{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DTTJWKCGRQ4EUA7WWVLCWVBGEP","short_pith_number":"pith:DTTJWKCG","canonical_record":{"source":{"id":"1801.02113","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2018-01-07T02:28:03Z","cross_cats_sorted":[],"title_canon_sha256":"b25bbf94adb8543e5b610b0993ba92d78fb9209876b56c4f26025ba2349c6055","abstract_canon_sha256":"abf0acc63db75023eadbef13eb5347e3a4ffab4b4677643207412c8dcc90f026"},"schema_version":"1.0"},"canonical_sha256":"1ce69b28468c384a03f6b5562b542623c1f4b2e938ca4cc663a4d37c2163e22b","source":{"kind":"arxiv","id":"1801.02113","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.02113","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1801.02113v4","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.02113","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"DTTJWKCGRQ4E","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DTTJWKCGRQ4EUA7W","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DTTJWKCG","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DTTJWKCGRQ4EUA7WWVLCWVBGEP","target":"record","payload":{"canonical_record":{"source":{"id":"1801.02113","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2018-01-07T02:28:03Z","cross_cats_sorted":[],"title_canon_sha256":"b25bbf94adb8543e5b610b0993ba92d78fb9209876b56c4f26025ba2349c6055","abstract_canon_sha256":"abf0acc63db75023eadbef13eb5347e3a4ffab4b4677643207412c8dcc90f026"},"schema_version":"1.0"},"canonical_sha256":"1ce69b28468c384a03f6b5562b542623c1f4b2e938ca4cc663a4d37c2163e22b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:01.084527Z","signature_b64":"MFs7GEHpouX2htSi5Gx3GC5uG7Lwrvq20el6TVa8Q+nk1yshWvI4gFlpkVCwErzfwXzNv++I2RGMigEZ8XsrBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ce69b28468c384a03f6b5562b542623c1f4b2e938ca4cc663a4d37c2163e22b","last_reissued_at":"2026-05-17T23:55:01.084093Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:01.084093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.02113","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Feh5OlJjUQGb4zbUxRREC98Yn5mwOVbfEDnSffGC7xoFAFK9ASDSDUzOrPEZ2FUgbOhwbZWokRlGYYvFyFrcBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T05:39:56.406676Z"},"content_sha256":"52581a98f86c68640998354b9e7b0c6a81731673f2a404a984a023793a9a47da","schema_version":"1.0","event_id":"sha256:52581a98f86c68640998354b9e7b0c6a81731673f2a404a984a023793a9a47da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DTTJWKCGRQ4EUA7WWVLCWVBGEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Intersection Cohomology and Perverse Eigenspaces of the Monodromy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"David B. Massey","submitted_at":"2018-01-07T02:28:03Z","abstract_excerpt":"We describe the relationship between intersection cohomology with twisted coefficients and the perverse sheaves which play the role of the eigenspaces for the Milnor monodromy of an affine hypersurface."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.02113","kind":"arxiv","version":4},"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":"2026-05-17T23:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T+bNQwVaxqgJRVJCe/Qxt1knXt601blbbRqatME8AFGavd0csH2lst0Yy524KqIbf7bAgXck+AgeH0MjwPP2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T05:39:56.407007Z"},"content_sha256":"00417c6cd11c31b02a066dfa91632baf5c40f0add450c91d45ed627a468c8924","schema_version":"1.0","event_id":"sha256:00417c6cd11c31b02a066dfa91632baf5c40f0add450c91d45ed627a468c8924"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/bundle.json","state_url":"https://pith.science/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/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":"2026-06-25T05:39:56Z","links":{"resolver":"https://pith.science/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP","bundle":"https://pith.science/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/bundle.json","state":"https://pith.science/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DTTJWKCGRQ4EUA7WWVLCWVBGEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DTTJWKCGRQ4EUA7WWVLCWVBGEP","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":"abf0acc63db75023eadbef13eb5347e3a4ffab4b4677643207412c8dcc90f026","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2018-01-07T02:28:03Z","title_canon_sha256":"b25bbf94adb8543e5b610b0993ba92d78fb9209876b56c4f26025ba2349c6055"},"schema_version":"1.0","source":{"id":"1801.02113","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.02113","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1801.02113v4","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.02113","created_at":"2026-05-17T23:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"DTTJWKCGRQ4E","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DTTJWKCGRQ4EUA7W","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DTTJWKCG","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:00417c6cd11c31b02a066dfa91632baf5c40f0add450c91d45ed627a468c8924","target":"graph","created_at":"2026-05-17T23:55:01Z","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 describe the relationship between intersection cohomology with twisted coefficients and the perverse sheaves which play the role of the eigenspaces for the Milnor monodromy of an affine hypersurface.","authors_text":"David B. Massey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2018-01-07T02:28:03Z","title":"Intersection Cohomology and Perverse Eigenspaces of the Monodromy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.02113","kind":"arxiv","version":4},"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":"sha256:52581a98f86c68640998354b9e7b0c6a81731673f2a404a984a023793a9a47da","target":"record","created_at":"2026-05-17T23:55:01Z","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":"abf0acc63db75023eadbef13eb5347e3a4ffab4b4677643207412c8dcc90f026","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2018-01-07T02:28:03Z","title_canon_sha256":"b25bbf94adb8543e5b610b0993ba92d78fb9209876b56c4f26025ba2349c6055"},"schema_version":"1.0","source":{"id":"1801.02113","kind":"arxiv","version":4}},"canonical_sha256":"1ce69b28468c384a03f6b5562b542623c1f4b2e938ca4cc663a4d37c2163e22b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ce69b28468c384a03f6b5562b542623c1f4b2e938ca4cc663a4d37c2163e22b","first_computed_at":"2026-05-17T23:55:01.084093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:01.084093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MFs7GEHpouX2htSi5Gx3GC5uG7Lwrvq20el6TVa8Q+nk1yshWvI4gFlpkVCwErzfwXzNv++I2RGMigEZ8XsrBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:01.084527Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.02113","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52581a98f86c68640998354b9e7b0c6a81731673f2a404a984a023793a9a47da","sha256:00417c6cd11c31b02a066dfa91632baf5c40f0add450c91d45ed627a468c8924"],"state_sha256":"b7fb6ddb3faf23d275a2bf4e7e1eb6b859addff28f9224315143918870a9563d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMzcG+XUfFxiGLkwCMzy+M9qI3RHdg5jPiDnAGkWYDLkUSa8TBHhDdb1c92HjMs+QYub9wdrBDKntOz8HrJYDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T05:39:56.408985Z","bundle_sha256":"673b13b125b97a73b3d89022d4314d4a8f40db5a3cf49510f9408808513d0296"}}