{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:KWEAPP454XSDNYPFJZFUB3U3BS","short_pith_number":"pith:KWEAPP45","canonical_record":{"source":{"id":"1710.06829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-10-18T17:06:18Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"47ced1f5bc2c3d7ddd37c1c614b9b58d6678ebf879f8817fd412b24ce01c6bf9","abstract_canon_sha256":"78996372de60398339721ac79b91aecffe82d560c34c4790fd626535e3c4a438"},"schema_version":"1.0"},"canonical_sha256":"558807bf9de5e436e1e54e4b40ee9b0c905fbddf431c6c1cb2e5ab14b1143c51","source":{"kind":"arxiv","id":"1710.06829","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.06829","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"arxiv_version","alias_value":"1710.06829v1","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.06829","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"pith_short_12","alias_value":"KWEAPP454XSD","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"KWEAPP454XSDNYPF","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"KWEAPP45","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:KWEAPP454XSDNYPFJZFUB3U3BS","target":"record","payload":{"canonical_record":{"source":{"id":"1710.06829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-10-18T17:06:18Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"47ced1f5bc2c3d7ddd37c1c614b9b58d6678ebf879f8817fd412b24ce01c6bf9","abstract_canon_sha256":"78996372de60398339721ac79b91aecffe82d560c34c4790fd626535e3c4a438"},"schema_version":"1.0"},"canonical_sha256":"558807bf9de5e436e1e54e4b40ee9b0c905fbddf431c6c1cb2e5ab14b1143c51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:35.116247Z","signature_b64":"G/WzkgXjwXTA4hxcEfFJWRGQ9L4oPwXXfuv0fqpTnVmdmYZNCSthpCJf1yOIxffEZ4uLrfx7LFiz0tumBldLCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"558807bf9de5e436e1e54e4b40ee9b0c905fbddf431c6c1cb2e5ab14b1143c51","last_reissued_at":"2026-05-18T00:24:35.115877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:35.115877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.06829","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":"2026-05-18T00:24:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cputuewj4FoeOKH5CdMtDxaep2ggM9qSq0OcCCvKERES9YztzLtWdJxmaAHhxRnbP+Y8F19Fi8dXJAd0yF52Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:13:15.306214Z"},"content_sha256":"3405a8990ecb5880b5e98e065272b2c08c0363b8a54b43f6262edb4b1cca9b86","schema_version":"1.0","event_id":"sha256:3405a8990ecb5880b5e98e065272b2c08c0363b8a54b43f6262edb4b1cca9b86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:KWEAPP454XSDNYPFJZFUB3U3BS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Systematic Approach to Numerical Dispersion in Maxwell Solvers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Alexander Blinne, David Schinkel, Matt Zepf, Nina Elkina, Sergey Rykovanov, Stephan Kuschel","submitted_at":"2017-10-18T17:06:18Z","abstract_excerpt":"The finite-difference time-domain (FDTD) method is a well established method for solving the time evolution of Maxwell's equations. Unfortunately the scheme introduces numerical dispersion and therefore phase and group velocities which deviate from the correct values. The solution to Maxwell's equations in more than one dimension results in non-physical predictions such as numerical dispersion or numerical Cherenkov radiation emitted by a relativistic electron beam propagating in vacuum.\n  Improved solvers, which keep the staggered Yee-type grid for electric and magnetic fields, generally modi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.06829","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":""},"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":"2026-05-18T00:24:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PJocFWHexxgEHd3KOg5Uxb6R1IBeFhpfJZEpIUZmpSFr8FiQrUQk4g6yAnmA+5bWOw1HdvNHIDfrNHHuvh+gAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:13:15.306920Z"},"content_sha256":"ac1773d0ca591dafd993ae0de0aac92ccfaf725116380365dddd8ad69b6d7fdc","schema_version":"1.0","event_id":"sha256:ac1773d0ca591dafd993ae0de0aac92ccfaf725116380365dddd8ad69b6d7fdc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KWEAPP454XSDNYPFJZFUB3U3BS/bundle.json","state_url":"https://pith.science/pith/KWEAPP454XSDNYPFJZFUB3U3BS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KWEAPP454XSDNYPFJZFUB3U3BS/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":"2026-05-26T18:13:15Z","links":{"resolver":"https://pith.science/pith/KWEAPP454XSDNYPFJZFUB3U3BS","bundle":"https://pith.science/pith/KWEAPP454XSDNYPFJZFUB3U3BS/bundle.json","state":"https://pith.science/pith/KWEAPP454XSDNYPFJZFUB3U3BS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KWEAPP454XSDNYPFJZFUB3U3BS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:KWEAPP454XSDNYPFJZFUB3U3BS","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":"78996372de60398339721ac79b91aecffe82d560c34c4790fd626535e3c4a438","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-10-18T17:06:18Z","title_canon_sha256":"47ced1f5bc2c3d7ddd37c1c614b9b58d6678ebf879f8817fd412b24ce01c6bf9"},"schema_version":"1.0","source":{"id":"1710.06829","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.06829","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"arxiv_version","alias_value":"1710.06829v1","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.06829","created_at":"2026-05-18T00:24:35Z"},{"alias_kind":"pith_short_12","alias_value":"KWEAPP454XSD","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"KWEAPP454XSDNYPF","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"KWEAPP45","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:ac1773d0ca591dafd993ae0de0aac92ccfaf725116380365dddd8ad69b6d7fdc","target":"graph","created_at":"2026-05-18T00:24:35Z","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 finite-difference time-domain (FDTD) method is a well established method for solving the time evolution of Maxwell's equations. Unfortunately the scheme introduces numerical dispersion and therefore phase and group velocities which deviate from the correct values. The solution to Maxwell's equations in more than one dimension results in non-physical predictions such as numerical dispersion or numerical Cherenkov radiation emitted by a relativistic electron beam propagating in vacuum.\n  Improved solvers, which keep the staggered Yee-type grid for electric and magnetic fields, generally modi","authors_text":"Alexander Blinne, David Schinkel, Matt Zepf, Nina Elkina, Sergey Rykovanov, Stephan Kuschel","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-10-18T17:06:18Z","title":"A Systematic Approach to Numerical Dispersion in Maxwell Solvers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.06829","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":"sha256:3405a8990ecb5880b5e98e065272b2c08c0363b8a54b43f6262edb4b1cca9b86","target":"record","created_at":"2026-05-18T00:24:35Z","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":"78996372de60398339721ac79b91aecffe82d560c34c4790fd626535e3c4a438","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-10-18T17:06:18Z","title_canon_sha256":"47ced1f5bc2c3d7ddd37c1c614b9b58d6678ebf879f8817fd412b24ce01c6bf9"},"schema_version":"1.0","source":{"id":"1710.06829","kind":"arxiv","version":1}},"canonical_sha256":"558807bf9de5e436e1e54e4b40ee9b0c905fbddf431c6c1cb2e5ab14b1143c51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"558807bf9de5e436e1e54e4b40ee9b0c905fbddf431c6c1cb2e5ab14b1143c51","first_computed_at":"2026-05-18T00:24:35.115877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:35.115877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G/WzkgXjwXTA4hxcEfFJWRGQ9L4oPwXXfuv0fqpTnVmdmYZNCSthpCJf1yOIxffEZ4uLrfx7LFiz0tumBldLCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:35.116247Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.06829","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3405a8990ecb5880b5e98e065272b2c08c0363b8a54b43f6262edb4b1cca9b86","sha256:ac1773d0ca591dafd993ae0de0aac92ccfaf725116380365dddd8ad69b6d7fdc"],"state_sha256":"8f04ba8c7dc07c4eeaa2b6b89587fb4a9a3e6168a347359958d42153df6fee0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vLqCHoZqPkUgW/PLwk6t+f5fWaiRf7qnSq+O+LMGzW6jKQje/lo5AfWmoP6MTJQOshvZQcn5fiHicZvzoH0rBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:13:15.310820Z","bundle_sha256":"20016316927720ffd3375cdb0d2467b747f31c059460d16cc81c6c27bebe4055"}}