{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:2D5TNPI6FJ5A3LOETVI5CDNLCS","short_pith_number":"pith:2D5TNPI6","schema_version":"1.0","canonical_sha256":"d0fb36bd1e2a7a0dadc49d51d10dab1482eac5f3209b60b717e943d315c505d3","source":{"kind":"arxiv","id":"1506.04178","version":3},"attestation_state":"computed","paper":{"title":"Robust preparation noncontextuality inequalities in the simplest scenario","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Matthew F. Pusey","submitted_at":"2015-06-12T20:43:38Z","abstract_excerpt":"Contextuality is the leading notion of nonclassicality for a single system. However, an experimental demonstration requires finding procedures that are operationally equivalent, which might seem impossible to achieve exactly. Here I focus on the simplest non-trivial case, four preparations and two tomographically complete binary measurements. Exploiting a subtle connection to the CHSH scenario gives eight non-linear inequalities which are together necessary and sufficient for the experimental statistics to admit a preparation noncontextual model in such a scenario. No fixed operational equival"},"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":"1506.04178","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-12T20:43:38Z","cross_cats_sorted":[],"title_canon_sha256":"31ebea09defcb08da1f0b0aa8f79f430cf76d393ccbb85f28e16de0c96cfac51","abstract_canon_sha256":"34d2a00f7c292318327360140ca698ecf0c187a57f0f644b4ea803d40693a736"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:46.641720Z","signature_b64":"VGaNvmMfXMPGXnUoTHly5AwU4FBqG3qzBjRD/wdT6FErCN3zJNtXRY1I5b3qZQAceeEE54z8QgThDgQiQ89pCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0fb36bd1e2a7a0dadc49d51d10dab1482eac5f3209b60b717e943d315c505d3","last_reissued_at":"2026-05-18T00:08:46.641137Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:46.641137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Robust preparation noncontextuality inequalities in the simplest scenario","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Matthew F. Pusey","submitted_at":"2015-06-12T20:43:38Z","abstract_excerpt":"Contextuality is the leading notion of nonclassicality for a single system. However, an experimental demonstration requires finding procedures that are operationally equivalent, which might seem impossible to achieve exactly. Here I focus on the simplest non-trivial case, four preparations and two tomographically complete binary measurements. Exploiting a subtle connection to the CHSH scenario gives eight non-linear inequalities which are together necessary and sufficient for the experimental statistics to admit a preparation noncontextual model in such a scenario. No fixed operational equival"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.04178","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":""},"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":"1506.04178","created_at":"2026-05-18T00:08:46.641228+00:00"},{"alias_kind":"arxiv_version","alias_value":"1506.04178v3","created_at":"2026-05-18T00:08:46.641228+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.04178","created_at":"2026-05-18T00:08:46.641228+00:00"},{"alias_kind":"pith_short_12","alias_value":"2D5TNPI6FJ5A","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_16","alias_value":"2D5TNPI6FJ5A3LOE","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_8","alias_value":"2D5TNPI6","created_at":"2026-05-18T12:28:59.999130+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/2D5TNPI6FJ5A3LOETVI5CDNLCS","json":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS.json","graph_json":"https://pith.science/api/pith-number/2D5TNPI6FJ5A3LOETVI5CDNLCS/graph.json","events_json":"https://pith.science/api/pith-number/2D5TNPI6FJ5A3LOETVI5CDNLCS/events.json","paper":"https://pith.science/paper/2D5TNPI6"},"agent_actions":{"view_html":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS","download_json":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS.json","view_paper":"https://pith.science/paper/2D5TNPI6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1506.04178&json=true","fetch_graph":"https://pith.science/api/pith-number/2D5TNPI6FJ5A3LOETVI5CDNLCS/graph.json","fetch_events":"https://pith.science/api/pith-number/2D5TNPI6FJ5A3LOETVI5CDNLCS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS/action/storage_attestation","attest_author":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS/action/author_attestation","sign_citation":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS/action/citation_signature","submit_replication":"https://pith.science/pith/2D5TNPI6FJ5A3LOETVI5CDNLCS/action/replication_record"}},"created_at":"2026-05-18T00:08:46.641228+00:00","updated_at":"2026-05-18T00:08:46.641228+00:00"}