{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:6I742YZTGHL5GDUWNH4V2DUPGH","short_pith_number":"pith:6I742YZT","canonical_record":{"source":{"id":"2106.01758","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2021-06-03T11:25:56Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"ec5a1335158863e4f1f9b78bedce23d41a969dba6ad3af4f4bc2c0cc90b0ed71","abstract_canon_sha256":"f08f509a5215db187f17f2031baaf684d3a223f40417084bdc9b04265e085d6e"},"schema_version":"1.0"},"canonical_sha256":"f23fcd633331d7d30e9669f95d0e8f31f53d3e521ac1a0ac239d12a78daeafbc","source":{"kind":"arxiv","id":"2106.01758","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.01758","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"arxiv_version","alias_value":"2106.01758v2","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.01758","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_12","alias_value":"6I742YZTGHL5","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_16","alias_value":"6I742YZTGHL5GDUW","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_8","alias_value":"6I742YZT","created_at":"2026-07-05T03:51:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:6I742YZTGHL5GDUWNH4V2DUPGH","target":"record","payload":{"canonical_record":{"source":{"id":"2106.01758","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2021-06-03T11:25:56Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"ec5a1335158863e4f1f9b78bedce23d41a969dba6ad3af4f4bc2c0cc90b0ed71","abstract_canon_sha256":"f08f509a5215db187f17f2031baaf684d3a223f40417084bdc9b04265e085d6e"},"schema_version":"1.0"},"canonical_sha256":"f23fcd633331d7d30e9669f95d0e8f31f53d3e521ac1a0ac239d12a78daeafbc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:51:55.526478Z","signature_b64":"AKkx7vHLXMoDAvxhWayPkVcQq2yh9543d5b9Qqmo4wmjticYYtdJGW+JrldSf/rKDCS3hucCx7T0yRzYNYb5AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f23fcd633331d7d30e9669f95d0e8f31f53d3e521ac1a0ac239d12a78daeafbc","last_reissued_at":"2026-07-05T03:51:55.526053Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:51:55.526053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.01758","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":"2026-07-05T03:51:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J9G1C8k1JA8o+QrVTdZBDuwpOckdfjIY4UMCYz5BxjlqReiFP8J/3E7e4uW0Vqq6tQRSdQ/mWD5yuyouBNOFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:51:33.971700Z"},"content_sha256":"77b731fafe753d42ea3d486b53c6463a3ef31655fc22aee072570c6f01a6c9aa","schema_version":"1.0","event_id":"sha256:77b731fafe753d42ea3d486b53c6463a3ef31655fc22aee072570c6f01a6c9aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:6I742YZTGHL5GDUWNH4V2DUPGH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identifying Riemannian singularities with regular non-Riemannian geometry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Jeong-Hyuck Park, Kevin Morand, Miok Park","submitted_at":"2021-06-03T11:25:56Z","abstract_excerpt":"Admitting non-Riemannian geometries, Double Field Theory extends the notion of spacetime beyond the Riemannian paradigm. We identify a class of singular spacetimes known in General Relativity with regular non-Riemannian geometries. The former divergences merely correspond to coordinate singularities of the generalised metric for the latter. Computed in string frame, they feature an impenetrable non-Riemannian sphere outside of which geodesics are complete with no singular deviation. Approaching the non-Riemannian points, particles freeze and strings become (anti-)chiral."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.01758","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2106.01758/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":"2026-07-05T03:51:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y4AC9u2xthV8y1uF8Ei8IzaqsiVUIynBAn/RbJE7TRDkDovwfyTtxmuq+rZERzs7QhfjGIB9Hr0n5VnCB1xhAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:51:33.972197Z"},"content_sha256":"698c3e60efefbf7e6640d56dda1f22b2ee62b488a11a1d213f41c90184dbe9b2","schema_version":"1.0","event_id":"sha256:698c3e60efefbf7e6640d56dda1f22b2ee62b488a11a1d213f41c90184dbe9b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6I742YZTGHL5GDUWNH4V2DUPGH/bundle.json","state_url":"https://pith.science/pith/6I742YZTGHL5GDUWNH4V2DUPGH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6I742YZTGHL5GDUWNH4V2DUPGH/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":"2026-08-04T13:51:33Z","links":{"resolver":"https://pith.science/pith/6I742YZTGHL5GDUWNH4V2DUPGH","bundle":"https://pith.science/pith/6I742YZTGHL5GDUWNH4V2DUPGH/bundle.json","state":"https://pith.science/pith/6I742YZTGHL5GDUWNH4V2DUPGH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6I742YZTGHL5GDUWNH4V2DUPGH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6I742YZTGHL5GDUWNH4V2DUPGH","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":"f08f509a5215db187f17f2031baaf684d3a223f40417084bdc9b04265e085d6e","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2021-06-03T11:25:56Z","title_canon_sha256":"ec5a1335158863e4f1f9b78bedce23d41a969dba6ad3af4f4bc2c0cc90b0ed71"},"schema_version":"1.0","source":{"id":"2106.01758","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.01758","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"arxiv_version","alias_value":"2106.01758v2","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.01758","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_12","alias_value":"6I742YZTGHL5","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_16","alias_value":"6I742YZTGHL5GDUW","created_at":"2026-07-05T03:51:55Z"},{"alias_kind":"pith_short_8","alias_value":"6I742YZT","created_at":"2026-07-05T03:51:55Z"}],"graph_snapshots":[{"event_id":"sha256:698c3e60efefbf7e6640d56dda1f22b2ee62b488a11a1d213f41c90184dbe9b2","target":"graph","created_at":"2026-07-05T03:51:55Z","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/2106.01758/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Admitting non-Riemannian geometries, Double Field Theory extends the notion of spacetime beyond the Riemannian paradigm. We identify a class of singular spacetimes known in General Relativity with regular non-Riemannian geometries. The former divergences merely correspond to coordinate singularities of the generalised metric for the latter. Computed in string frame, they feature an impenetrable non-Riemannian sphere outside of which geodesics are complete with no singular deviation. Approaching the non-Riemannian points, particles freeze and strings become (anti-)chiral.","authors_text":"Jeong-Hyuck Park, Kevin Morand, Miok Park","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2021-06-03T11:25:56Z","title":"Identifying Riemannian singularities with regular non-Riemannian geometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.01758","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":"sha256:77b731fafe753d42ea3d486b53c6463a3ef31655fc22aee072570c6f01a6c9aa","target":"record","created_at":"2026-07-05T03:51:55Z","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":"f08f509a5215db187f17f2031baaf684d3a223f40417084bdc9b04265e085d6e","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2021-06-03T11:25:56Z","title_canon_sha256":"ec5a1335158863e4f1f9b78bedce23d41a969dba6ad3af4f4bc2c0cc90b0ed71"},"schema_version":"1.0","source":{"id":"2106.01758","kind":"arxiv","version":2}},"canonical_sha256":"f23fcd633331d7d30e9669f95d0e8f31f53d3e521ac1a0ac239d12a78daeafbc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f23fcd633331d7d30e9669f95d0e8f31f53d3e521ac1a0ac239d12a78daeafbc","first_computed_at":"2026-07-05T03:51:55.526053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:51:55.526053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AKkx7vHLXMoDAvxhWayPkVcQq2yh9543d5b9Qqmo4wmjticYYtdJGW+JrldSf/rKDCS3hucCx7T0yRzYNYb5AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:51:55.526478Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.01758","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77b731fafe753d42ea3d486b53c6463a3ef31655fc22aee072570c6f01a6c9aa","sha256:698c3e60efefbf7e6640d56dda1f22b2ee62b488a11a1d213f41c90184dbe9b2"],"state_sha256":"0ec5738ca0ef90a53da911d0d98c19f6e713f6a6a104327ab4a99b00a27c8f3b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iQx21C4TyiienZOTJ0TMqewI+ZV8ZAL0BuHvw6TCYdTzRRoHhkyp1C0KuJgbq2078pMPKruI3UfLWFSm9Z6SCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T13:51:33.976080Z","bundle_sha256":"a7a5cf199104bbe7953b5a3fa6de4a45ee09b655345899ee2f95eec0ec2ebc29"}}