{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MZRZRZ7OLH6ZAVPIIQY2TSJRUO","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":"d3904b48dc28e2c0630fa9d23cc8c0a9eae862d6e9b973fba861bd7230afb852","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-01T20:15:21Z","title_canon_sha256":"ca8631a35a4f4a1261004d33a1fb0754c8da13dace3736a284e91646aedb70ac"},"schema_version":"1.0","source":{"id":"1907.01050","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01050","created_at":"2026-07-05T01:38:33Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01050v2","created_at":"2026-07-05T01:38:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01050","created_at":"2026-07-05T01:38:33Z"},{"alias_kind":"pith_short_12","alias_value":"MZRZRZ7OLH6Z","created_at":"2026-07-05T01:38:33Z"},{"alias_kind":"pith_short_16","alias_value":"MZRZRZ7OLH6ZAVPI","created_at":"2026-07-05T01:38:33Z"},{"alias_kind":"pith_short_8","alias_value":"MZRZRZ7O","created_at":"2026-07-05T01:38:33Z"}],"graph_snapshots":[{"event_id":"sha256:4b9894843f5350be1e93cca8aa9905db41c77784115e77189ae4f450e9463411","target":"graph","created_at":"2026-07-05T01:38:33Z","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/1907.01050/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In a recent paper, Nashed and Capozziello presented a new class of charged, spherically symmetric black hole solutions of $f(R)$ gravity with an asymptotic flat or (anti-)de Sitter behavior. These metrics depend on a dimensional parameter $\\alpha$ and are interesting because they cannot reduce to general relativity solutions. In this paper, we present a corrected study of their physical and thermodynamic properties and generalize these solutions to obtain a new set of stationary, axisymmetric black holes in the $f(R)$ scenario. Some of our results show that the entropy is always positive withi","authors_text":"Carlos Conde, Cristian Galvis, Eduard Larra\\~naga","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-01T20:15:21Z","title":"On the properties of a Static and a Stationary Charged Black Hole in $f(R)$ Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01050","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":"sha256:90676a5925226dd9355f5cdac875b66728a5fc65cf98ef5830d91e27dbd63325","target":"record","created_at":"2026-07-05T01:38:33Z","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":"d3904b48dc28e2c0630fa9d23cc8c0a9eae862d6e9b973fba861bd7230afb852","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-01T20:15:21Z","title_canon_sha256":"ca8631a35a4f4a1261004d33a1fb0754c8da13dace3736a284e91646aedb70ac"},"schema_version":"1.0","source":{"id":"1907.01050","kind":"arxiv","version":2}},"canonical_sha256":"666398e7ee59fd9055e84431a9c931a38da42be480e8f54242d4cf4b558e0e1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"666398e7ee59fd9055e84431a9c931a38da42be480e8f54242d4cf4b558e0e1b","first_computed_at":"2026-07-05T01:38:33.069563Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:38:33.069563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lfjbp/4s3M+jGNaWjHJBmn/vOF5LiaHj4HhRbkgTK5P3dydD4CvnIYPSnq2hXoaMeiC6CjI5NOaT05iI2wgSCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:38:33.069961Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.01050","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90676a5925226dd9355f5cdac875b66728a5fc65cf98ef5830d91e27dbd63325","sha256:4b9894843f5350be1e93cca8aa9905db41c77784115e77189ae4f450e9463411"],"state_sha256":"897e4c8e938a681536d4d43923f4116437be615ed8e0d372c39a55b79d1096da"}