{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JDJWZIPAHSBZKVWYCPKU3HW72I","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":"34b86ff8ee11d00b394d7574bdcdd8c4b4ceb2a9124b9dc738e63d8bc139e736","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2017-04-06T12:40:26Z","title_canon_sha256":"40941b9ff3ddeebe0ac329fae60f0a0ec7190e915dc044aa72688b38d1e7dc01"},"schema_version":"1.0","source":{"id":"1704.01807","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01807","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01807v1","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01807","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"JDJWZIPAHSBZ","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"JDJWZIPAHSBZKVWY","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"JDJWZIPA","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:d07df2880d161f76634bc4c8832f7691b027e077639db79bb8aaf7841fe25f73","target":"graph","created_at":"2026-05-18T00:16:56Z","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 study a certain class of degenerations of Gushel-Mukai fourfolds as conic bundles, which we call tame degenerations and which are natural if one wants to prove that very general Gushel-Mukai fourfolds are irrational using the degeneration method due to Voisin, Colliot-Th\\'{e}l\\`{e}ne-Pirutka, Totaro et al. However, we prove that no such tame degenerations do exist.","authors_text":"Christian B\\\"ohning, Hans-Christian Graf von Bothmer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2017-04-06T12:40:26Z","title":"Degenerations of Gushel-Mukai fourfolds, with a view towards irrationality proofs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01807","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":"sha256:44f89c7b33cf75e04f959976e39eb7252c470dc2285ee9a411dc5a128a5b070b","target":"record","created_at":"2026-05-18T00:16:56Z","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":"34b86ff8ee11d00b394d7574bdcdd8c4b4ceb2a9124b9dc738e63d8bc139e736","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2017-04-06T12:40:26Z","title_canon_sha256":"40941b9ff3ddeebe0ac329fae60f0a0ec7190e915dc044aa72688b38d1e7dc01"},"schema_version":"1.0","source":{"id":"1704.01807","kind":"arxiv","version":1}},"canonical_sha256":"48d36ca1e03c839556d813d54d9edfd23f378dee35dfec29b64413aad64f7684","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48d36ca1e03c839556d813d54d9edfd23f378dee35dfec29b64413aad64f7684","first_computed_at":"2026-05-18T00:16:56.518048Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:56.518048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UySVUTowFx567yP+yAwipMC5szvnRvS+7iWXfL7MTOd4ERnJxEH4oYsJ7+OQhzTkCK5NJMp+aX9S0Clg67OmCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:56.518669Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.01807","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44f89c7b33cf75e04f959976e39eb7252c470dc2285ee9a411dc5a128a5b070b","sha256:d07df2880d161f76634bc4c8832f7691b027e077639db79bb8aaf7841fe25f73"],"state_sha256":"ab71f6979b2a8b6a0bee0b18b7bd679235eaa7ada709ea5119fe9199148912d3"}