{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:XCRQSWJ7YLBNBYFLDV7AQOVK74","short_pith_number":"pith:XCRQSWJ7","canonical_record":{"source":{"id":"1703.07382","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-03-21T18:29:41Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b918d29b3c2d262e904accc7410472a853195ae3c2dd4fae1563bac46d5a1323","abstract_canon_sha256":"83ca67f8394dcbfd7f18aa3d85f74c19071fd83fddd33690c60f8282e5c7ea4f"},"schema_version":"1.0"},"canonical_sha256":"b8a309593fc2c2d0e0ab1d7e083aaaff383163506c5bac07e46d67fd09ec37c9","source":{"kind":"arxiv","id":"1703.07382","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.07382","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"arxiv_version","alias_value":"1703.07382v3","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.07382","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"pith_short_12","alias_value":"XCRQSWJ7YLBN","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XCRQSWJ7YLBNBYFL","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XCRQSWJ7","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:XCRQSWJ7YLBNBYFLDV7AQOVK74","target":"record","payload":{"canonical_record":{"source":{"id":"1703.07382","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-03-21T18:29:41Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b918d29b3c2d262e904accc7410472a853195ae3c2dd4fae1563bac46d5a1323","abstract_canon_sha256":"83ca67f8394dcbfd7f18aa3d85f74c19071fd83fddd33690c60f8282e5c7ea4f"},"schema_version":"1.0"},"canonical_sha256":"b8a309593fc2c2d0e0ab1d7e083aaaff383163506c5bac07e46d67fd09ec37c9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:11.215954Z","signature_b64":"NwGOgDIqRkgsDvAb2kSNoOe+xvoVHTtAmv7Xjf0wvuhhkYfFbNeMvoncfmyI9ZtpgS0whduiWTpRErv5dwNMAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b8a309593fc2c2d0e0ab1d7e083aaaff383163506c5bac07e46d67fd09ec37c9","last_reissued_at":"2026-05-18T00:32:11.215370Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:11.215370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.07382","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:32:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t9lnGjH+2WEq7mDxt1UGcjCxQXStqdphNRL+4Us7FQAUDjCMOQ8hyod8nIKIDmREjGsWB9ts/SxzZyuuI0hdAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:34:26.013906Z"},"content_sha256":"19eeb41b01c28c008f539f424c4d0c1357845467880cd374d59166d6fd8eacf1","schema_version":"1.0","event_id":"sha256:19eeb41b01c28c008f539f424c4d0c1357845467880cd374d59166d6fd8eacf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:XCRQSWJ7YLBNBYFLDV7AQOVK74","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-horizon BMS symmetries as fluid symmetries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Robert F. Penna","submitted_at":"2017-03-21T18:29:41Z","abstract_excerpt":"The Bondi-van der Burg-Metzner-Sachs (BMS) group is the asymptotic symmetry group of asymptotically flat gravity. Recently, Donnay et al. have derived an analogous symmetry group acting on black hole event horizons. For a certain choice of boundary conditions, it is a semidirect product of ${\\rm Diff}(S^2)$, the smooth diffeomorphisms of the two-sphere, acting on $C^\\infty(S^2)$, the smooth functions on the two-sphere. We observe that the same group appears in fluid dynamics as symmetries of the compressible Euler equations. We relate these two realizations of ${\\rm Diff}(S^2)\\ltimes C^\\infty("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.07382","kind":"arxiv","version":3},"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":"2026-05-18T00:32:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eKKMfRAWhR9kHoBrhr1AWcnWoq4BPPSwE630R2Ng+Wn077H/AKmB8DjRWjUTVBq6yhvMlYCsM2MMnPi6n2V3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:34:26.014616Z"},"content_sha256":"1c26ffa838851f64edcde316d883bb43dfd00f15454bb984cfd51535eea7d5ce","schema_version":"1.0","event_id":"sha256:1c26ffa838851f64edcde316d883bb43dfd00f15454bb984cfd51535eea7d5ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/bundle.json","state_url":"https://pith.science/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/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":"2026-06-09T19:34:26Z","links":{"resolver":"https://pith.science/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74","bundle":"https://pith.science/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/bundle.json","state":"https://pith.science/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XCRQSWJ7YLBNBYFLDV7AQOVK74/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XCRQSWJ7YLBNBYFLDV7AQOVK74","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":"83ca67f8394dcbfd7f18aa3d85f74c19071fd83fddd33690c60f8282e5c7ea4f","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-03-21T18:29:41Z","title_canon_sha256":"b918d29b3c2d262e904accc7410472a853195ae3c2dd4fae1563bac46d5a1323"},"schema_version":"1.0","source":{"id":"1703.07382","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.07382","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"arxiv_version","alias_value":"1703.07382v3","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.07382","created_at":"2026-05-18T00:32:11Z"},{"alias_kind":"pith_short_12","alias_value":"XCRQSWJ7YLBN","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XCRQSWJ7YLBNBYFL","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XCRQSWJ7","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:1c26ffa838851f64edcde316d883bb43dfd00f15454bb984cfd51535eea7d5ce","target":"graph","created_at":"2026-05-18T00:32:11Z","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":"The Bondi-van der Burg-Metzner-Sachs (BMS) group is the asymptotic symmetry group of asymptotically flat gravity. Recently, Donnay et al. have derived an analogous symmetry group acting on black hole event horizons. For a certain choice of boundary conditions, it is a semidirect product of ${\\rm Diff}(S^2)$, the smooth diffeomorphisms of the two-sphere, acting on $C^\\infty(S^2)$, the smooth functions on the two-sphere. We observe that the same group appears in fluid dynamics as symmetries of the compressible Euler equations. We relate these two realizations of ${\\rm Diff}(S^2)\\ltimes C^\\infty(","authors_text":"Robert F. Penna","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-03-21T18:29:41Z","title":"Near-horizon BMS symmetries as fluid symmetries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.07382","kind":"arxiv","version":3},"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":"sha256:19eeb41b01c28c008f539f424c4d0c1357845467880cd374d59166d6fd8eacf1","target":"record","created_at":"2026-05-18T00:32:11Z","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":"83ca67f8394dcbfd7f18aa3d85f74c19071fd83fddd33690c60f8282e5c7ea4f","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-03-21T18:29:41Z","title_canon_sha256":"b918d29b3c2d262e904accc7410472a853195ae3c2dd4fae1563bac46d5a1323"},"schema_version":"1.0","source":{"id":"1703.07382","kind":"arxiv","version":3}},"canonical_sha256":"b8a309593fc2c2d0e0ab1d7e083aaaff383163506c5bac07e46d67fd09ec37c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b8a309593fc2c2d0e0ab1d7e083aaaff383163506c5bac07e46d67fd09ec37c9","first_computed_at":"2026-05-18T00:32:11.215370Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:11.215370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NwGOgDIqRkgsDvAb2kSNoOe+xvoVHTtAmv7Xjf0wvuhhkYfFbNeMvoncfmyI9ZtpgS0whduiWTpRErv5dwNMAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:11.215954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.07382","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19eeb41b01c28c008f539f424c4d0c1357845467880cd374d59166d6fd8eacf1","sha256:1c26ffa838851f64edcde316d883bb43dfd00f15454bb984cfd51535eea7d5ce"],"state_sha256":"786f8152c14acc1816c3365fd305101e167e2e47ddeaf36760770fb9d79f9e96"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h2LaHZcDaXKPDy6uNgWZondWzAsxV6WP1M1CP3Er/Rq9YCl4bMbFrTfGk28nDoyxQp6Yysp4vCkgJQFGxoMhBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T19:34:26.018663Z","bundle_sha256":"2f6ff482f2fc906da40f7ad8e3c4e8c6cecae8b1cc70f75978df6c39dc82247a"}}