{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:YP4K2LXAFDIJHF3PL4CI6JTD5E","short_pith_number":"pith:YP4K2LXA","schema_version":"1.0","canonical_sha256":"c3f8ad2ee028d093976f5f048f2663e929544528fa58e31544f59052f094369b","source":{"kind":"arxiv","id":"1204.5345","version":1},"attestation_state":"computed","paper":{"title":"Time-dependent wave selection for information processing in excitable media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"nlin.PS","authors_text":"Andrew Adamatzky, Ben De Lacy Costello, Ishrat Jahan, William M. Stevens","submitted_at":"2012-04-24T11:46:53Z","abstract_excerpt":"We demonstrate an improved technique for implementing logic circuits in light-sensitive chemical excitable media. The technique makes use of the constant-speed propagation of waves along defined channels in an excitable medium based on the Belousov-Zhabotinsky reaction, along with the mutual annihilation of colliding waves. What distinguishes this work from previous work in this area is that regions where channels meet at a junction can periodically alternate between permitting the propagation of waves and blocking them. These valve-like areas are used to select waves based on the length of ti"},"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":"1204.5345","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.PS","submitted_at":"2012-04-24T11:46:53Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"983a7ba49395635f883e609b065d9760f6207359a6f4790626b40a5d366a73de","abstract_canon_sha256":"6f6e2ca8f78f1e8cdc1789bc0614fa1b18381cf4f7dbb2d8a63478fa25cba4a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:49:32.534475Z","signature_b64":"JS817WzPwfVB7ppwm6N/paFCZkIbz80z1cK2Rl/6bE8+q6FmAC5eNGvzUFg9wd9+j1pTbjJ8lO6Bn7GDIMDeAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3f8ad2ee028d093976f5f048f2663e929544528fa58e31544f59052f094369b","last_reissued_at":"2026-05-18T03:49:32.533516Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:49:32.533516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Time-dependent wave selection for information processing in excitable media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"nlin.PS","authors_text":"Andrew Adamatzky, Ben De Lacy Costello, Ishrat Jahan, William M. Stevens","submitted_at":"2012-04-24T11:46:53Z","abstract_excerpt":"We demonstrate an improved technique for implementing logic circuits in light-sensitive chemical excitable media. The technique makes use of the constant-speed propagation of waves along defined channels in an excitable medium based on the Belousov-Zhabotinsky reaction, along with the mutual annihilation of colliding waves. What distinguishes this work from previous work in this area is that regions where channels meet at a junction can periodically alternate between permitting the propagation of waves and blocking them. These valve-like areas are used to select waves based on the length of ti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5345","kind":"arxiv","version":1},"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":"1204.5345","created_at":"2026-05-18T03:49:32.533687+00:00"},{"alias_kind":"arxiv_version","alias_value":"1204.5345v1","created_at":"2026-05-18T03:49:32.533687+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5345","created_at":"2026-05-18T03:49:32.533687+00:00"},{"alias_kind":"pith_short_12","alias_value":"YP4K2LXAFDIJ","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_16","alias_value":"YP4K2LXAFDIJHF3P","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_8","alias_value":"YP4K2LXA","created_at":"2026-05-18T12:27:27.928770+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/YP4K2LXAFDIJHF3PL4CI6JTD5E","json":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E.json","graph_json":"https://pith.science/api/pith-number/YP4K2LXAFDIJHF3PL4CI6JTD5E/graph.json","events_json":"https://pith.science/api/pith-number/YP4K2LXAFDIJHF3PL4CI6JTD5E/events.json","paper":"https://pith.science/paper/YP4K2LXA"},"agent_actions":{"view_html":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E","download_json":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E.json","view_paper":"https://pith.science/paper/YP4K2LXA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1204.5345&json=true","fetch_graph":"https://pith.science/api/pith-number/YP4K2LXAFDIJHF3PL4CI6JTD5E/graph.json","fetch_events":"https://pith.science/api/pith-number/YP4K2LXAFDIJHF3PL4CI6JTD5E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E/action/storage_attestation","attest_author":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E/action/author_attestation","sign_citation":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E/action/citation_signature","submit_replication":"https://pith.science/pith/YP4K2LXAFDIJHF3PL4CI6JTD5E/action/replication_record"}},"created_at":"2026-05-18T03:49:32.533687+00:00","updated_at":"2026-05-18T03:49:32.533687+00:00"}