{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JZXNBVTLA3E3RZNU4CA3FZ4QLB","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":"250c5b12c7fdec6a95d8336b31109b39c5812bbd09823419a5ac3e51a11d8b7e","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-12-14T09:42:23Z","title_canon_sha256":"a6de6cb45c876d4aedbc4127f36cf5d5e94c9bbcea730791f7c7335ac4f5fc69"},"schema_version":"1.0","source":{"id":"1712.05141","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05141","created_at":"2026-05-18T00:28:00Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05141v1","created_at":"2026-05-18T00:28:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05141","created_at":"2026-05-18T00:28:00Z"},{"alias_kind":"pith_short_12","alias_value":"JZXNBVTLA3E3","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JZXNBVTLA3E3RZNU","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JZXNBVTL","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:84c1432a88fc75a71ff40a8aa9ff5866d6548f6d1ac2e386327aa555f9555802","target":"graph","created_at":"2026-05-18T00:28:00Z","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 present two new nonlinearity tolerant modulation formats at spectral efficiencies lower than 4bits/4D-symbol, obtained using a simplified bit-to-symbol mapping approach to set-partition PDM-QPSK in 8 dimensions.","authors_text":"D. F. Bendimerad, H. Hafermann, H. Zhang","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-12-14T09:42:23Z","title":"Nonlinearity-tolerant 8D modulation formats by set-partitioning PDM-QPSK"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05141","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:acb19ad532c464320a8d940aa328357e5908dcc721681bd99ab9bb3f51b1d5c4","target":"record","created_at":"2026-05-18T00:28:00Z","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":"250c5b12c7fdec6a95d8336b31109b39c5812bbd09823419a5ac3e51a11d8b7e","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-12-14T09:42:23Z","title_canon_sha256":"a6de6cb45c876d4aedbc4127f36cf5d5e94c9bbcea730791f7c7335ac4f5fc69"},"schema_version":"1.0","source":{"id":"1712.05141","kind":"arxiv","version":1}},"canonical_sha256":"4e6ed0d66b06c9b8e5b4e081b2e790585492040c353634eef06a235fdecc8c54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e6ed0d66b06c9b8e5b4e081b2e790585492040c353634eef06a235fdecc8c54","first_computed_at":"2026-05-18T00:28:00.878869Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:00.878869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kK0Gnonn8z1ejXybuNqRIBsrRpjIfjqAbNKhj5VW5lfBhhDhRUGeVqu5AXVVkaL0+AhGzdcskFx9AMhxTFm5CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:00.879471Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.05141","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acb19ad532c464320a8d940aa328357e5908dcc721681bd99ab9bb3f51b1d5c4","sha256:84c1432a88fc75a71ff40a8aa9ff5866d6548f6d1ac2e386327aa555f9555802"],"state_sha256":"faf87c6123f72094ac0a8666e91f21472a27a5987caa84328d179bf655c2716a"}