{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:45BKDEZIT46GBN5TA6X5VIACEF","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":"b92c4262f7a2bda1ba883adad319d5993b7628a3b26d60d4d18210d161623b8e","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-07T02:59:39Z","title_canon_sha256":"4900cd359471aca58a88997026661b2eafcf006fd1636a8f61e8b2b9c31618bf"},"schema_version":"1.0","source":{"id":"1105.1413","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1413","created_at":"2026-05-18T04:22:39Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1413v1","created_at":"2026-05-18T04:22:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1413","created_at":"2026-05-18T04:22:39Z"},{"alias_kind":"pith_short_12","alias_value":"45BKDEZIT46G","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"45BKDEZIT46GBN5T","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"45BKDEZI","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:90768c1c3ac8755db887a2977b8f1da4ca54e92580f48bc48f0a6eb24896299d","target":"graph","created_at":"2026-05-18T04:22:39Z","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 introduce a technique to solve numerically the relativistic Euler's equations in scenarios with spherical symmetry using the standard Smoothed Particles Hydrodynamics method in cartesian coordinates. This implementation allow us to increase the resolution of the simulations in order to obtain accurate results. We test our implementation studying the evolution of a perfect fluid in a blast wave configuration in a fixed space-time . The technique can be easily generalized to axial symmetric problems.","authors_text":"Jos\\'e A. Gonz\\'alez, Juan P. Cruz","cross_cats":["physics.comp-ph","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-07T02:59:39Z","title":"Symmetries without symmetries in Smoothed Particle Hydrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1413","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:d859bb25d08f3d77463fd886ebb87a7348de314c0a2207dc04b6232832423ce2","target":"record","created_at":"2026-05-18T04:22:39Z","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":"b92c4262f7a2bda1ba883adad319d5993b7628a3b26d60d4d18210d161623b8e","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-07T02:59:39Z","title_canon_sha256":"4900cd359471aca58a88997026661b2eafcf006fd1636a8f61e8b2b9c31618bf"},"schema_version":"1.0","source":{"id":"1105.1413","kind":"arxiv","version":1}},"canonical_sha256":"e742a193289f3c60b7b307afdaa0022149ea3ea1326112cf5fd25a4d85b27372","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e742a193289f3c60b7b307afdaa0022149ea3ea1326112cf5fd25a4d85b27372","first_computed_at":"2026-05-18T04:22:39.490349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:22:39.490349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2vze9An+VAPUnQkbT6mbihmr/8H/sxwigx3khL8WTIMrBVr/szp7E9hr5CAHqXW/iDBnTKbDB8a0Di//A1TgAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:22:39.490855Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.1413","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d859bb25d08f3d77463fd886ebb87a7348de314c0a2207dc04b6232832423ce2","sha256:90768c1c3ac8755db887a2977b8f1da4ca54e92580f48bc48f0a6eb24896299d"],"state_sha256":"91b226fcec5a72b0f72d50358b43330c3ed1b34ef0418fdc56121cd70403e4f8"}