{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:MJXAW37DDQ6IAVHUVB25YC5VGI","short_pith_number":"pith:MJXAW37D","canonical_record":{"source":{"id":"gr-qc/0101050","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","cross_cats_sorted":[],"title_canon_sha256":"d38b30b97ea7398f9ba6a50cf305c0657d43720c87c921456ed061caa0596fe1","abstract_canon_sha256":"07d5706bf4a7ee67e57d9aba343c7c4bdef4f9283faf696f80d0cd661f60ed7c"},"schema_version":"1.0"},"canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","source":{"kind":"arxiv","id":"gr-qc/0101050","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0101050","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0101050v2","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0101050","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_12","alias_value":"MJXAW37DDQ6I","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_16","alias_value":"MJXAW37DDQ6IAVHU","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_8","alias_value":"MJXAW37D","created_at":"2026-07-04T15:40:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:MJXAW37DDQ6IAVHUVB25YC5VGI","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/0101050","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","cross_cats_sorted":[],"title_canon_sha256":"d38b30b97ea7398f9ba6a50cf305c0657d43720c87c921456ed061caa0596fe1","abstract_canon_sha256":"07d5706bf4a7ee67e57d9aba343c7c4bdef4f9283faf696f80d0cd661f60ed7c"},"schema_version":"1.0"},"canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:40:35.328798Z","signature_b64":"4Vz6/nkwBvfw6rB1kHeUy9gXENmHzPLYX2Hw8uHqQy2EiwKlj9k2lVk5YnB2nCBvnnfel74FfL5VDVbr0WzyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","last_reissued_at":"2026-07-04T15:40:35.328454Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:40:35.328454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/0101050","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:40:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g8hslYhypEaTHXI7Hlz2S0GS1QpB1/O+TYAHZMqOYtYAfgYdVV7Sl1Y35irJP/IV5ahkQh/mKlD3PDqFblDVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T20:21:03.066641Z"},"content_sha256":"383e363df350c4cd0eef7a25453fab33a816418986ae64c12b54aaa2b1f7456d","schema_version":"1.0","event_id":"sha256:383e363df350c4cd0eef7a25453fab33a816418986ae64c12b54aaa2b1f7456d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:MJXAW37DDQ6IAVHUVB25YC5VGI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A cosmological model in Weyl-Cartan spacetime","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Dirk Puetzfeld, Romualdo Tresguerres","submitted_at":"2001-01-15T14:05:43Z","abstract_excerpt":"We present a cosmological model for early stages of the universe on the basis of a Weyl-Cartan spacetime. In this model, torsion $T^{\\alpha}$ and nonmetricity $Q_{\\alpha \\beta}$ are proportional to the vacuum polarization. Extending earlier work of one of us (RT), we discuss the behavior of the cosmic scale factor and the Weyl 1-form in detail. We show how our model fits into the more general framework of metric-affine gravity (MAG)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0101050","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/gr-qc/0101050/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:40:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tO7rnrwEw3MMJTPC7EJ2nGSwT1bb9+kCu2aD5BGyj8kTjDbCoPm1BG+MbttbsJYGiBNqGMsQ73O7NL9hq1hgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T20:21:03.067149Z"},"content_sha256":"fe80036b33b7476595bc835a0e89dc7ec122a14f187df84e60dfde545f9e630d","schema_version":"1.0","event_id":"sha256:fe80036b33b7476595bc835a0e89dc7ec122a14f187df84e60dfde545f9e630d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/bundle.json","state_url":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/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":"2026-08-21T20:21:03Z","links":{"resolver":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI","bundle":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/bundle.json","state":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:MJXAW37DDQ6IAVHUVB25YC5VGI","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":"07d5706bf4a7ee67e57d9aba343c7c4bdef4f9283faf696f80d0cd661f60ed7c","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","title_canon_sha256":"d38b30b97ea7398f9ba6a50cf305c0657d43720c87c921456ed061caa0596fe1"},"schema_version":"1.0","source":{"id":"gr-qc/0101050","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0101050","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0101050v2","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0101050","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_12","alias_value":"MJXAW37DDQ6I","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_16","alias_value":"MJXAW37DDQ6IAVHU","created_at":"2026-07-04T15:40:35Z"},{"alias_kind":"pith_short_8","alias_value":"MJXAW37D","created_at":"2026-07-04T15:40:35Z"}],"graph_snapshots":[{"event_id":"sha256:fe80036b33b7476595bc835a0e89dc7ec122a14f187df84e60dfde545f9e630d","target":"graph","created_at":"2026-07-04T15:40:35Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/gr-qc/0101050/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a cosmological model for early stages of the universe on the basis of a Weyl-Cartan spacetime. In this model, torsion $T^{\\alpha}$ and nonmetricity $Q_{\\alpha \\beta}$ are proportional to the vacuum polarization. Extending earlier work of one of us (RT), we discuss the behavior of the cosmic scale factor and the Weyl 1-form in detail. We show how our model fits into the more general framework of metric-affine gravity (MAG).","authors_text":"Dirk Puetzfeld, Romualdo Tresguerres","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","title":"A cosmological model in Weyl-Cartan spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0101050","kind":"arxiv","version":2},"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":"sha256:383e363df350c4cd0eef7a25453fab33a816418986ae64c12b54aaa2b1f7456d","target":"record","created_at":"2026-07-04T15:40:35Z","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":"07d5706bf4a7ee67e57d9aba343c7c4bdef4f9283faf696f80d0cd661f60ed7c","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","title_canon_sha256":"d38b30b97ea7398f9ba6a50cf305c0657d43720c87c921456ed061caa0596fe1"},"schema_version":"1.0","source":{"id":"gr-qc/0101050","kind":"arxiv","version":2}},"canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","first_computed_at":"2026-07-04T15:40:35.328454Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:40:35.328454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Vz6/nkwBvfw6rB1kHeUy9gXENmHzPLYX2Hw8uHqQy2EiwKlj9k2lVk5YnB2nCBvnnfel74FfL5VDVbr0WzyDg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:40:35.328798Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/0101050","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:383e363df350c4cd0eef7a25453fab33a816418986ae64c12b54aaa2b1f7456d","sha256:fe80036b33b7476595bc835a0e89dc7ec122a14f187df84e60dfde545f9e630d"],"state_sha256":"2b7a0627f26397fece30bf4b86418650d0805f7d32671a8f4700c1f298a17215"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7lszBtl8HyD/QqcBIVx1Qn8u3FXRrpjACZRxi0GaYD/Tb0vNyF8Bnl7xnO3kOdhwN6RWHyuJjcmEeOVttUZ2CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T20:21:03.072976Z","bundle_sha256":"2ba23bbe5119632708e7dfa9bd4c20a29c7eb1311aa7aaafeee0a3faa698c295"}}