{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:C35CGMJMGSS7ZIW6AINWMZ7KHN","short_pith_number":"pith:C35CGMJM","canonical_record":{"source":{"id":"1405.0125","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-01T10:22:14Z","cross_cats_sorted":[],"title_canon_sha256":"b219c7ae201fb11e107bc5f1db275e483887781843cd9045b02f081c17f1ffec","abstract_canon_sha256":"b55895b9678905c1f163e91e2b01c511dce530f4b61049e9d49cf08d59c36d91"},"schema_version":"1.0"},"canonical_sha256":"16fa23312c34a5fca2de021b6667ea3b589202e1e76a3a6bdbbc917b79c5a462","source":{"kind":"arxiv","id":"1405.0125","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0125","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0125v2","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0125","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"pith_short_12","alias_value":"C35CGMJMGSS7","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"C35CGMJMGSS7ZIW6","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"C35CGMJM","created_at":"2026-05-18T12:28:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:C35CGMJMGSS7ZIW6AINWMZ7KHN","target":"record","payload":{"canonical_record":{"source":{"id":"1405.0125","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-01T10:22:14Z","cross_cats_sorted":[],"title_canon_sha256":"b219c7ae201fb11e107bc5f1db275e483887781843cd9045b02f081c17f1ffec","abstract_canon_sha256":"b55895b9678905c1f163e91e2b01c511dce530f4b61049e9d49cf08d59c36d91"},"schema_version":"1.0"},"canonical_sha256":"16fa23312c34a5fca2de021b6667ea3b589202e1e76a3a6bdbbc917b79c5a462","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:42:07.897749Z","signature_b64":"1rSj4n3aT/MP5AU82R19zV4mJsHPmDpM137DSz5R3pPKGA++3c0e0vVEvFR2PqnLeYkANZihziH5E/Pv8AnUAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16fa23312c34a5fca2de021b6667ea3b589202e1e76a3a6bdbbc917b79c5a462","last_reissued_at":"2026-05-18T02:42:07.897229Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:42:07.897229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.0125","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:42:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gxDILWrYMwCNRV3jujlWmJXNEBpa8q/GTA3u8zBjDFv/0u5AyNePlZ/Nl+dgfNTBdNyJQ0PucUNXIoXmZFTWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:08:29.785708Z"},"content_sha256":"220e98501dd0cc2e7d5b0699384ad4b5331f0c86b446059062209ae8f945b355","schema_version":"1.0","event_id":"sha256:220e98501dd0cc2e7d5b0699384ad4b5331f0c86b446059062209ae8f945b355"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:C35CGMJMGSS7ZIW6AINWMZ7KHN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Implicit yield function formulation for granular and rock-like materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Piccolroaz, D. Bigoni, R. Denzer, S. Stupkiewicz","submitted_at":"2014-05-01T10:22:14Z","abstract_excerpt":"The constitutive modelling of granular, porous and quasi-brittle materials is based on yield (or damage) functions, which may exhibit features (for instance, lack of convexity, or branches where the values go to infinity, or false elastic domains) preventing the use of efficient return-mapping integration schemes. This problem is solved by proposing a general construction strategy to define an implicitly defined convex yield function starting from any convex yield surface. Based on this implicit definition of the yield function, a return-mapping integration scheme is implemented and tested for"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0125","kind":"arxiv","version":2},"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":"2026-05-18T02:42:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U+nW4Sz+cFRI4QkQ84fP73bvzS5EytTgTdPM+uN0itLotzlAWStfsqjgffXY5rfwBFpphQWRhX+fSnRJZ4JXDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:08:29.786419Z"},"content_sha256":"b97fe7f7f63f91efbab860e99ebe1a8d4d54d514f362318884355ad42d09ac0d","schema_version":"1.0","event_id":"sha256:b97fe7f7f63f91efbab860e99ebe1a8d4d54d514f362318884355ad42d09ac0d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/bundle.json","state_url":"https://pith.science/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/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":"2026-06-06T19:08:29Z","links":{"resolver":"https://pith.science/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN","bundle":"https://pith.science/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/bundle.json","state":"https://pith.science/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C35CGMJMGSS7ZIW6AINWMZ7KHN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:C35CGMJMGSS7ZIW6AINWMZ7KHN","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":"b55895b9678905c1f163e91e2b01c511dce530f4b61049e9d49cf08d59c36d91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-01T10:22:14Z","title_canon_sha256":"b219c7ae201fb11e107bc5f1db275e483887781843cd9045b02f081c17f1ffec"},"schema_version":"1.0","source":{"id":"1405.0125","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0125","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0125v2","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0125","created_at":"2026-05-18T02:42:07Z"},{"alias_kind":"pith_short_12","alias_value":"C35CGMJMGSS7","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"C35CGMJMGSS7ZIW6","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"C35CGMJM","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:b97fe7f7f63f91efbab860e99ebe1a8d4d54d514f362318884355ad42d09ac0d","target":"graph","created_at":"2026-05-18T02:42:07Z","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":"The constitutive modelling of granular, porous and quasi-brittle materials is based on yield (or damage) functions, which may exhibit features (for instance, lack of convexity, or branches where the values go to infinity, or false elastic domains) preventing the use of efficient return-mapping integration schemes. This problem is solved by proposing a general construction strategy to define an implicitly defined convex yield function starting from any convex yield surface. Based on this implicit definition of the yield function, a return-mapping integration scheme is implemented and tested for","authors_text":"A. Piccolroaz, D. Bigoni, R. Denzer, S. Stupkiewicz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-01T10:22:14Z","title":"Implicit yield function formulation for granular and rock-like materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0125","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":"sha256:220e98501dd0cc2e7d5b0699384ad4b5331f0c86b446059062209ae8f945b355","target":"record","created_at":"2026-05-18T02:42:07Z","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":"b55895b9678905c1f163e91e2b01c511dce530f4b61049e9d49cf08d59c36d91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-01T10:22:14Z","title_canon_sha256":"b219c7ae201fb11e107bc5f1db275e483887781843cd9045b02f081c17f1ffec"},"schema_version":"1.0","source":{"id":"1405.0125","kind":"arxiv","version":2}},"canonical_sha256":"16fa23312c34a5fca2de021b6667ea3b589202e1e76a3a6bdbbc917b79c5a462","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16fa23312c34a5fca2de021b6667ea3b589202e1e76a3a6bdbbc917b79c5a462","first_computed_at":"2026-05-18T02:42:07.897229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:07.897229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1rSj4n3aT/MP5AU82R19zV4mJsHPmDpM137DSz5R3pPKGA++3c0e0vVEvFR2PqnLeYkANZihziH5E/Pv8AnUAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:07.897749Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.0125","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:220e98501dd0cc2e7d5b0699384ad4b5331f0c86b446059062209ae8f945b355","sha256:b97fe7f7f63f91efbab860e99ebe1a8d4d54d514f362318884355ad42d09ac0d"],"state_sha256":"7dd0451e5ba61901aea87e1270b6f30c4022e52da4694a53e49897a99ec9eb25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I1wzLfZcF6FYytMe31vLjPQL66+yyQH4OC7eDqmTXlV7z7JeXExOabdGF1v1wjJOdgi2VdQ2fKgssWrBgtsKDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T19:08:29.790042Z","bundle_sha256":"94f101cb77426829612aa6c3cf3ed608f224248ae160a266991e603d515c7814"}}