{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SIGPEKRQDELW3EYDVFBFJAK2SN","short_pith_number":"pith:SIGPEKRQ","canonical_record":{"source":{"id":"1805.07618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-19T15:54:51Z","cross_cats_sorted":[],"title_canon_sha256":"bc47657c485ada79a1c5609af47d2f13bc248451bba70834f7753600c2093bda","abstract_canon_sha256":"b49ae6dbca2dfa3fcb640abc215d14cc844c791df315c6c69230ff9d0f012e62"},"schema_version":"1.0"},"canonical_sha256":"920cf22a3019176d9303a94254815a93605d1c4e4a00271adc6ab91ff343ac87","source":{"kind":"arxiv","id":"1805.07618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07618","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07618v1","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07618","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"pith_short_12","alias_value":"SIGPEKRQDELW","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SIGPEKRQDELW3EYD","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SIGPEKRQ","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SIGPEKRQDELW3EYDVFBFJAK2SN","target":"record","payload":{"canonical_record":{"source":{"id":"1805.07618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-19T15:54:51Z","cross_cats_sorted":[],"title_canon_sha256":"bc47657c485ada79a1c5609af47d2f13bc248451bba70834f7753600c2093bda","abstract_canon_sha256":"b49ae6dbca2dfa3fcb640abc215d14cc844c791df315c6c69230ff9d0f012e62"},"schema_version":"1.0"},"canonical_sha256":"920cf22a3019176d9303a94254815a93605d1c4e4a00271adc6ab91ff343ac87","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:33.028385Z","signature_b64":"8IZJKNOjIMzRdMzCqqix4t2EYubcm9RbrCL8yzWJ1c9i+7e9MyFo0WQJpdmlQ9xsie87COzlbEWl83oc4O77Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"920cf22a3019176d9303a94254815a93605d1c4e4a00271adc6ab91ff343ac87","last_reissued_at":"2026-05-18T00:15:33.027850Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:33.027850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.07618","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":"2026-05-18T00:15:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8R/a+tdlCI9520Tw974/hJsU6ea1G9Cf9Ed6/KN6Ww2TBCdMtsN74kHcEwIlh6lKJkxP/nZIwLCTxYRETB/aBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:51:10.645068Z"},"content_sha256":"cb60b574b31b9eafb103d337429bb5924c2d29918759e37a4a11137878cb6459","schema_version":"1.0","event_id":"sha256:cb60b574b31b9eafb103d337429bb5924c2d29918759e37a4a11137878cb6459"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SIGPEKRQDELW3EYDVFBFJAK2SN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Convexification method for a coefficient inverse problem and its performance for experimental backscatter data for buried targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Aleksandr E. Kolesov, Dinh-Liem Nguyen, Michael V. Klibanov","submitted_at":"2018-05-19T15:54:51Z","abstract_excerpt":"We present in this paper a novel numerical reconstruction method for solving a 3D coefficient inverse problem with scattering data generated by a single direction of the incident plane wave. This inverse problem is well-known to be a highly nonlinear and ill-posed problem. Therefore, optimization-based reconstruction methods for solving this problem would typically suffer from the local-minima trapping and require strong a priori information of the solution. To avoid these problems, in our numerical method, we aim to construct a cost functional with a globally strictly convex property, whose m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07618","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":"2026-05-18T00:15:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BnbRHh3X9PAiFHSoRWykN4BIs5+CVv+vLgsZeP1LoHRQ8Heuz1gF8NRF6DGby13fZ6Dic2EiJW6nkv59pfwgDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:51:10.645438Z"},"content_sha256":"4a4e5e96319d05317f4ae7792e6ea224481fa04ce9709d0f0b7e30f51163e5b4","schema_version":"1.0","event_id":"sha256:4a4e5e96319d05317f4ae7792e6ea224481fa04ce9709d0f0b7e30f51163e5b4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/bundle.json","state_url":"https://pith.science/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/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":"2026-06-03T19:51:10Z","links":{"resolver":"https://pith.science/pith/SIGPEKRQDELW3EYDVFBFJAK2SN","bundle":"https://pith.science/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/bundle.json","state":"https://pith.science/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SIGPEKRQDELW3EYDVFBFJAK2SN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SIGPEKRQDELW3EYDVFBFJAK2SN","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":"b49ae6dbca2dfa3fcb640abc215d14cc844c791df315c6c69230ff9d0f012e62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-19T15:54:51Z","title_canon_sha256":"bc47657c485ada79a1c5609af47d2f13bc248451bba70834f7753600c2093bda"},"schema_version":"1.0","source":{"id":"1805.07618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07618","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07618v1","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07618","created_at":"2026-05-18T00:15:33Z"},{"alias_kind":"pith_short_12","alias_value":"SIGPEKRQDELW","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SIGPEKRQDELW3EYD","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SIGPEKRQ","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:4a4e5e96319d05317f4ae7792e6ea224481fa04ce9709d0f0b7e30f51163e5b4","target":"graph","created_at":"2026-05-18T00:15:33Z","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 present in this paper a novel numerical reconstruction method for solving a 3D coefficient inverse problem with scattering data generated by a single direction of the incident plane wave. This inverse problem is well-known to be a highly nonlinear and ill-posed problem. Therefore, optimization-based reconstruction methods for solving this problem would typically suffer from the local-minima trapping and require strong a priori information of the solution. To avoid these problems, in our numerical method, we aim to construct a cost functional with a globally strictly convex property, whose m","authors_text":"Aleksandr E. Kolesov, Dinh-Liem Nguyen, Michael V. Klibanov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-19T15:54:51Z","title":"Convexification method for a coefficient inverse problem and its performance for experimental backscatter data for buried targets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07618","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:cb60b574b31b9eafb103d337429bb5924c2d29918759e37a4a11137878cb6459","target":"record","created_at":"2026-05-18T00:15:33Z","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":"b49ae6dbca2dfa3fcb640abc215d14cc844c791df315c6c69230ff9d0f012e62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-19T15:54:51Z","title_canon_sha256":"bc47657c485ada79a1c5609af47d2f13bc248451bba70834f7753600c2093bda"},"schema_version":"1.0","source":{"id":"1805.07618","kind":"arxiv","version":1}},"canonical_sha256":"920cf22a3019176d9303a94254815a93605d1c4e4a00271adc6ab91ff343ac87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"920cf22a3019176d9303a94254815a93605d1c4e4a00271adc6ab91ff343ac87","first_computed_at":"2026-05-18T00:15:33.027850Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:33.027850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8IZJKNOjIMzRdMzCqqix4t2EYubcm9RbrCL8yzWJ1c9i+7e9MyFo0WQJpdmlQ9xsie87COzlbEWl83oc4O77Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:33.028385Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.07618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb60b574b31b9eafb103d337429bb5924c2d29918759e37a4a11137878cb6459","sha256:4a4e5e96319d05317f4ae7792e6ea224481fa04ce9709d0f0b7e30f51163e5b4"],"state_sha256":"89ca2e05e15344ee26098fe6730db3e72cf48cfa117b3c848f21858fad73d1bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NB4RLbdBMExUQj8+UP7QCvrM8luQ+8fUkg0htJPQ3eNy6VaH1KOGOM1v8Ji7HmxjnGKdVPpIH4YpktxSg/G6DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T19:51:10.647439Z","bundle_sha256":"078207047833a87114308d6ba34c6fbde6aaab2cb7b31e9c45c2b6b4ba344664"}}