{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7H3JBMOELNY25VWO637HLZDX6R","short_pith_number":"pith:7H3JBMOE","canonical_record":{"source":{"id":"2606.31035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-30T02:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"535010be0c2f7f8897be6d81da48134745c481f55bf414423a8fd3ffa94f3b2c","abstract_canon_sha256":"8886344dd21b6ca3051ba0bb4716288701074e7f7e23f59fc6030b4d956360b0"},"schema_version":"1.0"},"canonical_sha256":"f9f690b1c45b71aed6cef6fe75e477f44a7c52f269a393890da4e179e855d069","source":{"kind":"arxiv","id":"2606.31035","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31035","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31035v1","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31035","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_12","alias_value":"7H3JBMOELNY2","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_16","alias_value":"7H3JBMOELNY25VWO","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_8","alias_value":"7H3JBMOE","created_at":"2026-07-01T01:17:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7H3JBMOELNY25VWO637HLZDX6R","target":"record","payload":{"canonical_record":{"source":{"id":"2606.31035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-30T02:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"535010be0c2f7f8897be6d81da48134745c481f55bf414423a8fd3ffa94f3b2c","abstract_canon_sha256":"8886344dd21b6ca3051ba0bb4716288701074e7f7e23f59fc6030b4d956360b0"},"schema_version":"1.0"},"canonical_sha256":"f9f690b1c45b71aed6cef6fe75e477f44a7c52f269a393890da4e179e855d069","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-01T01:17:27.012444Z","signature_b64":"4C+jagWP7lQLFE1iKXIPg8SBm29JmV4uj34G5o9AiBrr7HY488R4x7oMEcpMOXOFwVaNv10JWCMhTZlH0Fj/BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f9f690b1c45b71aed6cef6fe75e477f44a7c52f269a393890da4e179e855d069","last_reissued_at":"2026-07-01T01:17:27.011968Z","signature_status":"signed_v1","first_computed_at":"2026-07-01T01:17:27.011968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.31035","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-01T01:17:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y0MWTdRnNXPQpS5DicpbcZb0dmfmXWmnjyLBgsvfnB2QiNrmzd+jRmz3VTnKMKPEprJc3k0wAQNvxIdDtSRaDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T22:10:59.742302Z"},"content_sha256":"31ee4d4fd5e5dc362f99e80c8eb9f7741743335447612ca571534346dd5da869","schema_version":"1.0","event_id":"sha256:31ee4d4fd5e5dc362f99e80c8eb9f7741743335447612ca571534346dd5da869"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7H3JBMOELNY25VWO637HLZDX6R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonlinear Landau Collisions Without Collision Tensors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"B. Herfray, C. Vega, R. Jorge, V. Zhdankin","submitted_at":"2026-06-30T02:06:51Z","abstract_excerpt":"Far-from-equilibrium plasmas require nonlinear Coulomb collisions, but direct three-dimensional Hermite discretization of the Landau operator needs an impractical dense tensor. By porting quantum chemistry Coulomb-integral methods, we reduce the six-dimensional integrals to one-center Coulomb moments and separable exponential-sum contractions. This gives a four-order-of-magnitude working-memory reduction and enables nonlinear relaxation tests. Numerical simulations preserve invariants and show that finite-basis linearization changes relaxation and produces a fourfold angular error."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31035","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.31035/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":"2026-07-01T01:17:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jcFFgq7ipsxGgJF4Y03Nq6Ixrrb4MtUUI+WuCV7JquwZJSEgbkqVzfp5py+eBWLt1LuR+8YoTFxgkh+yRERUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T22:10:59.742677Z"},"content_sha256":"ab3f3adde71013c0cb356e9da489f8d4ef7ed8763609919f0540d981819973ae","schema_version":"1.0","event_id":"sha256:ab3f3adde71013c0cb356e9da489f8d4ef7ed8763609919f0540d981819973ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7H3JBMOELNY25VWO637HLZDX6R/bundle.json","state_url":"https://pith.science/pith/7H3JBMOELNY25VWO637HLZDX6R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7H3JBMOELNY25VWO637HLZDX6R/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":"2026-07-01T22:10:59Z","links":{"resolver":"https://pith.science/pith/7H3JBMOELNY25VWO637HLZDX6R","bundle":"https://pith.science/pith/7H3JBMOELNY25VWO637HLZDX6R/bundle.json","state":"https://pith.science/pith/7H3JBMOELNY25VWO637HLZDX6R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7H3JBMOELNY25VWO637HLZDX6R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7H3JBMOELNY25VWO637HLZDX6R","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":"8886344dd21b6ca3051ba0bb4716288701074e7f7e23f59fc6030b4d956360b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-30T02:06:51Z","title_canon_sha256":"535010be0c2f7f8897be6d81da48134745c481f55bf414423a8fd3ffa94f3b2c"},"schema_version":"1.0","source":{"id":"2606.31035","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31035","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31035v1","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31035","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_12","alias_value":"7H3JBMOELNY2","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_16","alias_value":"7H3JBMOELNY25VWO","created_at":"2026-07-01T01:17:27Z"},{"alias_kind":"pith_short_8","alias_value":"7H3JBMOE","created_at":"2026-07-01T01:17:27Z"}],"graph_snapshots":[{"event_id":"sha256:ab3f3adde71013c0cb356e9da489f8d4ef7ed8763609919f0540d981819973ae","target":"graph","created_at":"2026-07-01T01:17:27Z","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/2606.31035/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Far-from-equilibrium plasmas require nonlinear Coulomb collisions, but direct three-dimensional Hermite discretization of the Landau operator needs an impractical dense tensor. By porting quantum chemistry Coulomb-integral methods, we reduce the six-dimensional integrals to one-center Coulomb moments and separable exponential-sum contractions. This gives a four-order-of-magnitude working-memory reduction and enables nonlinear relaxation tests. Numerical simulations preserve invariants and show that finite-basis linearization changes relaxation and produces a fourfold angular error.","authors_text":"B. Herfray, C. Vega, R. Jorge, V. Zhdankin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-30T02:06:51Z","title":"Nonlinear Landau Collisions Without Collision Tensors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31035","kind":"arxiv","version":1},"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":"sha256:31ee4d4fd5e5dc362f99e80c8eb9f7741743335447612ca571534346dd5da869","target":"record","created_at":"2026-07-01T01:17:27Z","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":"8886344dd21b6ca3051ba0bb4716288701074e7f7e23f59fc6030b4d956360b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-30T02:06:51Z","title_canon_sha256":"535010be0c2f7f8897be6d81da48134745c481f55bf414423a8fd3ffa94f3b2c"},"schema_version":"1.0","source":{"id":"2606.31035","kind":"arxiv","version":1}},"canonical_sha256":"f9f690b1c45b71aed6cef6fe75e477f44a7c52f269a393890da4e179e855d069","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f9f690b1c45b71aed6cef6fe75e477f44a7c52f269a393890da4e179e855d069","first_computed_at":"2026-07-01T01:17:27.011968Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-01T01:17:27.011968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4C+jagWP7lQLFE1iKXIPg8SBm29JmV4uj34G5o9AiBrr7HY488R4x7oMEcpMOXOFwVaNv10JWCMhTZlH0Fj/BQ==","signature_status":"signed_v1","signed_at":"2026-07-01T01:17:27.012444Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.31035","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31ee4d4fd5e5dc362f99e80c8eb9f7741743335447612ca571534346dd5da869","sha256:ab3f3adde71013c0cb356e9da489f8d4ef7ed8763609919f0540d981819973ae"],"state_sha256":"3dd486b6f9d772cea6069fc83f34467db2f735ff7f342442e1e9b846924215cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2bwtnrRozbtg3gSUlrdSwTq7lLLi6O4AvNDvYZbzW3hC1YU1mZ8SEQtSdcBw5jjxwzkvMSdUmNLA+2LIPmvZCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T22:10:59.744591Z","bundle_sha256":"04b4c139ebe9e008ddb716ce0c778e2a96f22beea66e9b1ec0c25db8d7f5de11"}}