{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MJ5BLOVSBJGBCFLOYPWFFRTOX2","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":"832433894c2ae4e10286523ada00ca53899669e905bf98a7b910da5b4e350a27","cross_cats_sorted":["physics.pop-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2012-09-10T13:26:15Z","title_canon_sha256":"00771ec8a6182d2d5cc31e8327e0b6d87a5c0f3d6749320d6b282a52911c7478"},"schema_version":"1.0","source":{"id":"1209.1982","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.1982","created_at":"2026-05-18T03:45:53Z"},{"alias_kind":"arxiv_version","alias_value":"1209.1982v1","created_at":"2026-05-18T03:45:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.1982","created_at":"2026-05-18T03:45:53Z"},{"alias_kind":"pith_short_12","alias_value":"MJ5BLOVSBJGB","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MJ5BLOVSBJGBCFLO","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MJ5BLOVS","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:5777b30f14e11a92dfc9de605617fd6ab0ec87965d43078ea73e475072a2f856","target":"graph","created_at":"2026-05-18T03:45:53Z","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":"Time directions are not invariant in conventional thermodynamics. We broadly follow ideas of Ludwig Boltzmann and investigate implications of postulating time-directional invariance in thermodynamics. In this investigation, we require that thermodynamic descriptions are not changed under time reversal accompanied by replacement of matter by antimatter (i.e. CPT-invariant thermodynamics). The matter and antimatter are defined as thermodynamic concepts without detailing their physical structure.\n  Our analysis stays within the limits of conceptual thermodynamics and leads to effective negative t","authors_text":"A. Y. Klimenko, U.Maas","cross_cats":["physics.pop-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2012-09-10T13:26:15Z","title":"Thermodynamics and time-directional invariance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.1982","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":"sha256:07d5395ca84b98cb0864398a3274e61510da1d3f145c91dcf117a77e4e19beda","target":"record","created_at":"2026-05-18T03:45:53Z","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":"832433894c2ae4e10286523ada00ca53899669e905bf98a7b910da5b4e350a27","cross_cats_sorted":["physics.pop-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2012-09-10T13:26:15Z","title_canon_sha256":"00771ec8a6182d2d5cc31e8327e0b6d87a5c0f3d6749320d6b282a52911c7478"},"schema_version":"1.0","source":{"id":"1209.1982","kind":"arxiv","version":1}},"canonical_sha256":"627a15bab20a4c11156ec3ec52c66ebe82480ce6a5500f926c706b1421d170c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"627a15bab20a4c11156ec3ec52c66ebe82480ce6a5500f926c706b1421d170c0","first_computed_at":"2026-05-18T03:45:53.952970Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:53.952970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pZfemOgsApBGXLbNdHH7LWv34l2WhHrlEap+G/7oLeYYUhYAMA5ajT3GtE92BcoXZoajJeLQD/94q3sXwM5UAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:53.953461Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.1982","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07d5395ca84b98cb0864398a3274e61510da1d3f145c91dcf117a77e4e19beda","sha256:5777b30f14e11a92dfc9de605617fd6ab0ec87965d43078ea73e475072a2f856"],"state_sha256":"2ecdd436217aa3e015a427dc9ef84ffe50bb75997a3f0e91b9d940b91be260b0"}