{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PTL6D5RLORR6VV3M6BYOCULEUN","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":"2d68571950422322d57eea35d5173f5ff2482abba9fc4724581f65f69ad08bcc","cross_cats_sorted":["cs.DS","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-11-09T06:45:24Z","title_canon_sha256":"43d04c51a1977fa16cf18e6c675ac611db1caf4d2df69e0c8418295b089ace6c"},"schema_version":"1.0","source":{"id":"1711.03272","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.03272","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"arxiv_version","alias_value":"1711.03272v1","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03272","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"pith_short_12","alias_value":"PTL6D5RLORR6","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PTL6D5RLORR6VV3M","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PTL6D5RL","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:2997a57c7d5cc28af469ced3cd378da3d62c3f04fc07b344ea728a1ceaef8046","target":"graph","created_at":"2026-05-18T00:30:56Z","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":"Concurrent separation logics have helped to significantly simplify correctness proofs for concurrent data structures. However, a recurring problem in such proofs is that data structure abstractions that work well in the sequential setting are much harder to reason about in a concurrent setting due to complex sharing and overlays. To solve this problem, we propose a novel approach to abstracting regions in the heap by encoding the data structure invariant into a local condition on each individual node. This condition may depend on a quantity associated with the node that is computed as a fixpoi","authors_text":"Dennis Shasha, Siddharth Krishna, Thomas Wies","cross_cats":["cs.DS","cs.PL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-11-09T06:45:24Z","title":"Go with the Flow: Compositional Abstractions for Concurrent Data Structures (Extended Version)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03272","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":"sha256:57dfaf2ad14eb5e7a7eca5b999fecdc8fb5709c26e01542111b6692100084463","target":"record","created_at":"2026-05-18T00:30:56Z","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":"2d68571950422322d57eea35d5173f5ff2482abba9fc4724581f65f69ad08bcc","cross_cats_sorted":["cs.DS","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-11-09T06:45:24Z","title_canon_sha256":"43d04c51a1977fa16cf18e6c675ac611db1caf4d2df69e0c8418295b089ace6c"},"schema_version":"1.0","source":{"id":"1711.03272","kind":"arxiv","version":1}},"canonical_sha256":"7cd7e1f62b7463ead76cf070e15164a35bba0d15a888255d6c6b488c15786bd8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cd7e1f62b7463ead76cf070e15164a35bba0d15a888255d6c6b488c15786bd8","first_computed_at":"2026-05-18T00:30:56.733041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:56.733041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v5qvPA3arq7EMS9GNAO7aCzdS+E3gAPAtcrvkJT6UKChBPN++e2P4g6VxB54QQfCCFhWk3fV1HhD27nL7nAdBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:56.733753Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.03272","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57dfaf2ad14eb5e7a7eca5b999fecdc8fb5709c26e01542111b6692100084463","sha256:2997a57c7d5cc28af469ced3cd378da3d62c3f04fc07b344ea728a1ceaef8046"],"state_sha256":"1511cc6ddd7dc0b5052325343c29c500a179ef8f283e2a5fc8777ca21b6dcf15"}