{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:UDLK7TELRFZ74ZUXBUOCYQIIYO","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":"8d8255ccb42f1d97d5598feb244afb3ecb5e3e209dafaa63fb0d48883b527e5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-22T13:19:27Z","title_canon_sha256":"fda56539099d62c3f17b42b0c0279b084eb96dbab9574910b2902cab361182ae"},"schema_version":"1.0","source":{"id":"1608.06159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.06159","created_at":"2026-05-18T01:08:22Z"},{"alias_kind":"arxiv_version","alias_value":"1608.06159v1","created_at":"2026-05-18T01:08:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06159","created_at":"2026-05-18T01:08:22Z"},{"alias_kind":"pith_short_12","alias_value":"UDLK7TELRFZ7","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UDLK7TELRFZ74ZUX","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UDLK7TEL","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:6bf78b3302ca28a557c0deb0caee2446c1ac638bff91851b105ffd3f06aa2f48","target":"graph","created_at":"2026-05-18T01:08:22Z","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 propose an extended full-waveform inversion formulation that includes general convex constraints on the model. Though the full problem is highly nonconvex, the overarching optimization scheme arrives at geologically plausible results by solving a sequence of relaxed and warm-started constrained convex subproblems. The combination of box, total-variation, and successively relaxed asymmetric total-variation constraints allows us to steer free from parasitic local minima while keeping the estimated physical parameters laterally continuous and in a physically realistic range. For accurate start","authors_text":"Aleksandr Y. Aravkin, Ernie Esser, Felix J. Herrmann, Lluis Guasch, Tristan van Leeuwen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-22T13:19:27Z","title":"Total-variation regularization strategies in full-waveform inversion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06159","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:b217adbf405a884c99d0c4aa68961d3844b3f06d3e0901d2ff2ffb2b242991e5","target":"record","created_at":"2026-05-18T01:08:22Z","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":"8d8255ccb42f1d97d5598feb244afb3ecb5e3e209dafaa63fb0d48883b527e5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-22T13:19:27Z","title_canon_sha256":"fda56539099d62c3f17b42b0c0279b084eb96dbab9574910b2902cab361182ae"},"schema_version":"1.0","source":{"id":"1608.06159","kind":"arxiv","version":1}},"canonical_sha256":"a0d6afcc8b8973fe66970d1c2c4108c3a31bd5c827e90c2a4f8161c379f3bd09","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0d6afcc8b8973fe66970d1c2c4108c3a31bd5c827e90c2a4f8161c379f3bd09","first_computed_at":"2026-05-18T01:08:22.103509Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:22.103509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MhXaDBpU0t1htAnZUqwgm722eNkkpSpsvFVnFHKB0uu4Dg7TOIP+cTK9owyL+c9oSSZdjdXX1WMq9+Fc/Tk3BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:22.104096Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.06159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b217adbf405a884c99d0c4aa68961d3844b3f06d3e0901d2ff2ffb2b242991e5","sha256:6bf78b3302ca28a557c0deb0caee2446c1ac638bff91851b105ffd3f06aa2f48"],"state_sha256":"d05859b49589386dffccb7cf388c497829cd305aef2937cef0a4fbef465a0c9f"}