{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DQME6ZL4RDV3H62W763ZY33EDY","short_pith_number":"pith:DQME6ZL4","canonical_record":{"source":{"id":"1308.3910","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-08-19T01:50:20Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"4ce8dc7e220dd29d014bd6a919cb8e27acc67344e20cae4fa9fa8f91bb699cd2","abstract_canon_sha256":"16c60cd20096fb43f1cc364c010bc21268b4bf3dc6124a098739ad9e40fd401f"},"schema_version":"1.0"},"canonical_sha256":"1c184f657c88ebb3fb56ffb79c6f641e2c65a7c0b281946ad449e005d7da98a2","source":{"kind":"arxiv","id":"1308.3910","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3910","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3910v1","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3910","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"DQME6ZL4RDV3","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DQME6ZL4RDV3H62W","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DQME6ZL4","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DQME6ZL4RDV3H62W763ZY33EDY","target":"record","payload":{"canonical_record":{"source":{"id":"1308.3910","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-08-19T01:50:20Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"4ce8dc7e220dd29d014bd6a919cb8e27acc67344e20cae4fa9fa8f91bb699cd2","abstract_canon_sha256":"16c60cd20096fb43f1cc364c010bc21268b4bf3dc6124a098739ad9e40fd401f"},"schema_version":"1.0"},"canonical_sha256":"1c184f657c88ebb3fb56ffb79c6f641e2c65a7c0b281946ad449e005d7da98a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:14.176594Z","signature_b64":"qDQLbTtZoviw5WFEV6FwLc51HFelDq/dOrY+yHGC8S9MXZh6X5L7h+7grV1/PbH5GS0Bz0GL08XhFMaX1nspBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c184f657c88ebb3fb56ffb79c6f641e2c65a7c0b281946ad449e005d7da98a2","last_reissued_at":"2026-05-18T01:48:14.175937Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:14.175937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.3910","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":"2026-05-18T01:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n5QcNCSBotAxifOm+ic9ag5zXeCkDyrzPNAUakuvkrRwdc7xdwOSTQj6s9bZXN+KUNcyzLmxo+newMVCk8W0Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:00:07.598567Z"},"content_sha256":"85ad28c20e5c5f0fd6ee7ab539ff06c84c7b74199930195ec8bc7948cd7bf02a","schema_version":"1.0","event_id":"sha256:85ad28c20e5c5f0fd6ee7ab539ff06c84c7b74199930195ec8bc7948cd7bf02a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DQME6ZL4RDV3H62W763ZY33EDY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exact cosmological solutions from Hojman conservation quantities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Mahmood Roshan, Salvatore Capozziello","submitted_at":"2013-08-19T01:50:20Z","abstract_excerpt":"We present a new approach to find exact solutions for cosmological models. By requiring the existence of a symmetry transformation vector for the equations of motion of the given cosmological model (without using either Lagrangian or Hamiltonian), one can find corresponding Hojman conserved quantities. With the help of these conserved quantities, the analysis of the cosmological model can be simplified. In the case of quintessence scalar-tensor models, we show that the Hojman conserved quantities exist for a wide range of V(\\phi)-potentials and allow to find exact solutions for the cosmic scal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3910","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":"2026-05-18T01:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"whaBwamKJsvEbmRb93hRepqzQ6qaC2DfECGrLpeOlq9+ooWiC9yy2WXRtm8/sxFltm25Qro3y71VmCSWfUmyCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:00:07.599118Z"},"content_sha256":"1222d680d9348bd2997d1a0f0d5039a3c44e0a339a25d670a920314ad2e463b7","schema_version":"1.0","event_id":"sha256:1222d680d9348bd2997d1a0f0d5039a3c44e0a339a25d670a920314ad2e463b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DQME6ZL4RDV3H62W763ZY33EDY/bundle.json","state_url":"https://pith.science/pith/DQME6ZL4RDV3H62W763ZY33EDY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DQME6ZL4RDV3H62W763ZY33EDY/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":"2026-06-05T05:00:07Z","links":{"resolver":"https://pith.science/pith/DQME6ZL4RDV3H62W763ZY33EDY","bundle":"https://pith.science/pith/DQME6ZL4RDV3H62W763ZY33EDY/bundle.json","state":"https://pith.science/pith/DQME6ZL4RDV3H62W763ZY33EDY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DQME6ZL4RDV3H62W763ZY33EDY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DQME6ZL4RDV3H62W763ZY33EDY","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":"16c60cd20096fb43f1cc364c010bc21268b4bf3dc6124a098739ad9e40fd401f","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-08-19T01:50:20Z","title_canon_sha256":"4ce8dc7e220dd29d014bd6a919cb8e27acc67344e20cae4fa9fa8f91bb699cd2"},"schema_version":"1.0","source":{"id":"1308.3910","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3910","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3910v1","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3910","created_at":"2026-05-18T01:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"DQME6ZL4RDV3","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DQME6ZL4RDV3H62W","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DQME6ZL4","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:1222d680d9348bd2997d1a0f0d5039a3c44e0a339a25d670a920314ad2e463b7","target":"graph","created_at":"2026-05-18T01:48:14Z","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":"We present a new approach to find exact solutions for cosmological models. By requiring the existence of a symmetry transformation vector for the equations of motion of the given cosmological model (without using either Lagrangian or Hamiltonian), one can find corresponding Hojman conserved quantities. With the help of these conserved quantities, the analysis of the cosmological model can be simplified. In the case of quintessence scalar-tensor models, we show that the Hojman conserved quantities exist for a wide range of V(\\phi)-potentials and allow to find exact solutions for the cosmic scal","authors_text":"Mahmood Roshan, Salvatore Capozziello","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-08-19T01:50:20Z","title":"Exact cosmological solutions from Hojman conservation quantities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3910","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":"sha256:85ad28c20e5c5f0fd6ee7ab539ff06c84c7b74199930195ec8bc7948cd7bf02a","target":"record","created_at":"2026-05-18T01:48:14Z","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":"16c60cd20096fb43f1cc364c010bc21268b4bf3dc6124a098739ad9e40fd401f","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-08-19T01:50:20Z","title_canon_sha256":"4ce8dc7e220dd29d014bd6a919cb8e27acc67344e20cae4fa9fa8f91bb699cd2"},"schema_version":"1.0","source":{"id":"1308.3910","kind":"arxiv","version":1}},"canonical_sha256":"1c184f657c88ebb3fb56ffb79c6f641e2c65a7c0b281946ad449e005d7da98a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c184f657c88ebb3fb56ffb79c6f641e2c65a7c0b281946ad449e005d7da98a2","first_computed_at":"2026-05-18T01:48:14.175937Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:14.175937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qDQLbTtZoviw5WFEV6FwLc51HFelDq/dOrY+yHGC8S9MXZh6X5L7h+7grV1/PbH5GS0Bz0GL08XhFMaX1nspBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:14.176594Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.3910","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85ad28c20e5c5f0fd6ee7ab539ff06c84c7b74199930195ec8bc7948cd7bf02a","sha256:1222d680d9348bd2997d1a0f0d5039a3c44e0a339a25d670a920314ad2e463b7"],"state_sha256":"a29a974d923eaf01dc698a49bc9eca9ca474f4e4c810b58014d0ff7dce2d3f82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PfZCdZj2hJR71P5ILefUsKnYgOu+1YpHhGY8/3LWGt/lQB2DojPEHLPBi9cJQGF8jvuq5IaTH9Qg6QdyEfrLCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T05:00:07.602485Z","bundle_sha256":"cb2728cc203c20ebd8b84fa497a7a344682185c6aec86b92d6e1352bba25e2eb"}}