{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:D4AJCOOEBTK6KAU5E5J537NXDW","short_pith_number":"pith:D4AJCOOE","canonical_record":{"source":{"id":"1404.0629","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.GR","submitted_at":"2014-03-25T12:24:55Z","cross_cats_sorted":[],"title_canon_sha256":"28c68daaa00bae046bc32eda17b81f959ddb1d0c49e80f544f8918d79654df82","abstract_canon_sha256":"d8f9db304fb592a261f647e4e3fec25862230a90759162c88d17526375c96811"},"schema_version":"1.0"},"canonical_sha256":"1f009139c40cd5e5029d2753ddfdb71d8d426b92fcff8afcc39d724775fcaa7e","source":{"kind":"arxiv","id":"1404.0629","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0629","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0629v1","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0629","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"pith_short_12","alias_value":"D4AJCOOEBTK6","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"D4AJCOOEBTK6KAU5","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"D4AJCOOE","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:D4AJCOOEBTK6KAU5E5J537NXDW","target":"record","payload":{"canonical_record":{"source":{"id":"1404.0629","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.GR","submitted_at":"2014-03-25T12:24:55Z","cross_cats_sorted":[],"title_canon_sha256":"28c68daaa00bae046bc32eda17b81f959ddb1d0c49e80f544f8918d79654df82","abstract_canon_sha256":"d8f9db304fb592a261f647e4e3fec25862230a90759162c88d17526375c96811"},"schema_version":"1.0"},"canonical_sha256":"1f009139c40cd5e5029d2753ddfdb71d8d426b92fcff8afcc39d724775fcaa7e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:55:02.958947Z","signature_b64":"cO6ZrDKqbZLgllHwLEsA72cIYN+H1C2POVXCujaS3lABfU2mYk0NsNj1UeuLOCJVJgbDRAbGpF3zMeXCipJtAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1f009139c40cd5e5029d2753ddfdb71d8d426b92fcff8afcc39d724775fcaa7e","last_reissued_at":"2026-05-18T02:55:02.958435Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:55:02.958435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.0629","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":"2026-05-18T02:55:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HwHQgK6ZR6v0+qcgj94n5XcPQ+FScXBpEJLBn2VmI3Z3ccyIccqrAv8sQKcoOnQkWW2cTsBTLdGfUlDHNWkcDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:26:05.079413Z"},"content_sha256":"cd5f12476ad2600aaa5acd450f4717a028c41c32fd853b878a6413b246b55f3f","schema_version":"1.0","event_id":"sha256:cd5f12476ad2600aaa5acd450f4717a028c41c32fd853b878a6413b246b55f3f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:D4AJCOOEBTK6KAU5E5J537NXDW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Abelian and metabelian quotients of surface braid groups","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.GR","authors_text":"Eddy Godelle (LMNO), John Guaschi (LMNO), Paolo Bellingeri (LMNO)","submitted_at":"2014-03-25T12:24:55Z","abstract_excerpt":"In this paper we study abelian and metabelian quotients of braid groups on oriented surfaces with boundary components. We provide group presentations and we prove rigidity results for these quotients arising from exact sequences related to (generalised) Fadell-Neuwirth fibrations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0629","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":"2026-05-18T02:55:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g97D26LHUvfK053AuwjGK9w7ZpaynJl2mQV/gEUbSwKS0S06i1e6HlyBmvMS9t9t5S6WK69001hMUzfczwBuCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:26:05.079943Z"},"content_sha256":"bf50fd380036f5ea9e9de74873a60939ac51c86f0936e0c3a2bd706a2dd9e80a","schema_version":"1.0","event_id":"sha256:bf50fd380036f5ea9e9de74873a60939ac51c86f0936e0c3a2bd706a2dd9e80a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D4AJCOOEBTK6KAU5E5J537NXDW/bundle.json","state_url":"https://pith.science/pith/D4AJCOOEBTK6KAU5E5J537NXDW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D4AJCOOEBTK6KAU5E5J537NXDW/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":"2026-05-27T04:26:05Z","links":{"resolver":"https://pith.science/pith/D4AJCOOEBTK6KAU5E5J537NXDW","bundle":"https://pith.science/pith/D4AJCOOEBTK6KAU5E5J537NXDW/bundle.json","state":"https://pith.science/pith/D4AJCOOEBTK6KAU5E5J537NXDW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D4AJCOOEBTK6KAU5E5J537NXDW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:D4AJCOOEBTK6KAU5E5J537NXDW","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":"d8f9db304fb592a261f647e4e3fec25862230a90759162c88d17526375c96811","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.GR","submitted_at":"2014-03-25T12:24:55Z","title_canon_sha256":"28c68daaa00bae046bc32eda17b81f959ddb1d0c49e80f544f8918d79654df82"},"schema_version":"1.0","source":{"id":"1404.0629","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0629","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0629v1","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0629","created_at":"2026-05-18T02:55:02Z"},{"alias_kind":"pith_short_12","alias_value":"D4AJCOOEBTK6","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"D4AJCOOEBTK6KAU5","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"D4AJCOOE","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:bf50fd380036f5ea9e9de74873a60939ac51c86f0936e0c3a2bd706a2dd9e80a","target":"graph","created_at":"2026-05-18T02:55:02Z","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":"In this paper we study abelian and metabelian quotients of braid groups on oriented surfaces with boundary components. We provide group presentations and we prove rigidity results for these quotients arising from exact sequences related to (generalised) Fadell-Neuwirth fibrations.","authors_text":"Eddy Godelle (LMNO), John Guaschi (LMNO), Paolo Bellingeri (LMNO)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.GR","submitted_at":"2014-03-25T12:24:55Z","title":"Abelian and metabelian quotients of surface braid groups"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0629","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:cd5f12476ad2600aaa5acd450f4717a028c41c32fd853b878a6413b246b55f3f","target":"record","created_at":"2026-05-18T02:55:02Z","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":"d8f9db304fb592a261f647e4e3fec25862230a90759162c88d17526375c96811","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.GR","submitted_at":"2014-03-25T12:24:55Z","title_canon_sha256":"28c68daaa00bae046bc32eda17b81f959ddb1d0c49e80f544f8918d79654df82"},"schema_version":"1.0","source":{"id":"1404.0629","kind":"arxiv","version":1}},"canonical_sha256":"1f009139c40cd5e5029d2753ddfdb71d8d426b92fcff8afcc39d724775fcaa7e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f009139c40cd5e5029d2753ddfdb71d8d426b92fcff8afcc39d724775fcaa7e","first_computed_at":"2026-05-18T02:55:02.958435Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:02.958435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cO6ZrDKqbZLgllHwLEsA72cIYN+H1C2POVXCujaS3lABfU2mYk0NsNj1UeuLOCJVJgbDRAbGpF3zMeXCipJtAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:02.958947Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.0629","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd5f12476ad2600aaa5acd450f4717a028c41c32fd853b878a6413b246b55f3f","sha256:bf50fd380036f5ea9e9de74873a60939ac51c86f0936e0c3a2bd706a2dd9e80a"],"state_sha256":"ea22e308668824cf57e1000166445f86e0878b26e296f61a5d6a82ac2048c8cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"abXj5rRELzRp+5priVv4l1E5m+7lWKOQb1oDcJX15UAzpoxWXv25m6BfZpgwM1wu3bTUca4pb/GVGrMfBgvQBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:26:05.082709Z","bundle_sha256":"0771685bea690338978be7f190dd475ee3df74865e7bbc9512df6c9efc6cac0c"}}