{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2VJ3VM3BMIKCQ5UU73B5WYNURM","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":"a738eccb1d19078181fb56bed06d3db70c1a4764ae8330a18bdc5cef6b85a83c","cross_cats_sorted":["cs.LO","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2014-02-20T23:35:58Z","title_canon_sha256":"fff45732a844cdf2ba556ebe0c4452fff77d8a4704c4b4d5bc71aeea2cb78a48"},"schema_version":"1.0","source":{"id":"1402.5172","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.5172","created_at":"2026-05-18T02:58:22Z"},{"alias_kind":"arxiv_version","alias_value":"1402.5172v1","created_at":"2026-05-18T02:58:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.5172","created_at":"2026-05-18T02:58:22Z"},{"alias_kind":"pith_short_12","alias_value":"2VJ3VM3BMIKC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2VJ3VM3BMIKCQ5UU","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2VJ3VM3B","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:6f19e156e776816adde7522b28bb592981ec4c78c1f9b3a4fd75efc7c4e6062d","target":"graph","created_at":"2026-05-18T02:58:22Z","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":"We extract a novel quantum programming paradigm - superposition of programs - from the design idea of a popular class of quantum algorithms, namely quantum walk-based algorithms. The generality of this paradigm is guaranteed by the universality of quantum walks as a computational model. A new quantum programming language QGCL is then proposed to support the paradigm of superposition of programs. This language can be seen as a quantum extension of Dijkstra's GCL (Guarded Command Language). Surprisingly, alternation in GCL splits into two different notions in the quantum setting: classical alter","authors_text":"Mingsheng Ying, Nengkun Yu, Yuan Feng","cross_cats":["cs.LO","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2014-02-20T23:35:58Z","title":"Alternation in Quantum Programming: From Superposition of Data to Superposition of Programs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.5172","kind":"arxiv","version":1},"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:e5635a3687a74e15e590c3d0c980b104dd15cfcdd4be80cc52d83715052bdf3e","target":"record","created_at":"2026-05-18T02:58:22Z","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":"a738eccb1d19078181fb56bed06d3db70c1a4764ae8330a18bdc5cef6b85a83c","cross_cats_sorted":["cs.LO","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2014-02-20T23:35:58Z","title_canon_sha256":"fff45732a844cdf2ba556ebe0c4452fff77d8a4704c4b4d5bc71aeea2cb78a48"},"schema_version":"1.0","source":{"id":"1402.5172","kind":"arxiv","version":1}},"canonical_sha256":"d553bab3616214287694fec3db61b48b2bb7e62c801762d7d700eb389a41fa62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d553bab3616214287694fec3db61b48b2bb7e62c801762d7d700eb389a41fa62","first_computed_at":"2026-05-18T02:58:22.925860Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:58:22.925860Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WSBJX30upCxIEiyUafwOqRrnVhqyaWslDbjPQoRQosKgU0NmRYSwjtvQq7FWic1fuziZ1GxcnZnoR+k3omu2Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:58:22.926484Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.5172","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5635a3687a74e15e590c3d0c980b104dd15cfcdd4be80cc52d83715052bdf3e","sha256:6f19e156e776816adde7522b28bb592981ec4c78c1f9b3a4fd75efc7c4e6062d"],"state_sha256":"3b42de2bb517919a3d4b4cf697e5fcff95bbb6af2296787cea77ff90333ae131"}