{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:R6U5DMRL5DNEH7EHUJPUZDKSIK","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":"ec175baa279b85d0231eda06191eb1ad310eed3d1923f460a0d5fb730d5f469d","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2021-02-11T09:33:55Z","title_canon_sha256":"6c8c58bbb831244e84adb3df669594fa961aa6a370f8ae4c30ce4590b20f3982"},"schema_version":"1.0","source":{"id":"2102.05906","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.05906","created_at":"2026-07-05T02:14:35Z"},{"alias_kind":"arxiv_version","alias_value":"2102.05906v1","created_at":"2026-07-05T02:14:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.05906","created_at":"2026-07-05T02:14:35Z"},{"alias_kind":"pith_short_12","alias_value":"R6U5DMRL5DNE","created_at":"2026-07-05T02:14:35Z"},{"alias_kind":"pith_short_16","alias_value":"R6U5DMRL5DNEH7EH","created_at":"2026-07-05T02:14:35Z"},{"alias_kind":"pith_short_8","alias_value":"R6U5DMRL","created_at":"2026-07-05T02:14:35Z"}],"graph_snapshots":[{"event_id":"sha256:1d600c8e379edda0faba948f0bb00ccd6c68f81ad36d4794ffe7bf48d966b8d9","target":"graph","created_at":"2026-07-05T02:14:35Z","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/2102.05906/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The slowly varying complex envelope of sinusoidal signals can be estimated in real-time using digital downconversion. In this paper, we discuss the requirements on digital downconversion for control applications. Two low-latency downconversion filters are compared with respect to performance and implementation aspects.","authors_text":"Lawrence Doolittle, Olof Troeng","cross_cats":["eess.SP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2021-02-11T09:33:55Z","title":"Low-Latency Digital Downconversion for Control Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.05906","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":"sha256:75e25c17a5ae67adee65ac9fe6711b3ce4455064edc35d7f0c4cbbc1c029b892","target":"record","created_at":"2026-07-05T02:14:35Z","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":"ec175baa279b85d0231eda06191eb1ad310eed3d1923f460a0d5fb730d5f469d","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2021-02-11T09:33:55Z","title_canon_sha256":"6c8c58bbb831244e84adb3df669594fa961aa6a370f8ae4c30ce4590b20f3982"},"schema_version":"1.0","source":{"id":"2102.05906","kind":"arxiv","version":1}},"canonical_sha256":"8fa9d1b22be8da43fc87a25f4c8d5242b4c23e467ad85cb5fb7cffea582d7ad6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fa9d1b22be8da43fc87a25f4c8d5242b4c23e467ad85cb5fb7cffea582d7ad6","first_computed_at":"2026-07-05T02:14:35.628674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:14:35.628674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U9CyTvugIjLwpn+ypWr/oPTOsP/KuXfS3bJ9AyOj1iPb5EIvw2UOUIaRNSV2wJ6Eh7U57etAv+bwuF2AyjbiCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:14:35.629113Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.05906","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75e25c17a5ae67adee65ac9fe6711b3ce4455064edc35d7f0c4cbbc1c029b892","sha256:1d600c8e379edda0faba948f0bb00ccd6c68f81ad36d4794ffe7bf48d966b8d9"],"state_sha256":"ae505786f854327aa874f675f9230d2ccf40a1f16a06401d37d1e47fcf542f4d"}