnetic medium that is isotropic in the co-moving reference frame, is classified into three different categories: positive-, negative-, and orthogonal-phase-velocity (PPV, NPV, and OPV). Calculations from the perspective of an observer located in a non-co-moving reference frame show that, whether the nature of planewave propagation is PPV or NPV (or OPV in the case of nondissipative mediums) depends strongly upon the magnitude and direction of that observer's velocity relative to the medium. PPV propagation is characterized by a positive re","authors_text":"Akhlesh Lakhtakia (Pennsylvania State University), Sandi Setiawan (University of Edinburgh), Tom G. Mackay (University of Edinburgh)","cross_cats":["physics.space-ph"],"headline":"","license":"","primary_cat":"physics.optics","submitted_at":"2005-11-30T11:16:51Z","title":"Positive-, negative-, and orthogonal-phase-velocity propagation of electromagnetic plane waves in a simply moving medium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0511249","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":"sha256:77315cccc323d7368d29c47a6fc9b35c96139eb593173ef10e827dfdcbea8588","target":"record","created_at":"2026-05-18T01:38:07Z","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":"5a5b1c0b8a6f75ac8c81e4e0c889081fd59ba7adfde0667c386524201c6db163","cross_cats_sorted":["physics.space-ph"],"license":"","primary_cat":"physics.optics","submitted_at":"2005-11-30T11:16:51Z","title_canon_sha256":"40ab97cd6323907069088ed84a171f7119181c501db7fecdf9dd8099850749e3"},"schema_version":"1.0","source":{"id":"physics/0511249","kind":"arxiv","version":2}},"canonical_sha256":"a12150c110c185939e06e81a9985688931736613bcf5204ec1f79ccd9aba4dbe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a12150c110c185939e06e81a9985688931736613bcf5204ec1f79ccd9aba4dbe","first_computed_at":"2026-05-18T01:38:07.382498Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:07.382498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8JCNYL9exiMCtD+MDgAxTfsxn20d5Hnfq+ka9u0osLK8ztjQqJwl+eRNbBJ+YwUIxqvqLQQ77dv0N+sb9qztAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:07.383017Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0511249","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77315cccc323d7368d29c47a6fc9b35c96139eb593173ef10e827dfdcbea8588","sha256:1042c6236c66507abeb50d5c119b8ef8257efc2ad4fcaf5b6b498d1d3fa17366"],"state_sha256":"eb3c681355086174c18ecb3c7aa91f644eca3a02030cb90b35916903c9d3e249"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RPFtWiYKOe2QJbRZ5Q/ocV43PqDUaBGOhBU5FkwHvKlnb1s8BVP6ndy8+S/e1+e4woN04Cbu9LfEx3xIfSl4DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T16:42:20.369138Z","bundle_sha256":"07e82bdb34b00e1ed848d6c3be5d2d14bb984330b2ccb10cfc11be24a75c41f7"}}