{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:YGEQQEQ2XV3RPAYR3DLKTZZRPJ","short_pith_number":"pith:YGEQQEQ2","schema_version":"1.0","canonical_sha256":"c18908121abd77178311d8d6a9e7317a57b5c9ca94a4113849e9636bbcf9a7b4","source":{"kind":"arxiv","id":"1612.04205","version":1},"attestation_state":"computed","paper":{"title":"Wormholes and black universes communicated with extra dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. Makhmudov, K.A. Bronnikov, M.V. Skvortsova, P.A. Korolyov","submitted_at":"2016-12-13T14:36:07Z","abstract_excerpt":"In 6D general relativity with a phantom scalar field as a source of gravity, we present solutions that implement a transition from an effective 4D geometry times small extra dimensions to an effectively 6D space-time where the physical laws are different from ours. We consider manifolds with the structure M0 x M1 x M2, where M0 is 2D Lorentzian space-time while each of M1 and M2 can be a 2-sphere or a 2-torus. Some solutions describe wormholes with spherical symmetry in our space-time and toroidal extra dimensions. Others are of black universe type: at one end there is a 6D asymptotically anti"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1612.04205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-12-13T14:36:07Z","cross_cats_sorted":[],"title_canon_sha256":"545dfaf404c7aae68bec91267ddc6123b6d9e91012aa395b22118b068b64021e","abstract_canon_sha256":"4f4c93a40911a0842d9f4c3ff6ef7d00b46e9800ae065336cd3ac80dd2629c33"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:04.905148Z","signature_b64":"t+jzrjqB4/rnV6/kaz5afRVM88xhBgLrAQ3OkRwvknqirUYEnWGVjZ13dYQpeaN+v7PSrcXku98J9qF3iGZvBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c18908121abd77178311d8d6a9e7317a57b5c9ca94a4113849e9636bbcf9a7b4","last_reissued_at":"2026-05-18T00:35:04.904552Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:04.904552Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Wormholes and black universes communicated with extra dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. Makhmudov, K.A. Bronnikov, M.V. Skvortsova, P.A. Korolyov","submitted_at":"2016-12-13T14:36:07Z","abstract_excerpt":"In 6D general relativity with a phantom scalar field as a source of gravity, we present solutions that implement a transition from an effective 4D geometry times small extra dimensions to an effectively 6D space-time where the physical laws are different from ours. We consider manifolds with the structure M0 x M1 x M2, where M0 is 2D Lorentzian space-time while each of M1 and M2 can be a 2-sphere or a 2-torus. Some solutions describe wormholes with spherical symmetry in our space-time and toroidal extra dimensions. Others are of black universe type: at one end there is a 6D asymptotically anti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.04205","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1612.04205","created_at":"2026-05-18T00:35:04.904666+00:00"},{"alias_kind":"arxiv_version","alias_value":"1612.04205v1","created_at":"2026-05-18T00:35:04.904666+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.04205","created_at":"2026-05-18T00:35:04.904666+00:00"},{"alias_kind":"pith_short_12","alias_value":"YGEQQEQ2XV3R","created_at":"2026-05-18T12:30:53.716459+00:00"},{"alias_kind":"pith_short_16","alias_value":"YGEQQEQ2XV3RPAYR","created_at":"2026-05-18T12:30:53.716459+00:00"},{"alias_kind":"pith_short_8","alias_value":"YGEQQEQ2","created_at":"2026-05-18T12:30:53.716459+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ","json":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ.json","graph_json":"https://pith.science/api/pith-number/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/graph.json","events_json":"https://pith.science/api/pith-number/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/events.json","paper":"https://pith.science/paper/YGEQQEQ2"},"agent_actions":{"view_html":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ","download_json":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ.json","view_paper":"https://pith.science/paper/YGEQQEQ2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1612.04205&json=true","fetch_graph":"https://pith.science/api/pith-number/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/graph.json","fetch_events":"https://pith.science/api/pith-number/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/action/storage_attestation","attest_author":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/action/author_attestation","sign_citation":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/action/citation_signature","submit_replication":"https://pith.science/pith/YGEQQEQ2XV3RPAYR3DLKTZZRPJ/action/replication_record"}},"created_at":"2026-05-18T00:35:04.904666+00:00","updated_at":"2026-05-18T00:35:04.904666+00:00"}