{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:WDBXUEYJYRTAJU43JUEYLEKFYW","short_pith_number":"pith:WDBXUEYJ","canonical_record":{"source":{"id":"hep-th/0405134","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2004-05-14T19:05:24Z","cross_cats_sorted":[],"title_canon_sha256":"c241e77b930a42c263669251faf94b0b159980672339f3eab811e47d35774e46","abstract_canon_sha256":"ad6636049f6ab2f3ac35d7f1eee7047e7468552bed574b8bdbbec145f14a859c"},"schema_version":"1.0"},"canonical_sha256":"b0c37a1309c46604d39b4d09859145c593156a0a8fd05f1ea004c99247f5a052","source":{"kind":"arxiv","id":"hep-th/0405134","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0405134","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0405134v2","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0405134","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_12","alias_value":"WDBXUEYJYRTA","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_16","alias_value":"WDBXUEYJYRTAJU43","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_8","alias_value":"WDBXUEYJ","created_at":"2026-07-04T15:20:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:WDBXUEYJYRTAJU43JUEYLEKFYW","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/0405134","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2004-05-14T19:05:24Z","cross_cats_sorted":[],"title_canon_sha256":"c241e77b930a42c263669251faf94b0b159980672339f3eab811e47d35774e46","abstract_canon_sha256":"ad6636049f6ab2f3ac35d7f1eee7047e7468552bed574b8bdbbec145f14a859c"},"schema_version":"1.0"},"canonical_sha256":"b0c37a1309c46604d39b4d09859145c593156a0a8fd05f1ea004c99247f5a052","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:20:29.019108Z","signature_b64":"dy3GTSrxYMtFAGULCJDlTEMt+2hI2M3nSgLmbTapJQpMuIe0wWsqiM95+biUKWfwD5ArNdreM5Wxhiy+L647AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0c37a1309c46604d39b4d09859145c593156a0a8fd05f1ea004c99247f5a052","last_reissued_at":"2026-07-04T15:20:29.018780Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:20:29.018780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/0405134","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:20:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yGNXQVPu/yOAJtWToaeTU0dQ4Hx+u3qoP5GzL2VF1kB/R95f9C1lmp7m9bebDdY7MoM0PcftBmXurOyb2jswAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:33:13.359100Z"},"content_sha256":"e6fbc3addef8ed657cf8eaca64abb68c1a2c1d266072bcc54d27dba36186bce5","schema_version":"1.0","event_id":"sha256:e6fbc3addef8ed657cf8eaca64abb68c1a2c1d266072bcc54d27dba36186bce5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:WDBXUEYJYRTAJU43JUEYLEKFYW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"D-Branes on Vanishing del Pezzo Surfaces","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Ilarion V. Melnikov, Paul S. Aspinwall","submitted_at":"2004-05-14T19:05:24Z","abstract_excerpt":"We analyze in detail the case of a marginally stable D-Brane on a collapsed del Pezzo surface in a Calabi-Yau threefold using the derived category of quiver representations and the idea of aligned gradings. We show how the derived category approach to D-branes provides a straight-forward and rigorous construction of quiver gauge theories associated to such singularities. Our method shows that a procedure involving exceptional collections used elsewhere in the literature is only valid if some tachyon-inducing Ext3 groups are zero. We then analyze in generality a large class of Seiberg dualities"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0405134","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-th/0405134/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:20:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wjQOpeIlFXX/QC1yazzlYaT5eQECOtWLn8h4PhhWRZEbWNImC5x9xKXYhJuvtFYcdiAQSYj80+L+E4qY1fa3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:33:13.359491Z"},"content_sha256":"4535a63e003a6ee2165cdd487bf7a787adf94b500aea19a281676e6c0269c29a","schema_version":"1.0","event_id":"sha256:4535a63e003a6ee2165cdd487bf7a787adf94b500aea19a281676e6c0269c29a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/bundle.json","state_url":"https://pith.science/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/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":"2026-08-03T17:33:13Z","links":{"resolver":"https://pith.science/pith/WDBXUEYJYRTAJU43JUEYLEKFYW","bundle":"https://pith.science/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/bundle.json","state":"https://pith.science/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WDBXUEYJYRTAJU43JUEYLEKFYW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:WDBXUEYJYRTAJU43JUEYLEKFYW","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":"ad6636049f6ab2f3ac35d7f1eee7047e7468552bed574b8bdbbec145f14a859c","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2004-05-14T19:05:24Z","title_canon_sha256":"c241e77b930a42c263669251faf94b0b159980672339f3eab811e47d35774e46"},"schema_version":"1.0","source":{"id":"hep-th/0405134","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0405134","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0405134v2","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0405134","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_12","alias_value":"WDBXUEYJYRTA","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_16","alias_value":"WDBXUEYJYRTAJU43","created_at":"2026-07-04T15:20:29Z"},{"alias_kind":"pith_short_8","alias_value":"WDBXUEYJ","created_at":"2026-07-04T15:20:29Z"}],"graph_snapshots":[{"event_id":"sha256:4535a63e003a6ee2165cdd487bf7a787adf94b500aea19a281676e6c0269c29a","target":"graph","created_at":"2026-07-04T15:20:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-th/0405134/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze in detail the case of a marginally stable D-Brane on a collapsed del Pezzo surface in a Calabi-Yau threefold using the derived category of quiver representations and the idea of aligned gradings. We show how the derived category approach to D-branes provides a straight-forward and rigorous construction of quiver gauge theories associated to such singularities. Our method shows that a procedure involving exceptional collections used elsewhere in the literature is only valid if some tachyon-inducing Ext3 groups are zero. We then analyze in generality a large class of Seiberg dualities","authors_text":"Ilarion V. Melnikov, Paul S. Aspinwall","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2004-05-14T19:05:24Z","title":"D-Branes on Vanishing del Pezzo Surfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0405134","kind":"arxiv","version":2},"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:e6fbc3addef8ed657cf8eaca64abb68c1a2c1d266072bcc54d27dba36186bce5","target":"record","created_at":"2026-07-04T15:20:29Z","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":"ad6636049f6ab2f3ac35d7f1eee7047e7468552bed574b8bdbbec145f14a859c","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2004-05-14T19:05:24Z","title_canon_sha256":"c241e77b930a42c263669251faf94b0b159980672339f3eab811e47d35774e46"},"schema_version":"1.0","source":{"id":"hep-th/0405134","kind":"arxiv","version":2}},"canonical_sha256":"b0c37a1309c46604d39b4d09859145c593156a0a8fd05f1ea004c99247f5a052","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0c37a1309c46604d39b4d09859145c593156a0a8fd05f1ea004c99247f5a052","first_computed_at":"2026-07-04T15:20:29.018780Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:20:29.018780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dy3GTSrxYMtFAGULCJDlTEMt+2hI2M3nSgLmbTapJQpMuIe0wWsqiM95+biUKWfwD5ArNdreM5Wxhiy+L647AQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:20:29.019108Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0405134","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6fbc3addef8ed657cf8eaca64abb68c1a2c1d266072bcc54d27dba36186bce5","sha256:4535a63e003a6ee2165cdd487bf7a787adf94b500aea19a281676e6c0269c29a"],"state_sha256":"2b558ba43ad6e3b8f991d15218d94ac4bc8f1bbb64d32946b310ef2f08ec4643"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jKDYpmzpht2Ea8a5ZEfqvYSgq7m2eBT57Trch6OzDxr6qjb0VwQd5qNNOBtTHG64vThnf+EJWon0nUv+HNjlAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:33:13.362000Z","bundle_sha256":"f8409b8e125447b11e90f82aba1657445eefca014a0b968ab008ac5cfc218739"}}