{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:7FXJMQ2EWNQVXK2X3DMIZLUTPQ","short_pith_number":"pith:7FXJMQ2E","canonical_record":{"source":{"id":"1601.05341","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-20T17:33:26Z","cross_cats_sorted":[],"title_canon_sha256":"af25e8361bb7fdbb52a7c9589c3435ae2d4c4120c8fa9a1ca9185200ed4bc026","abstract_canon_sha256":"4226c35289f281881efd1f76432c6244f71621e77e86b60e981b09359c079587"},"schema_version":"1.0"},"canonical_sha256":"f96e964344b3615bab57d8d88cae937c04ed8f3f774ce0d0682577f4c13c0007","source":{"kind":"arxiv","id":"1601.05341","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05341","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05341v2","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05341","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"pith_short_12","alias_value":"7FXJMQ2EWNQV","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7FXJMQ2EWNQVXK2X","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7FXJMQ2E","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:7FXJMQ2EWNQVXK2X3DMIZLUTPQ","target":"record","payload":{"canonical_record":{"source":{"id":"1601.05341","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-20T17:33:26Z","cross_cats_sorted":[],"title_canon_sha256":"af25e8361bb7fdbb52a7c9589c3435ae2d4c4120c8fa9a1ca9185200ed4bc026","abstract_canon_sha256":"4226c35289f281881efd1f76432c6244f71621e77e86b60e981b09359c079587"},"schema_version":"1.0"},"canonical_sha256":"f96e964344b3615bab57d8d88cae937c04ed8f3f774ce0d0682577f4c13c0007","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:17:41.977558Z","signature_b64":"v/xDevcLjwCfdtDDejRBD1j3GO+lPUO7HVR408yVxReDJgYuvcEHG6GMVpZf8Bv9RbBeA6CsngSHLVQVAwtmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f96e964344b3615bab57d8d88cae937c04ed8f3f774ce0d0682577f4c13c0007","last_reissued_at":"2026-05-18T01:17:41.976884Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:17:41.976884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.05341","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:17:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lyGdW9A1x6k5wq6ywbF3dWeyRv4Od2+oKtW+EMBF0HifaElkpxPN6HmTH7YXZaH2n34vRuN2qcsJ1hDlOq/dAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:33:48.361356Z"},"content_sha256":"12995c0fe09dba44bf61fee7ec8bbf22c1917fc47ac155d39018d4432dfb891e","schema_version":"1.0","event_id":"sha256:12995c0fe09dba44bf61fee7ec8bbf22c1917fc47ac155d39018d4432dfb891e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:7FXJMQ2EWNQVXK2X3DMIZLUTPQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multipartite concurrence for identical-fermion systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. P. Majtey, A. R. Plastino, A. Vald\\'es-Hern\\'andez, P. A. Bouvrie","submitted_at":"2016-01-20T17:33:26Z","abstract_excerpt":"We study the problem of detecting multipartite entanglement among indistinguishable fermionic particles. A multipartite concurrence for pure states of $N$ identical fermions, each one having a $d$-dimensional single-particle Hilbert space, is introduced. Such entanglement measure, in particular, is optimized for maximally entangled states of three identical fermions that play a role analogous to the usual (qubit) Greenberger-Horne-Zeilinger state. In addition, it is shown that the fermionic multipartite concurrence can be expressed as the mean value of an observable, provided two copies of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05341","kind":"arxiv","version":2},"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":"2026-05-18T01:17:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YvEdL4P3topWwirIT+sgIrWdNXRbuPIQj08jibqRqoBsAb+LkKqGvMImxnGgX/1NgLkHxV1rDcTLSR+HhbgIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:33:48.361938Z"},"content_sha256":"6fc9b48a5417eff2d644a15791cab7b2d8fc503491e34e3119e0f8e433941a78","schema_version":"1.0","event_id":"sha256:6fc9b48a5417eff2d644a15791cab7b2d8fc503491e34e3119e0f8e433941a78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/bundle.json","state_url":"https://pith.science/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/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":"2026-05-27T07:33:48Z","links":{"resolver":"https://pith.science/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ","bundle":"https://pith.science/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/bundle.json","state":"https://pith.science/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7FXJMQ2EWNQVXK2X3DMIZLUTPQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7FXJMQ2EWNQVXK2X3DMIZLUTPQ","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":"4226c35289f281881efd1f76432c6244f71621e77e86b60e981b09359c079587","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-20T17:33:26Z","title_canon_sha256":"af25e8361bb7fdbb52a7c9589c3435ae2d4c4120c8fa9a1ca9185200ed4bc026"},"schema_version":"1.0","source":{"id":"1601.05341","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05341","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05341v2","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05341","created_at":"2026-05-18T01:17:41Z"},{"alias_kind":"pith_short_12","alias_value":"7FXJMQ2EWNQV","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7FXJMQ2EWNQVXK2X","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7FXJMQ2E","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:6fc9b48a5417eff2d644a15791cab7b2d8fc503491e34e3119e0f8e433941a78","target":"graph","created_at":"2026-05-18T01:17:41Z","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 study the problem of detecting multipartite entanglement among indistinguishable fermionic particles. A multipartite concurrence for pure states of $N$ identical fermions, each one having a $d$-dimensional single-particle Hilbert space, is introduced. Such entanglement measure, in particular, is optimized for maximally entangled states of three identical fermions that play a role analogous to the usual (qubit) Greenberger-Horne-Zeilinger state. In addition, it is shown that the fermionic multipartite concurrence can be expressed as the mean value of an observable, provided two copies of the","authors_text":"A. P. Majtey, A. R. Plastino, A. Vald\\'es-Hern\\'andez, P. A. Bouvrie","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-20T17:33:26Z","title":"Multipartite concurrence for identical-fermion systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05341","kind":"arxiv","version":2},"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":"sha256:12995c0fe09dba44bf61fee7ec8bbf22c1917fc47ac155d39018d4432dfb891e","target":"record","created_at":"2026-05-18T01:17:41Z","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":"4226c35289f281881efd1f76432c6244f71621e77e86b60e981b09359c079587","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-20T17:33:26Z","title_canon_sha256":"af25e8361bb7fdbb52a7c9589c3435ae2d4c4120c8fa9a1ca9185200ed4bc026"},"schema_version":"1.0","source":{"id":"1601.05341","kind":"arxiv","version":2}},"canonical_sha256":"f96e964344b3615bab57d8d88cae937c04ed8f3f774ce0d0682577f4c13c0007","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f96e964344b3615bab57d8d88cae937c04ed8f3f774ce0d0682577f4c13c0007","first_computed_at":"2026-05-18T01:17:41.976884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:41.976884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v/xDevcLjwCfdtDDejRBD1j3GO+lPUO7HVR408yVxReDJgYuvcEHG6GMVpZf8Bv9RbBeA6CsngSHLVQVAwtmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:41.977558Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.05341","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12995c0fe09dba44bf61fee7ec8bbf22c1917fc47ac155d39018d4432dfb891e","sha256:6fc9b48a5417eff2d644a15791cab7b2d8fc503491e34e3119e0f8e433941a78"],"state_sha256":"00364da4eabb36df1326d536ef341059d233149f198b32799f7da8af708032cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FA8LU+4SH9yDqUwoSiGiYgPIbhYATjapgsNog1sQIYaXzbaKFBoVbUgHJKEftM3EvQKD5YTrIO+aijKJUNt7BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:33:48.365105Z","bundle_sha256":"58201083a738ed54cb773cd042197dfeb192079cbf20f9178ab11bb02aae5179"}}