{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:B2SRUN5WBKTGSJWPMMQ36ESEAE","short_pith_number":"pith:B2SRUN5W","canonical_record":{"source":{"id":"1312.2385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-09T11:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"58b1d19513effefc4683f4e461ec81b5edb0d23a5862628160e545c5c19d461d","abstract_canon_sha256":"7728c94ade526fd2a7b292f19b1b89f187b1a33c8312309d0404c2729806b2a0"},"schema_version":"1.0"},"canonical_sha256":"0ea51a37b60aa66926cf6321bf12440129f3e65acdcd9477ddc7926305c3a5ec","source":{"kind":"arxiv","id":"1312.2385","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2385","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2385v1","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2385","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"pith_short_12","alias_value":"B2SRUN5WBKTG","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"B2SRUN5WBKTGSJWP","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"B2SRUN5W","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:B2SRUN5WBKTGSJWPMMQ36ESEAE","target":"record","payload":{"canonical_record":{"source":{"id":"1312.2385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-09T11:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"58b1d19513effefc4683f4e461ec81b5edb0d23a5862628160e545c5c19d461d","abstract_canon_sha256":"7728c94ade526fd2a7b292f19b1b89f187b1a33c8312309d0404c2729806b2a0"},"schema_version":"1.0"},"canonical_sha256":"0ea51a37b60aa66926cf6321bf12440129f3e65acdcd9477ddc7926305c3a5ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:24.673204Z","signature_b64":"31H+hVh6yTpSAYLIBdY6AN0O+8FJKvhfU7hoyVl+ncSuf3UDOJaiMPbRjuVbLeNsdE8YzwdWn/+M8Zz/rex0DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ea51a37b60aa66926cf6321bf12440129f3e65acdcd9477ddc7926305c3a5ec","last_reissued_at":"2026-05-18T02:17:24.672564Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:24.672564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.2385","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":"2026-05-18T02:17:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mZdyOC88OLMuX1hJKMVjcJl+3ONAhFfqwx6/KVOzpR1q17ldKWeVpo6euu2QY8mjVAVoxWprY5FtqRgzzHSqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:00:13.544840Z"},"content_sha256":"5954c8b7c0fc487ee76ad8a6e79ba6e2071dddadaac276ad3333f535f271f165","schema_version":"1.0","event_id":"sha256:5954c8b7c0fc487ee76ad8a6e79ba6e2071dddadaac276ad3333f535f271f165"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:B2SRUN5WBKTGSJWPMMQ36ESEAE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic Bianchi type II string cosmological model in loop quantum cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Bijan Saha, Mihai Visinescu, Victor Rikhvitsky","submitted_at":"2013-12-09T11:15:51Z","abstract_excerpt":"The loop quantum cosmology of the Bianchi type II string cosmological model in the presence of a homogeneous magnetic field is studied. We present the effective equations which provide modifications to the classical equations of motion due to quantum effects. The numerical simulations confirm that the big bang singularity is resolved by quantum gravity effects."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2385","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":"2026-05-18T02:17:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jg+JEs5uBendINR6HQ/rNn1lB/yTOKfSOHcnLvrfi9UQqAFWfvEF393X9vEdCQXnRZrYaZutQeWMQI/lh8wLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:00:13.545562Z"},"content_sha256":"3f6e5bbdede8076bd054ce8fbba4c8193ca30055f93989d84ddf26bcc262cf84","schema_version":"1.0","event_id":"sha256:3f6e5bbdede8076bd054ce8fbba4c8193ca30055f93989d84ddf26bcc262cf84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/bundle.json","state_url":"https://pith.science/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/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":"2026-06-10T05:00:13Z","links":{"resolver":"https://pith.science/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE","bundle":"https://pith.science/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/bundle.json","state":"https://pith.science/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B2SRUN5WBKTGSJWPMMQ36ESEAE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:B2SRUN5WBKTGSJWPMMQ36ESEAE","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":"7728c94ade526fd2a7b292f19b1b89f187b1a33c8312309d0404c2729806b2a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-09T11:15:51Z","title_canon_sha256":"58b1d19513effefc4683f4e461ec81b5edb0d23a5862628160e545c5c19d461d"},"schema_version":"1.0","source":{"id":"1312.2385","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2385","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2385v1","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2385","created_at":"2026-05-18T02:17:24Z"},{"alias_kind":"pith_short_12","alias_value":"B2SRUN5WBKTG","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"B2SRUN5WBKTGSJWP","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"B2SRUN5W","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:3f6e5bbdede8076bd054ce8fbba4c8193ca30055f93989d84ddf26bcc262cf84","target":"graph","created_at":"2026-05-18T02:17:24Z","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":"The loop quantum cosmology of the Bianchi type II string cosmological model in the presence of a homogeneous magnetic field is studied. We present the effective equations which provide modifications to the classical equations of motion due to quantum effects. The numerical simulations confirm that the big bang singularity is resolved by quantum gravity effects.","authors_text":"Bijan Saha, Mihai Visinescu, Victor Rikhvitsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-09T11:15:51Z","title":"Magnetic Bianchi type II string cosmological model in loop quantum cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2385","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":"sha256:5954c8b7c0fc487ee76ad8a6e79ba6e2071dddadaac276ad3333f535f271f165","target":"record","created_at":"2026-05-18T02:17:24Z","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":"7728c94ade526fd2a7b292f19b1b89f187b1a33c8312309d0404c2729806b2a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-09T11:15:51Z","title_canon_sha256":"58b1d19513effefc4683f4e461ec81b5edb0d23a5862628160e545c5c19d461d"},"schema_version":"1.0","source":{"id":"1312.2385","kind":"arxiv","version":1}},"canonical_sha256":"0ea51a37b60aa66926cf6321bf12440129f3e65acdcd9477ddc7926305c3a5ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ea51a37b60aa66926cf6321bf12440129f3e65acdcd9477ddc7926305c3a5ec","first_computed_at":"2026-05-18T02:17:24.672564Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:24.672564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"31H+hVh6yTpSAYLIBdY6AN0O+8FJKvhfU7hoyVl+ncSuf3UDOJaiMPbRjuVbLeNsdE8YzwdWn/+M8Zz/rex0DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:24.673204Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.2385","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5954c8b7c0fc487ee76ad8a6e79ba6e2071dddadaac276ad3333f535f271f165","sha256:3f6e5bbdede8076bd054ce8fbba4c8193ca30055f93989d84ddf26bcc262cf84"],"state_sha256":"375b5cd5c86c6da591461a70b7801ce630f866b8295df5709ab5023031e87ac2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WG8wRWc4enIfQYZtRrv/cYue2euKKwEapgRelyHxh75pyejsAqhFit6JUNG1Fr7ZpuieVQXvtto3EZMJ3l9lAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T05:00:13.549778Z","bundle_sha256":"66ec9c13b89ee19521827d16c95c08aa46e2a3b3862b01cd096c2d5e7942aab7"}}