{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:QBHB3HFDC5L4YF43ZVPGXBJ5PE","short_pith_number":"pith:QBHB3HFD","canonical_record":{"source":{"id":"cond-mat/0603799","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-03-29T18:00:25Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"title_canon_sha256":"b244b8f8d88a1f59d67a7b58bb16403299fa90cf4053eba448226291765ff9a5","abstract_canon_sha256":"247f8df980edb62924b21eb50c2d0c76361f3534b01f8687db5481f4a6073e35"},"schema_version":"1.0"},"canonical_sha256":"804e1d9ca31757cc179bcd5e6b853d7900ac080b892f3323b78c1af1905b3d60","source":{"kind":"arxiv","id":"cond-mat/0603799","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0603799","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0603799v2","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0603799","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"pith_short_12","alias_value":"QBHB3HFDC5L4","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"QBHB3HFDC5L4YF43","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"QBHB3HFD","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:QBHB3HFDC5L4YF43ZVPGXBJ5PE","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0603799","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-03-29T18:00:25Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"title_canon_sha256":"b244b8f8d88a1f59d67a7b58bb16403299fa90cf4053eba448226291765ff9a5","abstract_canon_sha256":"247f8df980edb62924b21eb50c2d0c76361f3534b01f8687db5481f4a6073e35"},"schema_version":"1.0"},"canonical_sha256":"804e1d9ca31757cc179bcd5e6b853d7900ac080b892f3323b78c1af1905b3d60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:49.822157Z","signature_b64":"+AyUkhhDm67JtTfEjKTOIYk3sifNfKCsoVwVo7Zq53EEuP+H8eOX3Re4f4zvgtZhkV4TSCR+kBy/pdZOOg8nCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"804e1d9ca31757cc179bcd5e6b853d7900ac080b892f3323b78c1af1905b3d60","last_reissued_at":"2026-05-18T01:06:49.821478Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:49.821478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0603799","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":"2026-05-18T01:06:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oNthaH9yUmyWFdYCemkr8R2Afs1Vh4IYTj20/Gm/L+Fa+1Dec45FRw69xKKsq2OkPJ6siR0dwgW7Yp7GuwaQAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T06:23:16.790669Z"},"content_sha256":"02b6c390a23cf1e4545b26d8038e8e6694acbdee8bc83e3e444ad9ac4b747d37","schema_version":"1.0","event_id":"sha256:02b6c390a23cf1e4545b26d8038e8e6694acbdee8bc83e3e444ad9ac4b747d37"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:QBHB3HFDC5L4YF43ZVPGXBJ5PE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Calculation of the Superconductivity Gap of Metal from Its Parameters in Normal State","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"primary_cat":"cond-mat.supr-con","authors_text":"I.M.Yurin","submitted_at":"2006-03-29T18:00:25Z","abstract_excerpt":"A previously considered model interpreted a superconductor as an electron gas immersed in a medium with the dielectric constant $\\epsilon$ and a certain elasticity, which could be determined by measured sonic speed in the metal. The obtained expression of effective electron-electron interaction (EEI) potential unambiguously implied that, contrary to the suggestions of BCS theory, it is its long-wave limit which is responsible for the emergence of bound two-electron states and, consequently, for gap formation in one-electron spectrum of the metal. However, the existence of singularities in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0603799","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":"2026-05-18T01:06:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gcn7/6o/Yb/SYNAJvUbQ5LPHepl/TXdJTmA01yQtxdsFTJA3R5LGwXoXyNZ7apgPwvYPyq397GbS4/lpTHL5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T06:23:16.791022Z"},"content_sha256":"7d58be316eb9cec044af5df61df5596a8e8f613296dbd47561e0124b3a1464e7","schema_version":"1.0","event_id":"sha256:7d58be316eb9cec044af5df61df5596a8e8f613296dbd47561e0124b3a1464e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/bundle.json","state_url":"https://pith.science/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/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":"2026-06-25T06:23:16Z","links":{"resolver":"https://pith.science/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE","bundle":"https://pith.science/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/bundle.json","state":"https://pith.science/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QBHB3HFDC5L4YF43ZVPGXBJ5PE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:QBHB3HFDC5L4YF43ZVPGXBJ5PE","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":"247f8df980edb62924b21eb50c2d0c76361f3534b01f8687db5481f4a6073e35","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-03-29T18:00:25Z","title_canon_sha256":"b244b8f8d88a1f59d67a7b58bb16403299fa90cf4053eba448226291765ff9a5"},"schema_version":"1.0","source":{"id":"cond-mat/0603799","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0603799","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0603799v2","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0603799","created_at":"2026-05-18T01:06:49Z"},{"alias_kind":"pith_short_12","alias_value":"QBHB3HFDC5L4","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"QBHB3HFDC5L4YF43","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"QBHB3HFD","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:7d58be316eb9cec044af5df61df5596a8e8f613296dbd47561e0124b3a1464e7","target":"graph","created_at":"2026-05-18T01:06:49Z","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":"A previously considered model interpreted a superconductor as an electron gas immersed in a medium with the dielectric constant $\\epsilon$ and a certain elasticity, which could be determined by measured sonic speed in the metal. The obtained expression of effective electron-electron interaction (EEI) potential unambiguously implied that, contrary to the suggestions of BCS theory, it is its long-wave limit which is responsible for the emergence of bound two-electron states and, consequently, for gap formation in one-electron spectrum of the metal. However, the existence of singularities in the ","authors_text":"I.M.Yurin","cross_cats":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-03-29T18:00:25Z","title":"Calculation of the Superconductivity Gap of Metal from Its Parameters in Normal State"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0603799","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":"sha256:02b6c390a23cf1e4545b26d8038e8e6694acbdee8bc83e3e444ad9ac4b747d37","target":"record","created_at":"2026-05-18T01:06:49Z","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":"247f8df980edb62924b21eb50c2d0c76361f3534b01f8687db5481f4a6073e35","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.stat-mech","cond-mat.str-el","math-ph","math.MP"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-03-29T18:00:25Z","title_canon_sha256":"b244b8f8d88a1f59d67a7b58bb16403299fa90cf4053eba448226291765ff9a5"},"schema_version":"1.0","source":{"id":"cond-mat/0603799","kind":"arxiv","version":2}},"canonical_sha256":"804e1d9ca31757cc179bcd5e6b853d7900ac080b892f3323b78c1af1905b3d60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"804e1d9ca31757cc179bcd5e6b853d7900ac080b892f3323b78c1af1905b3d60","first_computed_at":"2026-05-18T01:06:49.821478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:49.821478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+AyUkhhDm67JtTfEjKTOIYk3sifNfKCsoVwVo7Zq53EEuP+H8eOX3Re4f4zvgtZhkV4TSCR+kBy/pdZOOg8nCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:49.822157Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0603799","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02b6c390a23cf1e4545b26d8038e8e6694acbdee8bc83e3e444ad9ac4b747d37","sha256:7d58be316eb9cec044af5df61df5596a8e8f613296dbd47561e0124b3a1464e7"],"state_sha256":"7c51518bbc80d4c7486ae4a3baf17c412cfd88327fe817a0f45ba47c7bcd0580"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jggoBN9MDK2BtDWizonMn+AiFXcHECZHudLKdu9sRUUp2QaFuzfUuaq3DQW10MqeuzMEOG9+LEQc7XP2dTGBBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T06:23:16.793009Z","bundle_sha256":"bd02cdc1bb8248cffac4bde473389379d3c917b8c51c2d5eb883634eb2d103a6"}}