{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:4R54EWDUVPCLCWYVQGMUF5QU4K","short_pith_number":"pith:4R54EWDU","canonical_record":{"source":{"id":"1901.01140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-12-31T09:29:01Z","cross_cats_sorted":["cs.NE"],"title_canon_sha256":"9676297de6f1c18d0011cd844b5a52aa835d62126f1283e3c4a79f3b79749ffb","abstract_canon_sha256":"06fd5a9903c68a882d88811dbc18a2d685d3ca6d962416628df4aef57871058c"},"schema_version":"1.0"},"canonical_sha256":"e47bc25874abc4b15b15819942f614e2a401bb78c0bf13d33a692e74d2ab4a52","source":{"kind":"arxiv","id":"1901.01140","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01140","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01140v1","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01140","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"pith_short_12","alias_value":"4R54EWDUVPCL","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4R54EWDUVPCLCWYV","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4R54EWDU","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:4R54EWDUVPCLCWYVQGMUF5QU4K","target":"record","payload":{"canonical_record":{"source":{"id":"1901.01140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-12-31T09:29:01Z","cross_cats_sorted":["cs.NE"],"title_canon_sha256":"9676297de6f1c18d0011cd844b5a52aa835d62126f1283e3c4a79f3b79749ffb","abstract_canon_sha256":"06fd5a9903c68a882d88811dbc18a2d685d3ca6d962416628df4aef57871058c"},"schema_version":"1.0"},"canonical_sha256":"e47bc25874abc4b15b15819942f614e2a401bb78c0bf13d33a692e74d2ab4a52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:56.966183Z","signature_b64":"7Ot1pqohksu3xClY/dnTSlMvPhJ7yxjFAofL/iJrp3yxNqc6282Tr91UOpEKLhu6Nkfmnvnanx7ak7fayKr2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e47bc25874abc4b15b15819942f614e2a401bb78c0bf13d33a692e74d2ab4a52","last_reissued_at":"2026-05-17T23:56:56.965727Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:56.965727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.01140","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"limfJjS6kMNFe3s0qVU04XMPzZWORWSfepnBiNDpDR7+kn/j4w6ab/bHkPJRYxG/d3ADoK3APNyz0I+PsNkoBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:26:02.363432Z"},"content_sha256":"76b4f8502a4bf77e346816d3f887412a168d4c978e977c2b293b4d53c064fc17","schema_version":"1.0","event_id":"sha256:76b4f8502a4bf77e346816d3f887412a168d4c978e977c2b293b4d53c064fc17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:4R54EWDUVPCLCWYVQGMUF5QU4K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theory and Algorithms for Pulse Signal Processing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NE"],"primary_cat":"eess.SP","authors_text":"Gabriel Nallathambi, Jose C. Principe","submitted_at":"2018-12-31T09:29:01Z","abstract_excerpt":"The integrate and fire converter transforms an analog signal into train of biphasic pulses. The pulse train has information encoded in the timing and polarity of pulses. While it has been shown that any finite bandwidth analog signal can be reconstructed from these pulse trains with an error as small as desired, there is a need for fundamental signal processing techniques to operate directly on pulse trains without signal reconstruction. In this paper, the feasibility of performing online the signal processing operations of addition, multiplication, and convolution of analog signals using thei"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01140","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FUZhuBNTR5cFjGIMJCgXNf3Dsjhqp3qbTXQqqMoDMvM62gLiETMRkNr+R+Mv6LzGoSlP7AAAol8LCBBoRdWXCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:26:02.363897Z"},"content_sha256":"a5c1b605c3665a4788f360e879aaf6ad4d22114c6af205f612074431517c0aa7","schema_version":"1.0","event_id":"sha256:a5c1b605c3665a4788f360e879aaf6ad4d22114c6af205f612074431517c0aa7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/bundle.json","state_url":"https://pith.science/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-04T12:26:02Z","links":{"resolver":"https://pith.science/pith/4R54EWDUVPCLCWYVQGMUF5QU4K","bundle":"https://pith.science/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/bundle.json","state":"https://pith.science/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4R54EWDUVPCLCWYVQGMUF5QU4K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4R54EWDUVPCLCWYVQGMUF5QU4K","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":"06fd5a9903c68a882d88811dbc18a2d685d3ca6d962416628df4aef57871058c","cross_cats_sorted":["cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-12-31T09:29:01Z","title_canon_sha256":"9676297de6f1c18d0011cd844b5a52aa835d62126f1283e3c4a79f3b79749ffb"},"schema_version":"1.0","source":{"id":"1901.01140","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01140","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01140v1","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01140","created_at":"2026-05-17T23:56:56Z"},{"alias_kind":"pith_short_12","alias_value":"4R54EWDUVPCL","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4R54EWDUVPCLCWYV","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4R54EWDU","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:a5c1b605c3665a4788f360e879aaf6ad4d22114c6af205f612074431517c0aa7","target":"graph","created_at":"2026-05-17T23:56:56Z","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":"The integrate and fire converter transforms an analog signal into train of biphasic pulses. The pulse train has information encoded in the timing and polarity of pulses. While it has been shown that any finite bandwidth analog signal can be reconstructed from these pulse trains with an error as small as desired, there is a need for fundamental signal processing techniques to operate directly on pulse trains without signal reconstruction. In this paper, the feasibility of performing online the signal processing operations of addition, multiplication, and convolution of analog signals using thei","authors_text":"Gabriel Nallathambi, Jose C. Principe","cross_cats":["cs.NE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-12-31T09:29:01Z","title":"Theory and Algorithms for Pulse Signal Processing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01140","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":"sha256:76b4f8502a4bf77e346816d3f887412a168d4c978e977c2b293b4d53c064fc17","target":"record","created_at":"2026-05-17T23:56:56Z","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":"06fd5a9903c68a882d88811dbc18a2d685d3ca6d962416628df4aef57871058c","cross_cats_sorted":["cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-12-31T09:29:01Z","title_canon_sha256":"9676297de6f1c18d0011cd844b5a52aa835d62126f1283e3c4a79f3b79749ffb"},"schema_version":"1.0","source":{"id":"1901.01140","kind":"arxiv","version":1}},"canonical_sha256":"e47bc25874abc4b15b15819942f614e2a401bb78c0bf13d33a692e74d2ab4a52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e47bc25874abc4b15b15819942f614e2a401bb78c0bf13d33a692e74d2ab4a52","first_computed_at":"2026-05-17T23:56:56.965727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:56.965727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Ot1pqohksu3xClY/dnTSlMvPhJ7yxjFAofL/iJrp3yxNqc6282Tr91UOpEKLhu6Nkfmnvnanx7ak7fayKr2AA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:56.966183Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.01140","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76b4f8502a4bf77e346816d3f887412a168d4c978e977c2b293b4d53c064fc17","sha256:a5c1b605c3665a4788f360e879aaf6ad4d22114c6af205f612074431517c0aa7"],"state_sha256":"af97d7856ae7b935a41fe9cf8706eb15988d876eb2e839e3a4c40cb16cff8a4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Aa7WTfLygY1QrJ5R9HrLwwEXKEucndtWeefbm6i3/kNGyE+xujbOp+iTCSzSfWYjGHGz7g5GZLA638ctR7vWDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:26:02.365811Z","bundle_sha256":"ae8f55cdf47cf8a59d146b89152cea927fa8d17140e71fe4c02cca6d63a0c6cd"}}