{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:255BVFDCPEHXSPY2DOL6LSXGEQ","short_pith_number":"pith:255BVFDC","canonical_record":{"source":{"id":"2502.14250","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-02-20T04:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"ea3d59e38f4cac2dc64795fc1157b0804d7821f3cb4795b25d18da74168facb3","abstract_canon_sha256":"f6e18749fa3343b8dd69be23e84cb6d2194668b9f38fd69318e109f50f927c18"},"schema_version":"1.0"},"canonical_sha256":"d77a1a9462790f793f1a1b97e5cae62404c72517c6a073331dca9486d3922c94","source":{"kind":"arxiv","id":"2502.14250","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.14250","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"arxiv_version","alias_value":"2502.14250v1","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.14250","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_12","alias_value":"255BVFDCPEHX","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_16","alias_value":"255BVFDCPEHXSPY2","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_8","alias_value":"255BVFDC","created_at":"2026-07-05T10:17:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:255BVFDCPEHXSPY2DOL6LSXGEQ","target":"record","payload":{"canonical_record":{"source":{"id":"2502.14250","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-02-20T04:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"ea3d59e38f4cac2dc64795fc1157b0804d7821f3cb4795b25d18da74168facb3","abstract_canon_sha256":"f6e18749fa3343b8dd69be23e84cb6d2194668b9f38fd69318e109f50f927c18"},"schema_version":"1.0"},"canonical_sha256":"d77a1a9462790f793f1a1b97e5cae62404c72517c6a073331dca9486d3922c94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:17:23.379338Z","signature_b64":"1NPZAnJy3Dxdm/PnxaKkBAmTRf9zswcyUy8TWPa9j1BFasb9+FgBkLpSqpkGUtDhCI9KPDRfvvG2tx/FLm4xCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d77a1a9462790f793f1a1b97e5cae62404c72517c6a073331dca9486d3922c94","last_reissued_at":"2026-07-05T10:17:23.378844Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:17:23.378844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.14250","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":"2026-07-05T10:17:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MY0nHa5Zz4ASNub+Nf50xv863rat567L/+7dJBR6K/BcKKnG5yW1N+H7JZI694ykYoBNrDVSvC5GMnYcGtPeDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T11:13:24.346704Z"},"content_sha256":"2c2008b64d8dd79d3ad7c52f04fdee90b3e2515b1b10b2a9350cbb1a20cfc973","schema_version":"1.0","event_id":"sha256:2c2008b64d8dd79d3ad7c52f04fdee90b3e2515b1b10b2a9350cbb1a20cfc973"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:255BVFDCPEHXSPY2DOL6LSXGEQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Low-Complexity Placement Design of Pinching-Antenna Systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Fang Fang, Xianbin Wang, Ximing Xie, Zhiguo Ding","submitted_at":"2025-02-20T04:35:06Z","abstract_excerpt":"Pinching-antenna systems have recently been proposed as a new candidate for flexible-antenna systems, not only inheriting the reconfiguration capability but also offering a unique feature: establishing line-of-sight links to mitigate large-scale path loss. However, sophisticated optimization of the placement of pinching antennas has very high complexity, which is challenging for practical implementation. This paper proposes a low-complexity placement design, providing the closed-form expression of the placement of pinching antennas, to maximize the sum rate of multiple downlink users. Orthogon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.14250","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/2502.14250/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":"2026-07-05T10:17:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vukl6F4lFYPItzoFWZ6JmE/h/ypOT0/yuBeto0DADzVkqMLlQ8WGOFjRu1nsvq0V8I5NwNglx9GMVJ0cHBgsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T11:13:24.347277Z"},"content_sha256":"5836bcf1a861b8f3bf8fc6ca206751c1e5f6d95bccab195133d534275954e441","schema_version":"1.0","event_id":"sha256:5836bcf1a861b8f3bf8fc6ca206751c1e5f6d95bccab195133d534275954e441"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/bundle.json","state_url":"https://pith.science/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/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":"2026-08-07T11:13:24Z","links":{"resolver":"https://pith.science/pith/255BVFDCPEHXSPY2DOL6LSXGEQ","bundle":"https://pith.science/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/bundle.json","state":"https://pith.science/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/255BVFDCPEHXSPY2DOL6LSXGEQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:255BVFDCPEHXSPY2DOL6LSXGEQ","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":"f6e18749fa3343b8dd69be23e84cb6d2194668b9f38fd69318e109f50f927c18","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-02-20T04:35:06Z","title_canon_sha256":"ea3d59e38f4cac2dc64795fc1157b0804d7821f3cb4795b25d18da74168facb3"},"schema_version":"1.0","source":{"id":"2502.14250","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.14250","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"arxiv_version","alias_value":"2502.14250v1","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.14250","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_12","alias_value":"255BVFDCPEHX","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_16","alias_value":"255BVFDCPEHXSPY2","created_at":"2026-07-05T10:17:23Z"},{"alias_kind":"pith_short_8","alias_value":"255BVFDC","created_at":"2026-07-05T10:17:23Z"}],"graph_snapshots":[{"event_id":"sha256:5836bcf1a861b8f3bf8fc6ca206751c1e5f6d95bccab195133d534275954e441","target":"graph","created_at":"2026-07-05T10:17:23Z","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/2502.14250/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pinching-antenna systems have recently been proposed as a new candidate for flexible-antenna systems, not only inheriting the reconfiguration capability but also offering a unique feature: establishing line-of-sight links to mitigate large-scale path loss. However, sophisticated optimization of the placement of pinching antennas has very high complexity, which is challenging for practical implementation. This paper proposes a low-complexity placement design, providing the closed-form expression of the placement of pinching antennas, to maximize the sum rate of multiple downlink users. Orthogon","authors_text":"Fang Fang, Xianbin Wang, Ximing Xie, Zhiguo Ding","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-02-20T04:35:06Z","title":"A Low-Complexity Placement Design of Pinching-Antenna Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.14250","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":"sha256:2c2008b64d8dd79d3ad7c52f04fdee90b3e2515b1b10b2a9350cbb1a20cfc973","target":"record","created_at":"2026-07-05T10:17:23Z","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":"f6e18749fa3343b8dd69be23e84cb6d2194668b9f38fd69318e109f50f927c18","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-02-20T04:35:06Z","title_canon_sha256":"ea3d59e38f4cac2dc64795fc1157b0804d7821f3cb4795b25d18da74168facb3"},"schema_version":"1.0","source":{"id":"2502.14250","kind":"arxiv","version":1}},"canonical_sha256":"d77a1a9462790f793f1a1b97e5cae62404c72517c6a073331dca9486d3922c94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d77a1a9462790f793f1a1b97e5cae62404c72517c6a073331dca9486d3922c94","first_computed_at":"2026-07-05T10:17:23.378844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:17:23.378844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1NPZAnJy3Dxdm/PnxaKkBAmTRf9zswcyUy8TWPa9j1BFasb9+FgBkLpSqpkGUtDhCI9KPDRfvvG2tx/FLm4xCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:17:23.379338Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.14250","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c2008b64d8dd79d3ad7c52f04fdee90b3e2515b1b10b2a9350cbb1a20cfc973","sha256:5836bcf1a861b8f3bf8fc6ca206751c1e5f6d95bccab195133d534275954e441"],"state_sha256":"95f86b14f286f6d362789cef019ddb6cdf2a9610bc331351b3d5941cd658cba9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V7C9qKl2sV7R7P8+CXzpzlJWY0PcfNYl2zA8YFz4wWCq4unzjK61SmE3ejr61tKb9AmEOPAQ4GJ3mRrr9MmmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T11:13:24.356526Z","bundle_sha256":"9eff3aab2065b7fbd6d1b99ed8dbefe42e61fcfa9310590e1ce526ddf2444af2"}}