{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:OEOGP7ASMJU3PZR4G7QXTBQJS6","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":"34853d564c9332e6b1f3951180a09e0b6e33990658a05b9688855e59dc778d95","cross_cats_sorted":["math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2009-02-26T07:15:45Z","title_canon_sha256":"3f511d6aadb82158a07e337f4ba459e5ab38deaf56c806b06a5d4f374e5702d4"},"schema_version":"1.0","source":{"id":"0902.4497","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.4497","created_at":"2026-05-18T01:36:39Z"},{"alias_kind":"arxiv_version","alias_value":"0902.4497v5","created_at":"2026-05-18T01:36:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.4497","created_at":"2026-05-18T01:36:39Z"},{"alias_kind":"pith_short_12","alias_value":"OEOGP7ASMJU3","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"OEOGP7ASMJU3PZR4","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"OEOGP7AS","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:3b142dfb84ca932edef916f19b72fc3ced8540cdb3be55664205560ff2f40e61","target":"graph","created_at":"2026-05-18T01:36:39Z","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":"We consider wave equations in domains with time-dependent boundaries (moving obstacles) contained in a fixed cylinder for all time. We give sufficient conditions for the determination of the moving boundary from the Cauchy data on part of the boundary of the cylinder. We also study the related problem of accessibility of the moving boundary by time-like curves from the boundary of the cylinder.","authors_text":"Gregory Eskin, James Ralston","cross_cats":["math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2009-02-26T07:15:45Z","title":"On the determination of Moving Boundaries for Hyperbolic Equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.4497","kind":"arxiv","version":5},"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":"sha256:105bf48adb113b80838c817f0a3bce82a992d4c9daeca6f5bc84a69e134da6cb","target":"record","created_at":"2026-05-18T01:36:39Z","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":"34853d564c9332e6b1f3951180a09e0b6e33990658a05b9688855e59dc778d95","cross_cats_sorted":["math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2009-02-26T07:15:45Z","title_canon_sha256":"3f511d6aadb82158a07e337f4ba459e5ab38deaf56c806b06a5d4f374e5702d4"},"schema_version":"1.0","source":{"id":"0902.4497","kind":"arxiv","version":5}},"canonical_sha256":"711c67fc126269b7e63c37e179860997a5be4b2e9ab6a4a57190d0acdb272dcf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"711c67fc126269b7e63c37e179860997a5be4b2e9ab6a4a57190d0acdb272dcf","first_computed_at":"2026-05-18T01:36:39.313235Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:39.313235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Bsu9Q+y9XS8dtPUGcUvfO5W89zKRVfnDbZNJKncOGULYyCdIMYp5dkSf2kuTF0bZYCoFWJTowVW0ImXvOxpXBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:39.313700Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.4497","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:105bf48adb113b80838c817f0a3bce82a992d4c9daeca6f5bc84a69e134da6cb","sha256:3b142dfb84ca932edef916f19b72fc3ced8540cdb3be55664205560ff2f40e61"],"state_sha256":"8c3cbf89d78771cca5b7183f4b75d7536076dcd2a40d34e006c44c316bfe89c3"}