{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:S76ZAEE6WFEPDTO5E2PAAQY7WZ","short_pith_number":"pith:S76ZAEE6","schema_version":"1.0","canonical_sha256":"97fd90109eb148f1cddd269e00431fb6680914686e9c9e223068f9b34f2bd137","source":{"kind":"arxiv","id":"2112.04521","version":3},"attestation_state":"computed","paper":{"title":"Accessible fragments of generalized probabilistic theories, cone equivalence, and applications to witnessing nonclassicality","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ana Bel\\'en Sainz, David Schmid, Elie Wolfe, John H. Selby, Ravi Kunjwal, Robert W. Spekkens","submitted_at":"2021-12-08T19:00:23Z","abstract_excerpt":"The formalism of generalized probabilistic theories (GPTs) was originally developed as a way to characterize the landscape of conceivable physical theories. Thus, the GPT describing a given physical theory necessarily includes all physically possible processes. We here consider the question of how to provide a GPT-like characterization of a particular experimental setup within a given physical theory. We show that the resulting characterization is not generally a GPT in and of itself-rather, it is described by a more general mathematical object that we introduce and term an accessible GPT frag"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2112.04521","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-08T19:00:23Z","cross_cats_sorted":[],"title_canon_sha256":"457d998807f9693d28929f07cac5fc1dec9be156fe4d89ac36abec061d36595b","abstract_canon_sha256":"5a7ebf72e6c7d5805b476ae50fecade7b7eee6d67d37db3169cb403a680c31de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:04:10.530534Z","signature_b64":"Y053Az0rd/Lci3+XGI36z3DNro10Us3SEU3WzhlFlw57rCzV5NcqwtNqBDLq9Xt8rTmYwiN9SI/PNnLrSKZXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97fd90109eb148f1cddd269e00431fb6680914686e9c9e223068f9b34f2bd137","last_reissued_at":"2026-07-05T08:04:10.530071Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:04:10.530071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Accessible fragments of generalized probabilistic theories, cone equivalence, and applications to witnessing nonclassicality","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ana Bel\\'en Sainz, David Schmid, Elie Wolfe, John H. Selby, Ravi Kunjwal, Robert W. Spekkens","submitted_at":"2021-12-08T19:00:23Z","abstract_excerpt":"The formalism of generalized probabilistic theories (GPTs) was originally developed as a way to characterize the landscape of conceivable physical theories. Thus, the GPT describing a given physical theory necessarily includes all physically possible processes. We here consider the question of how to provide a GPT-like characterization of a particular experimental setup within a given physical theory. We show that the resulting characterization is not generally a GPT in and of itself-rather, it is described by a more general mathematical object that we introduce and term an accessible GPT frag"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04521","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.04521/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2112.04521","created_at":"2026-07-05T08:04:10.530128+00:00"},{"alias_kind":"arxiv_version","alias_value":"2112.04521v3","created_at":"2026-07-05T08:04:10.530128+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04521","created_at":"2026-07-05T08:04:10.530128+00:00"},{"alias_kind":"pith_short_12","alias_value":"S76ZAEE6WFEP","created_at":"2026-07-05T08:04:10.530128+00:00"},{"alias_kind":"pith_short_16","alias_value":"S76ZAEE6WFEPDTO5","created_at":"2026-07-05T08:04:10.530128+00:00"},{"alias_kind":"pith_short_8","alias_value":"S76ZAEE6","created_at":"2026-07-05T08:04:10.530128+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ","json":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ.json","graph_json":"https://pith.science/api/pith-number/S76ZAEE6WFEPDTO5E2PAAQY7WZ/graph.json","events_json":"https://pith.science/api/pith-number/S76ZAEE6WFEPDTO5E2PAAQY7WZ/events.json","paper":"https://pith.science/paper/S76ZAEE6"},"agent_actions":{"view_html":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ","download_json":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ.json","view_paper":"https://pith.science/paper/S76ZAEE6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2112.04521&json=true","fetch_graph":"https://pith.science/api/pith-number/S76ZAEE6WFEPDTO5E2PAAQY7WZ/graph.json","fetch_events":"https://pith.science/api/pith-number/S76ZAEE6WFEPDTO5E2PAAQY7WZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ/action/storage_attestation","attest_author":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ/action/author_attestation","sign_citation":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ/action/citation_signature","submit_replication":"https://pith.science/pith/S76ZAEE6WFEPDTO5E2PAAQY7WZ/action/replication_record"}},"created_at":"2026-07-05T08:04:10.530128+00:00","updated_at":"2026-07-05T08:04:10.530128+00:00"}