{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UQSWGO3UHX3TLQLAXWDOWSVYQO","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":"d957a07a7329388ca7e74181440914324b99cb6227d8ce7cef3cb9621aa871c1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2026-05-26T13:29:19Z","title_canon_sha256":"8ed692999b0460efc32c0379261933ae5b6ebe7ad013551df722190a408e417a"},"schema_version":"1.0","source":{"id":"2605.27011","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.27011","created_at":"2026-05-27T01:06:24Z"},{"alias_kind":"arxiv_version","alias_value":"2605.27011v1","created_at":"2026-05-27T01:06:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27011","created_at":"2026-05-27T01:06:24Z"},{"alias_kind":"pith_short_12","alias_value":"UQSWGO3UHX3T","created_at":"2026-05-27T01:06:24Z"},{"alias_kind":"pith_short_16","alias_value":"UQSWGO3UHX3TLQLA","created_at":"2026-05-27T01:06:24Z"},{"alias_kind":"pith_short_8","alias_value":"UQSWGO3U","created_at":"2026-05-27T01:06:24Z"}],"graph_snapshots":[{"event_id":"sha256:61ce26b797322e08d554feebebfce295b9d7f56accdce65f674a3966584d401c","target":"graph","created_at":"2026-05-27T01:06:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.27011/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A key challenge in material theory is the formulation of models that satisfy all common mechanical constitutive conditions while retaining sufficient flexibility. In this context, several important modeling aspects remain unresolved for polyconvex anisotropic hyperelasticity. We address some of these challenges and apply our results for physics-augmented neural network (PANN) constitutive modeling. The main contributions of this paper are as follows: (1) We propose a new polyconvex PANN constitutive model for anisotropic hyperelasticity based on triclinic invariants and group symmetrization. F","authors_text":"Dominik K. Klein, Jes\\'us Mart\\'inez-Frutos, Karl A. Kalina, Markus K\\\"astner, Oliver Weeger, Rogelio Ortigosa","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2026-05-26T13:29:19Z","title":"Advances in polyconvex anisotropic hyperelasticity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27011","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":"sha256:33a465f0e53822d6581dcf71fbdfa2eb4dd2a515c3280e0929d10c33652f731b","target":"record","created_at":"2026-05-27T01:06:24Z","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":"d957a07a7329388ca7e74181440914324b99cb6227d8ce7cef3cb9621aa871c1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2026-05-26T13:29:19Z","title_canon_sha256":"8ed692999b0460efc32c0379261933ae5b6ebe7ad013551df722190a408e417a"},"schema_version":"1.0","source":{"id":"2605.27011","kind":"arxiv","version":1}},"canonical_sha256":"a425633b743df735c160bd86eb4ab8838a23691a09b87c78243dbcfd31fbd847","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a425633b743df735c160bd86eb4ab8838a23691a09b87c78243dbcfd31fbd847","first_computed_at":"2026-05-27T01:06:24.120560Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:06:24.120560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YnfxZejmqRuUou6YZ0e2TRWNzkec6WuDqpq9aGONhZil6TLPZpArbKK0iDaLcNZ3OjYtfQxav1jPHjEH/jUjDw==","signature_status":"signed_v1","signed_at":"2026-05-27T01:06:24.121102Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.27011","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33a465f0e53822d6581dcf71fbdfa2eb4dd2a515c3280e0929d10c33652f731b","sha256:61ce26b797322e08d554feebebfce295b9d7f56accdce65f674a3966584d401c"],"state_sha256":"0261e9097d4ff630cff987cd402f957ed3be447a0b3bb89a3ade6607c561bc32"}