{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:YE7VRRKE3SYHQKFAV34734Y4BP","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":"a44ecc94158a7b711167b58368a7a77557e3faaa9d047ac009de5af5d06e371b","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"1995-03-11T19:16:38Z","title_canon_sha256":"efe83a4deec1b07ac4dc9779747eaf9a222f91363e14cf228861bc3d16d66078"},"schema_version":"1.0","source":{"id":"hep-th/9503078","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9503078","created_at":"2026-07-04T15:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9503078v2","created_at":"2026-07-04T15:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9503078","created_at":"2026-07-04T15:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"YE7VRRKE3SYH","created_at":"2026-07-04T15:59:20Z"},{"alias_kind":"pith_short_16","alias_value":"YE7VRRKE3SYHQKFA","created_at":"2026-07-04T15:59:20Z"},{"alias_kind":"pith_short_8","alias_value":"YE7VRRKE","created_at":"2026-07-04T15:59:20Z"}],"graph_snapshots":[{"event_id":"sha256:e6a56aa9842b48feea7064bbe76e59434ee77a5c0db0191be6c57de0f11273f9","target":"graph","created_at":"2026-07-04T15:59:20Z","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/hep-th/9503078/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"It is well-known that principal chiral models and symmetric space models in two-dimensional Minkowski space have an infinite-dimensional algebra of hidden symmetries. Because of the relevance of symmetric space models to duality symmetries in string theory, the hidden symmetries of these models are explored in some detail. The string theory application requires including coupling to gravity, supersymmetrization, and quantum effects. However, as a first step, this paper only considers classical bosonic theories in flat space-time. Even though the algebra of hidden symmetries of principal chiral","authors_text":"John H. Schwarz","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"1995-03-11T19:16:38Z","title":"Classical Symmetries of Some Two-Dimensional Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9503078","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:baa8d89432706f61141e3e33978717142ca4e48edcf8eba53645efbd7f78c4ff","target":"record","created_at":"2026-07-04T15:59:20Z","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":"a44ecc94158a7b711167b58368a7a77557e3faaa9d047ac009de5af5d06e371b","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"1995-03-11T19:16:38Z","title_canon_sha256":"efe83a4deec1b07ac4dc9779747eaf9a222f91363e14cf228861bc3d16d66078"},"schema_version":"1.0","source":{"id":"hep-th/9503078","kind":"arxiv","version":2}},"canonical_sha256":"c13f58c544dcb07828a0aef9fdf31c0bcc79144e60aa6c5a2ae571e917962927","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c13f58c544dcb07828a0aef9fdf31c0bcc79144e60aa6c5a2ae571e917962927","first_computed_at":"2026-07-04T15:59:20.178657Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:59:20.178657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4V3yFW9Pk9wlGhN+T1NiPZszHZKFIDwSWzOtKccqZXBV8zdfFO3soeAHuPPQ4oBI82i4CRp9X8IlJ0t7lvG6BQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:59:20.179024Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/9503078","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:baa8d89432706f61141e3e33978717142ca4e48edcf8eba53645efbd7f78c4ff","sha256:e6a56aa9842b48feea7064bbe76e59434ee77a5c0db0191be6c57de0f11273f9"],"state_sha256":"6f21a9fff3511cd6e6ee955c5a8c96b227edc30309623edaf39138cac5784572"}