{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:NQ32AAM4DAOFZEVGT75PKB6LNQ","short_pith_number":"pith:NQ32AAM4","canonical_record":{"source":{"id":"1204.0346","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-04-02T08:57:35Z","cross_cats_sorted":[],"title_canon_sha256":"bdcef0cfa3dfb893c8e9818c1bf7b8f0abdc15aa260a770ab07f5e31a321feb0","abstract_canon_sha256":"21f87dddbcc1c60e4707c44f174eda0f88e50e1437acf43cdda6ee20ad9bf9ba"},"schema_version":"1.0"},"canonical_sha256":"6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978","source":{"kind":"arxiv","id":"1204.0346","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.0346","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"arxiv_version","alias_value":"1204.0346v1","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.0346","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"pith_short_12","alias_value":"NQ32AAM4DAOF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NQ32AAM4DAOFZEVG","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NQ32AAM4","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:NQ32AAM4DAOFZEVGT75PKB6LNQ","target":"record","payload":{"canonical_record":{"source":{"id":"1204.0346","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-04-02T08:57:35Z","cross_cats_sorted":[],"title_canon_sha256":"bdcef0cfa3dfb893c8e9818c1bf7b8f0abdc15aa260a770ab07f5e31a321feb0","abstract_canon_sha256":"21f87dddbcc1c60e4707c44f174eda0f88e50e1437acf43cdda6ee20ad9bf9ba"},"schema_version":"1.0"},"canonical_sha256":"6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:58:49.550857Z","signature_b64":"ecJmmms7vWY/cQRwzapNIUaT+6PSlYmuoOr/6HAADcPwJbeBP0YgaynArsinQ81DAMzLfIDe566D5v9HDyiIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978","last_reissued_at":"2026-05-18T03:58:49.550092Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:58:49.550092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.0346","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":"2026-05-18T03:58:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p29oCKz7HXkKtG/sDLrYIFbD4LN6XHcmixSfnw5WAdw2l2M85rZFaEmjYQcgagzaQQVO/K6t+em42wLdOtzqAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:01:38.067579Z"},"content_sha256":"f8889cb5ebe7c32cf36ac82ec51f3e9e6e1e78bd93d9237872a4ce3c9b5de111","schema_version":"1.0","event_id":"sha256:f8889cb5ebe7c32cf36ac82ec51f3e9e6e1e78bd93d9237872a4ce3c9b5de111"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:NQ32AAM4DAOFZEVGT75PKB6LNQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Point measurements for a Neumann-to-Dirichlet map and the Calder\\'on problem in the plane","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AP","authors_text":"Nuutti Hyv\\\"onen, Otto Seiskari, Petteri Piiroinen","submitted_at":"2012-04-02T08:57:35Z","abstract_excerpt":"This work considers properties of the Neumann-to-Dirichlet map for the conductivity equation under the assumption that the conductivity is identically one close to the boundary of the examined smooth, bounded and simply connected domain. It is demonstrated that the so-called bisweep data, i.e., the (relative) potential differences between two boundary points when delta currents of opposite signs are applied at the very same points, uniquely determine the whole Neumann-to-Dirichlet map. In two dimensions, the bisweep data extend as a holomorphic function of two variables to some (interior) neig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0346","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":"2026-05-18T03:58:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+7S1jaSSUGGDbXHqYxiagCSGiap68ooxnrpKLB6VH1ryt8W2o2VUb7vA4xDTaT7OBx8QASARUhJmICd9cO2pCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:01:38.067917Z"},"content_sha256":"4a7ddc2c7752ee7b85ab5ee151e3c70132020fcd498a2e74ae2ed987d1538d5d","schema_version":"1.0","event_id":"sha256:4a7ddc2c7752ee7b85ab5ee151e3c70132020fcd498a2e74ae2ed987d1538d5d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/bundle.json","state_url":"https://pith.science/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/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":"2026-06-02T02:01:38Z","links":{"resolver":"https://pith.science/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ","bundle":"https://pith.science/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/bundle.json","state":"https://pith.science/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQ32AAM4DAOFZEVGT75PKB6LNQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NQ32AAM4DAOFZEVGT75PKB6LNQ","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":"21f87dddbcc1c60e4707c44f174eda0f88e50e1437acf43cdda6ee20ad9bf9ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-04-02T08:57:35Z","title_canon_sha256":"bdcef0cfa3dfb893c8e9818c1bf7b8f0abdc15aa260a770ab07f5e31a321feb0"},"schema_version":"1.0","source":{"id":"1204.0346","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.0346","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"arxiv_version","alias_value":"1204.0346v1","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.0346","created_at":"2026-05-18T03:58:49Z"},{"alias_kind":"pith_short_12","alias_value":"NQ32AAM4DAOF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NQ32AAM4DAOFZEVG","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NQ32AAM4","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:4a7ddc2c7752ee7b85ab5ee151e3c70132020fcd498a2e74ae2ed987d1538d5d","target":"graph","created_at":"2026-05-18T03:58:49Z","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":"This work considers properties of the Neumann-to-Dirichlet map for the conductivity equation under the assumption that the conductivity is identically one close to the boundary of the examined smooth, bounded and simply connected domain. It is demonstrated that the so-called bisweep data, i.e., the (relative) potential differences between two boundary points when delta currents of opposite signs are applied at the very same points, uniquely determine the whole Neumann-to-Dirichlet map. In two dimensions, the bisweep data extend as a holomorphic function of two variables to some (interior) neig","authors_text":"Nuutti Hyv\\\"onen, Otto Seiskari, Petteri Piiroinen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-04-02T08:57:35Z","title":"Point measurements for a Neumann-to-Dirichlet map and the Calder\\'on problem in the plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0346","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:f8889cb5ebe7c32cf36ac82ec51f3e9e6e1e78bd93d9237872a4ce3c9b5de111","target":"record","created_at":"2026-05-18T03:58:49Z","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":"21f87dddbcc1c60e4707c44f174eda0f88e50e1437acf43cdda6ee20ad9bf9ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AP","submitted_at":"2012-04-02T08:57:35Z","title_canon_sha256":"bdcef0cfa3dfb893c8e9818c1bf7b8f0abdc15aa260a770ab07f5e31a321feb0"},"schema_version":"1.0","source":{"id":"1204.0346","kind":"arxiv","version":1}},"canonical_sha256":"6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978","first_computed_at":"2026-05-18T03:58:49.550092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:58:49.550092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ecJmmms7vWY/cQRwzapNIUaT+6PSlYmuoOr/6HAADcPwJbeBP0YgaynArsinQ81DAMzLfIDe566D5v9HDyiIAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:58:49.550857Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.0346","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8889cb5ebe7c32cf36ac82ec51f3e9e6e1e78bd93d9237872a4ce3c9b5de111","sha256:4a7ddc2c7752ee7b85ab5ee151e3c70132020fcd498a2e74ae2ed987d1538d5d"],"state_sha256":"1fd2ea3afc27d0ad691eeb1af58260099f9da62e66a24f376f5232c90ec30c84"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0QnXmLV+NXpm41GzgUpC/SfLH4rYd0oGKBQXCt0IEoZUdHaHIKJnuWz9PGfmTk4kT0PIaOhuSwMGkFtwy0NhBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:01:38.069772Z","bundle_sha256":"d64de91eda9ef85a6b2e84c44ab5b10cc83146f07947f3e9e1133584511d1e7f"}}