{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2KZSPP4QYYO5EXIDC2JSYUKDKB","short_pith_number":"pith:2KZSPP4Q","canonical_record":{"source":{"id":"1305.7502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2013-05-31T18:44:42Z","cross_cats_sorted":["math.RT"],"title_canon_sha256":"9fc4384fca1cc9a5ae6378137995c564b1c0a8e67b8950a3a198e9b9bfdc43ed","abstract_canon_sha256":"797c624a4e304b1b3cc93197fd97620431530391f1c51b38ed5bb62d179436e4"},"schema_version":"1.0"},"canonical_sha256":"d2b327bf90c61dd25d0316932c5143507d3bfeae8fc23f3afdf02cac85c16871","source":{"kind":"arxiv","id":"1305.7502","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.7502","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"arxiv_version","alias_value":"1305.7502v1","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.7502","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"pith_short_12","alias_value":"2KZSPP4QYYO5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2KZSPP4QYYO5EXID","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2KZSPP4Q","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2KZSPP4QYYO5EXIDC2JSYUKDKB","target":"record","payload":{"canonical_record":{"source":{"id":"1305.7502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2013-05-31T18:44:42Z","cross_cats_sorted":["math.RT"],"title_canon_sha256":"9fc4384fca1cc9a5ae6378137995c564b1c0a8e67b8950a3a198e9b9bfdc43ed","abstract_canon_sha256":"797c624a4e304b1b3cc93197fd97620431530391f1c51b38ed5bb62d179436e4"},"schema_version":"1.0"},"canonical_sha256":"d2b327bf90c61dd25d0316932c5143507d3bfeae8fc23f3afdf02cac85c16871","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:22:06.749462Z","signature_b64":"ZWCF+7NTISgJbXR9VFbUKAQDOYDqo29L4p18q2uNicGkRGNZ46+sMfyRIXokvJcJMAf0CwVGUvOVUICmXPEKBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2b327bf90c61dd25d0316932c5143507d3bfeae8fc23f3afdf02cac85c16871","last_reissued_at":"2026-05-18T03:22:06.748696Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:22:06.748696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.7502","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":"2026-05-18T03:22:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kSXz2IZbanB6w6UtM5MpJ9KIIy/Zzm/m6TXZaAxI2JR6AbTJu5Flut1j1/Gwx4ScFh+Oz5lONE9Ns7/wwIxwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T23:43:17.679520Z"},"content_sha256":"123673c0256e4e571c7ef7fef83e78a4b517d4f5294cc0a98468119239c7405e","schema_version":"1.0","event_id":"sha256:123673c0256e4e571c7ef7fef83e78a4b517d4f5294cc0a98468119239c7405e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2KZSPP4QYYO5EXIDC2JSYUKDKB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Desingularizations of quiver Grassmannians via graded quiver varieties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.RT"],"primary_cat":"math.AG","authors_text":"Bernhard Keller, Sarah Scherotzke","submitted_at":"2013-05-31T18:44:42Z","abstract_excerpt":"Inspired by recent work of Cerulli-Feigin-Reineke on desingularizations of quiver Grassmannians of representations of Dynkin quivers, we obtain desingularizations in considerably more general situations and in particular for Grassmannians of modules over iterated tilted algebras of Dynkin type. Our desingularization map is constructed from Nakajima's desingularization map for graded quiver varieties."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.7502","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":"2026-05-18T03:22:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FogFqsb1o+09lrazDWze+Gj0dKUOiJPZrN4SV7oNWJj+RKAR30mp1XILY7RXdRvUt9QQ9+3kr8jW2H6wNDGmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T23:43:17.679892Z"},"content_sha256":"ded42cacdc38e24d41b19bb41e52aa8f7b21a4ef977a13112a568c1f0ad686cc","schema_version":"1.0","event_id":"sha256:ded42cacdc38e24d41b19bb41e52aa8f7b21a4ef977a13112a568c1f0ad686cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/bundle.json","state_url":"https://pith.science/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/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":"2026-07-01T23:43:17Z","links":{"resolver":"https://pith.science/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB","bundle":"https://pith.science/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/bundle.json","state":"https://pith.science/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2KZSPP4QYYO5EXIDC2JSYUKDKB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2KZSPP4QYYO5EXIDC2JSYUKDKB","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":"797c624a4e304b1b3cc93197fd97620431530391f1c51b38ed5bb62d179436e4","cross_cats_sorted":["math.RT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2013-05-31T18:44:42Z","title_canon_sha256":"9fc4384fca1cc9a5ae6378137995c564b1c0a8e67b8950a3a198e9b9bfdc43ed"},"schema_version":"1.0","source":{"id":"1305.7502","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.7502","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"arxiv_version","alias_value":"1305.7502v1","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.7502","created_at":"2026-05-18T03:22:06Z"},{"alias_kind":"pith_short_12","alias_value":"2KZSPP4QYYO5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2KZSPP4QYYO5EXID","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2KZSPP4Q","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:ded42cacdc38e24d41b19bb41e52aa8f7b21a4ef977a13112a568c1f0ad686cc","target":"graph","created_at":"2026-05-18T03:22:06Z","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":"Inspired by recent work of Cerulli-Feigin-Reineke on desingularizations of quiver Grassmannians of representations of Dynkin quivers, we obtain desingularizations in considerably more general situations and in particular for Grassmannians of modules over iterated tilted algebras of Dynkin type. Our desingularization map is constructed from Nakajima's desingularization map for graded quiver varieties.","authors_text":"Bernhard Keller, Sarah Scherotzke","cross_cats":["math.RT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2013-05-31T18:44:42Z","title":"Desingularizations of quiver Grassmannians via graded quiver varieties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.7502","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":"sha256:123673c0256e4e571c7ef7fef83e78a4b517d4f5294cc0a98468119239c7405e","target":"record","created_at":"2026-05-18T03:22:06Z","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":"797c624a4e304b1b3cc93197fd97620431530391f1c51b38ed5bb62d179436e4","cross_cats_sorted":["math.RT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2013-05-31T18:44:42Z","title_canon_sha256":"9fc4384fca1cc9a5ae6378137995c564b1c0a8e67b8950a3a198e9b9bfdc43ed"},"schema_version":"1.0","source":{"id":"1305.7502","kind":"arxiv","version":1}},"canonical_sha256":"d2b327bf90c61dd25d0316932c5143507d3bfeae8fc23f3afdf02cac85c16871","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2b327bf90c61dd25d0316932c5143507d3bfeae8fc23f3afdf02cac85c16871","first_computed_at":"2026-05-18T03:22:06.748696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:22:06.748696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZWCF+7NTISgJbXR9VFbUKAQDOYDqo29L4p18q2uNicGkRGNZ46+sMfyRIXokvJcJMAf0CwVGUvOVUICmXPEKBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:22:06.749462Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.7502","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:123673c0256e4e571c7ef7fef83e78a4b517d4f5294cc0a98468119239c7405e","sha256:ded42cacdc38e24d41b19bb41e52aa8f7b21a4ef977a13112a568c1f0ad686cc"],"state_sha256":"87552adcba6cb69d44e4ba54f34db008eb255771592c2f435cf51fa972ad8352"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AH1VRRDV98z1YScR03HOj2nQkiU+/UqM/PDClX25grAUJ/PZxYb9qU7u86k8thlvGFtd5I3ZRW/xf3aaRp7LDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T23:43:17.682182Z","bundle_sha256":"6c656d674b6485a5af5889cb505d9830f5da23c78f12a75e22da8f51e1a8532c"}}