{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TWE64CDFWNUUDGKMOCVCRUTLRY","short_pith_number":"pith:TWE64CDF","canonical_record":{"source":{"id":"1902.01816","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-02-05T17:43:58Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"2db5c291818c494e2c1a4cc50ca07a45b5b80fee50143c91f8c457321e4c95c2","abstract_canon_sha256":"feed61757118badbdbb6e4ccbefad6540f29240c57cfead15fea3cf69a43469c"},"schema_version":"1.0"},"canonical_sha256":"9d89ee0865b36941994c70aa28d26b8e0e43bf9ba6eca1de8757f0a5e62f8f44","source":{"kind":"arxiv","id":"1902.01816","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01816","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01816v2","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01816","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"pith_short_12","alias_value":"TWE64CDFWNUU","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"TWE64CDFWNUUDGKM","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"TWE64CDF","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TWE64CDFWNUUDGKMOCVCRUTLRY","target":"record","payload":{"canonical_record":{"source":{"id":"1902.01816","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-02-05T17:43:58Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"2db5c291818c494e2c1a4cc50ca07a45b5b80fee50143c91f8c457321e4c95c2","abstract_canon_sha256":"feed61757118badbdbb6e4ccbefad6540f29240c57cfead15fea3cf69a43469c"},"schema_version":"1.0"},"canonical_sha256":"9d89ee0865b36941994c70aa28d26b8e0e43bf9ba6eca1de8757f0a5e62f8f44","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:39.054361Z","signature_b64":"j141zSSlaplXxUCUXb6sH6NjjJRycOas8O62E+o+I6fwO6p1E2tLSAAv6UrXw80MSKmVtCpIPcdKz+mawULvCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d89ee0865b36941994c70aa28d26b8e0e43bf9ba6eca1de8757f0a5e62f8f44","last_reissued_at":"2026-05-17T23:40:39.053846Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:39.053846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.01816","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":"2026-05-17T23:40:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b3YwncxlYBV4YY5mgZRKnjlLJt99CcgPmel3H47vctTQGIM35b4FKtQqgVL5ZlYRgPX0VncymaDw1aaE5dxoAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:02:39.480798Z"},"content_sha256":"b018d059df0cdc19a89538cf1e7e35f5445c5e4fe7fad6f8b184927aa48b89f6","schema_version":"1.0","event_id":"sha256:b018d059df0cdc19a89538cf1e7e35f5445c5e4fe7fad6f8b184927aa48b89f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TWE64CDFWNUUDGKMOCVCRUTLRY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Conformal wave equations for the Einstein-tracefree matter system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Adem E. Hursit, Diego A. Carranza, Juan A. Valiente Kroon","submitted_at":"2019-02-05T17:43:58Z","abstract_excerpt":"Inspired by a similar analysis for the vacuum conformal Einstein field equations by Paetz [Ann. H. Poincar\\'e 16, 2059 (2015)], in this article we show how to construct a system of quasilinear wave equations for the geometric fields associated to the conformal Einstein field equations coupled to matter models whose energy-momentum tensor has vanishing trace. In this case, the equation of conservation for the energy-momentum tensor is conformally invariant. Our analysis includes the construction of a subsidiary evolution system which allows to prove the propagation of the constraints. We discus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01816","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":"2026-05-17T23:40:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"biYRnjbKVWlenZ3MzGu5rQhBH/+QdM0WLZKvJk29aJegVFd5GuY+mACGAJAmtlOzqmmxTOQhNlIQTnJ0Ej0QBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:02:39.481142Z"},"content_sha256":"c8ebdeeb6e0d8154715dd6f58a1ff490183caa25d386039dd2d08f34e862b524","schema_version":"1.0","event_id":"sha256:c8ebdeeb6e0d8154715dd6f58a1ff490183caa25d386039dd2d08f34e862b524"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/bundle.json","state_url":"https://pith.science/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/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":"2026-06-02T10:02:39Z","links":{"resolver":"https://pith.science/pith/TWE64CDFWNUUDGKMOCVCRUTLRY","bundle":"https://pith.science/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/bundle.json","state":"https://pith.science/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TWE64CDFWNUUDGKMOCVCRUTLRY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TWE64CDFWNUUDGKMOCVCRUTLRY","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":"feed61757118badbdbb6e4ccbefad6540f29240c57cfead15fea3cf69a43469c","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-02-05T17:43:58Z","title_canon_sha256":"2db5c291818c494e2c1a4cc50ca07a45b5b80fee50143c91f8c457321e4c95c2"},"schema_version":"1.0","source":{"id":"1902.01816","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01816","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01816v2","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01816","created_at":"2026-05-17T23:40:39Z"},{"alias_kind":"pith_short_12","alias_value":"TWE64CDFWNUU","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"TWE64CDFWNUUDGKM","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"TWE64CDF","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:c8ebdeeb6e0d8154715dd6f58a1ff490183caa25d386039dd2d08f34e862b524","target":"graph","created_at":"2026-05-17T23:40:39Z","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":"Inspired by a similar analysis for the vacuum conformal Einstein field equations by Paetz [Ann. H. Poincar\\'e 16, 2059 (2015)], in this article we show how to construct a system of quasilinear wave equations for the geometric fields associated to the conformal Einstein field equations coupled to matter models whose energy-momentum tensor has vanishing trace. In this case, the equation of conservation for the energy-momentum tensor is conformally invariant. Our analysis includes the construction of a subsidiary evolution system which allows to prove the propagation of the constraints. We discus","authors_text":"Adem E. Hursit, Diego A. Carranza, Juan A. Valiente Kroon","cross_cats":["math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-02-05T17:43:58Z","title":"Conformal wave equations for the Einstein-tracefree matter system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01816","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:b018d059df0cdc19a89538cf1e7e35f5445c5e4fe7fad6f8b184927aa48b89f6","target":"record","created_at":"2026-05-17T23:40:39Z","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":"feed61757118badbdbb6e4ccbefad6540f29240c57cfead15fea3cf69a43469c","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-02-05T17:43:58Z","title_canon_sha256":"2db5c291818c494e2c1a4cc50ca07a45b5b80fee50143c91f8c457321e4c95c2"},"schema_version":"1.0","source":{"id":"1902.01816","kind":"arxiv","version":2}},"canonical_sha256":"9d89ee0865b36941994c70aa28d26b8e0e43bf9ba6eca1de8757f0a5e62f8f44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d89ee0865b36941994c70aa28d26b8e0e43bf9ba6eca1de8757f0a5e62f8f44","first_computed_at":"2026-05-17T23:40:39.053846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:39.053846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j141zSSlaplXxUCUXb6sH6NjjJRycOas8O62E+o+I6fwO6p1E2tLSAAv6UrXw80MSKmVtCpIPcdKz+mawULvCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:39.054361Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.01816","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b018d059df0cdc19a89538cf1e7e35f5445c5e4fe7fad6f8b184927aa48b89f6","sha256:c8ebdeeb6e0d8154715dd6f58a1ff490183caa25d386039dd2d08f34e862b524"],"state_sha256":"a1775c02d115162c17c1c9b6be6ee60cb0a79f4e07e2ec6829f13ee76b8fff63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"21R53xXVuALNzM64LVhmpQPF4aBB4zRhg/6NAsODndwqB+BWFz5nrG//1WB4YnFCJduLu8L1SLtF2/rsbS+WAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:02:39.483118Z","bundle_sha256":"4dfc66213783f444d96c98977e3432239b523106c76f4c8fe6c0f6a230561cde"}}