{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ODZEW5IED4KXGCW364CQ2SACHN","short_pith_number":"pith:ODZEW5IE","canonical_record":{"source":{"id":"1408.1346","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-08-06T16:32:19Z","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"title_canon_sha256":"2932347862954c303617de809cb95a4c873de2e3c907c6f4a2e40b36e74b4b33","abstract_canon_sha256":"affa65909c6bd27019f469d7910254e98a3a63382096c3babe322e01c7e4b5f5"},"schema_version":"1.0"},"canonical_sha256":"70f24b75041f15730adbf7050d48023b78fd87085b764f5975a10a345f8d3998","source":{"kind":"arxiv","id":"1408.1346","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.1346","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"1408.1346v2","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.1346","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"ODZEW5IED4KX","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"ODZEW5IED4KXGCW3","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"ODZEW5IE","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ODZEW5IED4KXGCW364CQ2SACHN","target":"record","payload":{"canonical_record":{"source":{"id":"1408.1346","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-08-06T16:32:19Z","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"title_canon_sha256":"2932347862954c303617de809cb95a4c873de2e3c907c6f4a2e40b36e74b4b33","abstract_canon_sha256":"affa65909c6bd27019f469d7910254e98a3a63382096c3babe322e01c7e4b5f5"},"schema_version":"1.0"},"canonical_sha256":"70f24b75041f15730adbf7050d48023b78fd87085b764f5975a10a345f8d3998","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:25.315724Z","signature_b64":"qXGA5fWq2gDmci/e8VhJX82JLBNytpNqKz3ouc8aDZcJMElvEiKPyJS/5gxMww58FrJIODdgpn3+VwLXRypSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70f24b75041f15730adbf7050d48023b78fd87085b764f5975a10a345f8d3998","last_reissued_at":"2026-05-18T02:39:25.315338Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:25.315338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.1346","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":"2026-05-18T02:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3GscUdy0VLYgmzC0sQNG9d3e9nwq6uEYkHXpPoAXxuIVfgFbqZofa5eU1/MOpR54EUiQNU1IziwGVCyRmknBAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:51:21.793790Z"},"content_sha256":"2e992fe44cf62eb0a30fb0bdc9720f7492644c168f37a53749cb10a1f4c5cfc2","schema_version":"1.0","event_id":"sha256:2e992fe44cf62eb0a30fb0bdc9720f7492644c168f37a53749cb10a1f4c5cfc2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ODZEW5IED4KXGCW364CQ2SACHN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variational integration for ideal magnetohydrodynamics with built-in advection equations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph","physics.flu-dyn"],"primary_cat":"physics.plasm-ph","authors_text":"A. Bhattacharjee, Hong Qin, J. W. Burby, Yao Zhou","submitted_at":"2014-08-06T16:32:19Z","abstract_excerpt":"Newcomb's Lagrangian for ideal magnetohydrodynamics (MHD) in Lagrangian labeling is discretized using discrete exterior calculus. Variational integrators for ideal MHD are derived thereafter. Besides being symplectic and momentum-preserving, the schemes inherit built-in advection equations from Newcomb's formulation, and therefore avoid solving them and the accompanying error and dissipation. We implement the method in 2D and show that numerical reconnection does not take place when singular current sheets are present. We then apply it to studying the dynamics of the ideal coalescence instabil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.1346","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":"2026-05-18T02:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dr6+L9XGgtS0hGkCcyOMu3j1+U9HSfSJWCuggBpt2ctBeqma5le6mbZVZ0XJ2NIQ3Oft/62zMtphpotaXRSeCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:51:21.794418Z"},"content_sha256":"bbd3ea905c4ce0594678220512654fdc3975b652758689999a22cd265fa6cab7","schema_version":"1.0","event_id":"sha256:bbd3ea905c4ce0594678220512654fdc3975b652758689999a22cd265fa6cab7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODZEW5IED4KXGCW364CQ2SACHN/bundle.json","state_url":"https://pith.science/pith/ODZEW5IED4KXGCW364CQ2SACHN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODZEW5IED4KXGCW364CQ2SACHN/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":"2026-05-27T11:51:21Z","links":{"resolver":"https://pith.science/pith/ODZEW5IED4KXGCW364CQ2SACHN","bundle":"https://pith.science/pith/ODZEW5IED4KXGCW364CQ2SACHN/bundle.json","state":"https://pith.science/pith/ODZEW5IED4KXGCW364CQ2SACHN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODZEW5IED4KXGCW364CQ2SACHN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ODZEW5IED4KXGCW364CQ2SACHN","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":"affa65909c6bd27019f469d7910254e98a3a63382096c3babe322e01c7e4b5f5","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-08-06T16:32:19Z","title_canon_sha256":"2932347862954c303617de809cb95a4c873de2e3c907c6f4a2e40b36e74b4b33"},"schema_version":"1.0","source":{"id":"1408.1346","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.1346","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"1408.1346v2","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.1346","created_at":"2026-05-18T02:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"ODZEW5IED4KX","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"ODZEW5IED4KXGCW3","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"ODZEW5IE","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:bbd3ea905c4ce0594678220512654fdc3975b652758689999a22cd265fa6cab7","target":"graph","created_at":"2026-05-18T02:39:25Z","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":"Newcomb's Lagrangian for ideal magnetohydrodynamics (MHD) in Lagrangian labeling is discretized using discrete exterior calculus. Variational integrators for ideal MHD are derived thereafter. Besides being symplectic and momentum-preserving, the schemes inherit built-in advection equations from Newcomb's formulation, and therefore avoid solving them and the accompanying error and dissipation. We implement the method in 2D and show that numerical reconnection does not take place when singular current sheets are present. We then apply it to studying the dynamics of the ideal coalescence instabil","authors_text":"A. Bhattacharjee, Hong Qin, J. W. Burby, Yao Zhou","cross_cats":["physics.comp-ph","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-08-06T16:32:19Z","title":"Variational integration for ideal magnetohydrodynamics with built-in advection equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.1346","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":"sha256:2e992fe44cf62eb0a30fb0bdc9720f7492644c168f37a53749cb10a1f4c5cfc2","target":"record","created_at":"2026-05-18T02:39:25Z","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":"affa65909c6bd27019f469d7910254e98a3a63382096c3babe322e01c7e4b5f5","cross_cats_sorted":["physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-08-06T16:32:19Z","title_canon_sha256":"2932347862954c303617de809cb95a4c873de2e3c907c6f4a2e40b36e74b4b33"},"schema_version":"1.0","source":{"id":"1408.1346","kind":"arxiv","version":2}},"canonical_sha256":"70f24b75041f15730adbf7050d48023b78fd87085b764f5975a10a345f8d3998","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70f24b75041f15730adbf7050d48023b78fd87085b764f5975a10a345f8d3998","first_computed_at":"2026-05-18T02:39:25.315338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:25.315338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qXGA5fWq2gDmci/e8VhJX82JLBNytpNqKz3ouc8aDZcJMElvEiKPyJS/5gxMww58FrJIODdgpn3+VwLXRypSAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:25.315724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.1346","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e992fe44cf62eb0a30fb0bdc9720f7492644c168f37a53749cb10a1f4c5cfc2","sha256:bbd3ea905c4ce0594678220512654fdc3975b652758689999a22cd265fa6cab7"],"state_sha256":"8993adfbdaa24de96d25b4ed3fbb0c1569b19ec72fe0aa64f4262586d5a37ff4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LIf0c9SX+jUqG0twbKxFY5ePEhUeMcH/VUNeBV6BHiEEdFT/e/MLMmMc0vHGfysGDDxzOXxvxk0WgnNHhBavAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T11:51:21.797970Z","bundle_sha256":"9b154a2189aad2549b03e8b89790b197b4f1a1fa7871b65b96250bb585dce9b4"}}