{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:Z2EHSSWJQTJTTAPIO2G65KBLSB","short_pith_number":"pith:Z2EHSSWJ","canonical_record":{"source":{"id":"2605.28453","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-05-27T13:20:36Z","cross_cats_sorted":[],"title_canon_sha256":"9176235abe5d30334565fd0a3930c0e517590f23e077e62a1ebfb698b56c8887","abstract_canon_sha256":"10d421b4c40c9da719284f8bfd82ab4929a14e74effc67f61449000ed08dc7d0"},"schema_version":"1.0"},"canonical_sha256":"ce88794ac984d33981e8768deea82b9074347ebcd5c394a94eb13427e540da64","source":{"kind":"arxiv","id":"2605.28453","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28453","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28453v1","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28453","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"Z2EHSSWJQTJT","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_16","alias_value":"Z2EHSSWJQTJTTAPI","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_8","alias_value":"Z2EHSSWJ","created_at":"2026-05-28T02:04:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:Z2EHSSWJQTJTTAPIO2G65KBLSB","target":"record","payload":{"canonical_record":{"source":{"id":"2605.28453","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-05-27T13:20:36Z","cross_cats_sorted":[],"title_canon_sha256":"9176235abe5d30334565fd0a3930c0e517590f23e077e62a1ebfb698b56c8887","abstract_canon_sha256":"10d421b4c40c9da719284f8bfd82ab4929a14e74effc67f61449000ed08dc7d0"},"schema_version":"1.0"},"canonical_sha256":"ce88794ac984d33981e8768deea82b9074347ebcd5c394a94eb13427e540da64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T02:04:53.481261Z","signature_b64":"DjeOY8XTUhu1GJ8MfTrx/aHSdL2mOBkGw/CjfFaeh4GDnnolxTSBiRtNY63HmD3FjNDu7RKezHZHrmJZww+HDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce88794ac984d33981e8768deea82b9074347ebcd5c394a94eb13427e540da64","last_reissued_at":"2026-05-28T02:04:53.480809Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T02:04:53.480809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.28453","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":"2026-05-28T02:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ymd6D7vRhZQNSJw4ZsXpwSjv6NcL9pN1JUz+fCIBCbFD4XmOO6gzUA/k2rlYd3C8IA01knah+BqGHPnRDfi8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T05:10:49.968106Z"},"content_sha256":"812305bf59143036e9a34351847ba02c846e969ae8901e5509ac9804f9dba5ba","schema_version":"1.0","event_id":"sha256:812305bf59143036e9a34351847ba02c846e969ae8901e5509ac9804f9dba5ba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:Z2EHSSWJQTJTTAPIO2G65KBLSB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Unified Framework for Unbiased Non-Coherent Over-the-Air Computation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Erik G. Larsson, Martin Dahl, Zheng Chen","submitted_at":"2026-05-27T13:20:36Z","abstract_excerpt":"Over-the-Air Computation (OAC) enables efficient data aggregation in large-scale distributed systems by exploiting the superposition property of wireless multiple-access channels. In contrast to most existing studies on OAC assuming exact channel state information, we consider non-coherent OAC (NC-OAC) where the channel phase is unknown at the transmitters. A three-step framework for NC-OAC with a mapping between source data and codewords is proposed: 1) Devices encode their data to non-negative codewords; 2) Devices transmit a sequence of symbols with amplitude proportional to their codewords"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28453","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.28453/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-28T02:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b1GxuQdjW1KOYaqJ5OX75ZB/ABXxX149hg67bYGuGb/uGWB0hTnsLOR8wPIsbvAViKmlC+x+RLZtzPEA1oVABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T05:10:49.968493Z"},"content_sha256":"012233d279df00cea0308dc7505d8547e2b71acf7843705f6f93225c0846d51d","schema_version":"1.0","event_id":"sha256:012233d279df00cea0308dc7505d8547e2b71acf7843705f6f93225c0846d51d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/bundle.json","state_url":"https://pith.science/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/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":"2026-06-29T05:10:49Z","links":{"resolver":"https://pith.science/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB","bundle":"https://pith.science/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/bundle.json","state":"https://pith.science/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z2EHSSWJQTJTTAPIO2G65KBLSB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:Z2EHSSWJQTJTTAPIO2G65KBLSB","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":"10d421b4c40c9da719284f8bfd82ab4929a14e74effc67f61449000ed08dc7d0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-05-27T13:20:36Z","title_canon_sha256":"9176235abe5d30334565fd0a3930c0e517590f23e077e62a1ebfb698b56c8887"},"schema_version":"1.0","source":{"id":"2605.28453","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28453","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28453v1","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28453","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"Z2EHSSWJQTJT","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_16","alias_value":"Z2EHSSWJQTJTTAPI","created_at":"2026-05-28T02:04:53Z"},{"alias_kind":"pith_short_8","alias_value":"Z2EHSSWJ","created_at":"2026-05-28T02:04:53Z"}],"graph_snapshots":[{"event_id":"sha256:012233d279df00cea0308dc7505d8547e2b71acf7843705f6f93225c0846d51d","target":"graph","created_at":"2026-05-28T02:04:53Z","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/2605.28453/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Over-the-Air Computation (OAC) enables efficient data aggregation in large-scale distributed systems by exploiting the superposition property of wireless multiple-access channels. In contrast to most existing studies on OAC assuming exact channel state information, we consider non-coherent OAC (NC-OAC) where the channel phase is unknown at the transmitters. A three-step framework for NC-OAC with a mapping between source data and codewords is proposed: 1) Devices encode their data to non-negative codewords; 2) Devices transmit a sequence of symbols with amplitude proportional to their codewords","authors_text":"Erik G. Larsson, Martin Dahl, Zheng Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-05-27T13:20:36Z","title":"A Unified Framework for Unbiased Non-Coherent Over-the-Air Computation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28453","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":"sha256:812305bf59143036e9a34351847ba02c846e969ae8901e5509ac9804f9dba5ba","target":"record","created_at":"2026-05-28T02:04:53Z","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":"10d421b4c40c9da719284f8bfd82ab4929a14e74effc67f61449000ed08dc7d0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-05-27T13:20:36Z","title_canon_sha256":"9176235abe5d30334565fd0a3930c0e517590f23e077e62a1ebfb698b56c8887"},"schema_version":"1.0","source":{"id":"2605.28453","kind":"arxiv","version":1}},"canonical_sha256":"ce88794ac984d33981e8768deea82b9074347ebcd5c394a94eb13427e540da64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce88794ac984d33981e8768deea82b9074347ebcd5c394a94eb13427e540da64","first_computed_at":"2026-05-28T02:04:53.480809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T02:04:53.480809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DjeOY8XTUhu1GJ8MfTrx/aHSdL2mOBkGw/CjfFaeh4GDnnolxTSBiRtNY63HmD3FjNDu7RKezHZHrmJZww+HDw==","signature_status":"signed_v1","signed_at":"2026-05-28T02:04:53.481261Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.28453","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:812305bf59143036e9a34351847ba02c846e969ae8901e5509ac9804f9dba5ba","sha256:012233d279df00cea0308dc7505d8547e2b71acf7843705f6f93225c0846d51d"],"state_sha256":"c83a02008f1e247e5bcaf3c6a73e968de4a91f9b78549be65c71fa22f1e880ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r2TsN4hS8a/6SDiS+Qxb/Y6m1vyEAIKYzt3nbJCfWaqVxk8iP784w97CllWOtKju2p/SITie2XZwPnHZLZDaAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T05:10:49.970664Z","bundle_sha256":"1abb357444d71a6f8b0faa58d1fea869475b06ae5c79e6e871986ea5b52300bd"}}