{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:IJRZFRTNCMHVGB5RHZNEC3Q34G","short_pith_number":"pith:IJRZFRTN","canonical_record":{"source":{"id":"1807.06426","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-07-17T13:42:30Z","cross_cats_sorted":[],"title_canon_sha256":"aa4d69f68c9687022785d2e307b201ba449984b09f3685abbf6d00c3c0c53415","abstract_canon_sha256":"436e2ba99caa1fbe90648f692c6b0ed4560f4f85bed60aa791f9c04cedcb64ad"},"schema_version":"1.0"},"canonical_sha256":"426392c66d130f5307b13e5a416e1be1bf1ec43cdeb8418c1db7c8ed2625dd24","source":{"kind":"arxiv","id":"1807.06426","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.06426","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"arxiv_version","alias_value":"1807.06426v4","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.06426","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"pith_short_12","alias_value":"IJRZFRTNCMHV","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IJRZFRTNCMHVGB5R","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IJRZFRTN","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:IJRZFRTNCMHVGB5RHZNEC3Q34G","target":"record","payload":{"canonical_record":{"source":{"id":"1807.06426","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-07-17T13:42:30Z","cross_cats_sorted":[],"title_canon_sha256":"aa4d69f68c9687022785d2e307b201ba449984b09f3685abbf6d00c3c0c53415","abstract_canon_sha256":"436e2ba99caa1fbe90648f692c6b0ed4560f4f85bed60aa791f9c04cedcb64ad"},"schema_version":"1.0"},"canonical_sha256":"426392c66d130f5307b13e5a416e1be1bf1ec43cdeb8418c1db7c8ed2625dd24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:32.283421Z","signature_b64":"6z3J2WiACYV6u6J324l2/sZ5Q52m+SdWvOIKVOyZ7KQRI4DsrHpESp+7DZLPhHwr+f8sXVGh/MDax8tTgkBFCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"426392c66d130f5307b13e5a416e1be1bf1ec43cdeb8418c1db7c8ed2625dd24","last_reissued_at":"2026-05-17T23:44:32.282737Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:32.282737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.06426","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:44:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uum60ZYjMiBVnPTDq0ZX0CpWy+ur20w14AgeCOz1AAO4RlH9CVwE7D4dPQoiTGxOxUv+BRKo92OJXcQN+kclDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:11:34.677583Z"},"content_sha256":"2dc16a1108d7501d804adaa6ce2e6bdfaa2d168492a90c6666ef5a883bf39b72","schema_version":"1.0","event_id":"sha256:2dc16a1108d7501d804adaa6ce2e6bdfaa2d168492a90c6666ef5a883bf39b72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:IJRZFRTNCMHVGB5RHZNEC3Q34G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Some observations on variational elasticity and its application to plates and membranes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"J. A. Hanna","submitted_at":"2018-07-17T13:42:30Z","abstract_excerpt":"Energies and equilibrium equations for thin elastic plates are discussed, with emphasis on several issues pertinent to recent approaches in soft condensed matter. Consequences of choice of basis, choice of invariant strain measures, and of approximating material energies as purely geometric in nature, are detailed. Ambiguities in the definitions of energies based on small-strain expansions, and in a typical informal process of dimensional reduction, are noted. A simple example serves to demonstrate that a commonly used bending energy has undesirable features, and it is suggested that a new the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.06426","kind":"arxiv","version":4},"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":"2026-05-17T23:44:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3sXrZV7lyxyBQRcRuInqrpPXmWD7QWpOBKuA6OK4CBjf4Hws8v+1FuWCSskGcKHlIHS+nwHrGdGFdyKgsHUpCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:11:34.677926Z"},"content_sha256":"9b4239dbdc1f032d15ebf513a85a2d8aa788adc8c5974ac9415041d3a1fb32ab","schema_version":"1.0","event_id":"sha256:9b4239dbdc1f032d15ebf513a85a2d8aa788adc8c5974ac9415041d3a1fb32ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/bundle.json","state_url":"https://pith.science/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/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":"2026-06-02T19:11:34Z","links":{"resolver":"https://pith.science/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G","bundle":"https://pith.science/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/bundle.json","state":"https://pith.science/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IJRZFRTNCMHVGB5RHZNEC3Q34G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:IJRZFRTNCMHVGB5RHZNEC3Q34G","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":"436e2ba99caa1fbe90648f692c6b0ed4560f4f85bed60aa791f9c04cedcb64ad","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-07-17T13:42:30Z","title_canon_sha256":"aa4d69f68c9687022785d2e307b201ba449984b09f3685abbf6d00c3c0c53415"},"schema_version":"1.0","source":{"id":"1807.06426","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.06426","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"arxiv_version","alias_value":"1807.06426v4","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.06426","created_at":"2026-05-17T23:44:32Z"},{"alias_kind":"pith_short_12","alias_value":"IJRZFRTNCMHV","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IJRZFRTNCMHVGB5R","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IJRZFRTN","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:9b4239dbdc1f032d15ebf513a85a2d8aa788adc8c5974ac9415041d3a1fb32ab","target":"graph","created_at":"2026-05-17T23:44:32Z","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":"Energies and equilibrium equations for thin elastic plates are discussed, with emphasis on several issues pertinent to recent approaches in soft condensed matter. Consequences of choice of basis, choice of invariant strain measures, and of approximating material energies as purely geometric in nature, are detailed. Ambiguities in the definitions of energies based on small-strain expansions, and in a typical informal process of dimensional reduction, are noted. A simple example serves to demonstrate that a commonly used bending energy has undesirable features, and it is suggested that a new the","authors_text":"J. A. Hanna","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-07-17T13:42:30Z","title":"Some observations on variational elasticity and its application to plates and membranes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.06426","kind":"arxiv","version":4},"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":"sha256:2dc16a1108d7501d804adaa6ce2e6bdfaa2d168492a90c6666ef5a883bf39b72","target":"record","created_at":"2026-05-17T23:44:32Z","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":"436e2ba99caa1fbe90648f692c6b0ed4560f4f85bed60aa791f9c04cedcb64ad","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-07-17T13:42:30Z","title_canon_sha256":"aa4d69f68c9687022785d2e307b201ba449984b09f3685abbf6d00c3c0c53415"},"schema_version":"1.0","source":{"id":"1807.06426","kind":"arxiv","version":4}},"canonical_sha256":"426392c66d130f5307b13e5a416e1be1bf1ec43cdeb8418c1db7c8ed2625dd24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"426392c66d130f5307b13e5a416e1be1bf1ec43cdeb8418c1db7c8ed2625dd24","first_computed_at":"2026-05-17T23:44:32.282737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:32.282737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6z3J2WiACYV6u6J324l2/sZ5Q52m+SdWvOIKVOyZ7KQRI4DsrHpESp+7DZLPhHwr+f8sXVGh/MDax8tTgkBFCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:32.283421Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.06426","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2dc16a1108d7501d804adaa6ce2e6bdfaa2d168492a90c6666ef5a883bf39b72","sha256:9b4239dbdc1f032d15ebf513a85a2d8aa788adc8c5974ac9415041d3a1fb32ab"],"state_sha256":"c6cfd11682c55a774de73e81e1d51dee1a10120caab3041e8169ec3ce38dfedb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Fll9GT8NL5hxfTWrmIDHUXecZysLyPaq3U2WNMlw4Q1iIfZWLDnlTY7DNqPgNexzdfpCEL3E91Ye11rRCsVCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T19:11:34.680018Z","bundle_sha256":"a1da2c1b41f48f81cdaf03f386e48d39962abfe22e406e22c5dee04376adbc3c"}}