{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:X5WQVKO3W4SSGSJODTFXPCEE2H","short_pith_number":"pith:X5WQVKO3","canonical_record":{"source":{"id":"astro-ph/0702575","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T18:08:25Z","cross_cats_sorted":[],"title_canon_sha256":"dbb33dec3969cd6fdf10b3663b4ba11907b97fc688a113791dd138825193691b","abstract_canon_sha256":"bb6ce347fc0595fca4c3a6d13a8261408d28f54625a814ead33a724fd3a24f79"},"schema_version":"1.0"},"canonical_sha256":"bf6d0aa9dbb72523492e1ccb778884d1c64d761574f41301336195a66c527d78","source":{"kind":"arxiv","id":"astro-ph/0702575","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0702575","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0702575v2","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0702575","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"X5WQVKO3W4SS","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_16","alias_value":"X5WQVKO3W4SSGSJO","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_8","alias_value":"X5WQVKO3","created_at":"2026-07-04T15:03:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:X5WQVKO3W4SSGSJODTFXPCEE2H","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0702575","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T18:08:25Z","cross_cats_sorted":[],"title_canon_sha256":"dbb33dec3969cd6fdf10b3663b4ba11907b97fc688a113791dd138825193691b","abstract_canon_sha256":"bb6ce347fc0595fca4c3a6d13a8261408d28f54625a814ead33a724fd3a24f79"},"schema_version":"1.0"},"canonical_sha256":"bf6d0aa9dbb72523492e1ccb778884d1c64d761574f41301336195a66c527d78","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:03:46.239345Z","signature_b64":"wMUxD3y8z+cnfcSL8UyFXcIiIp1n78sOx93YLbEbf2bq8ZoCl3kORVqRUrANr4DxPOk1gt69zZ81K7iAe3xNAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf6d0aa9dbb72523492e1ccb778884d1c64d761574f41301336195a66c527d78","last_reissued_at":"2026-07-04T15:03:46.238988Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:03:46.238988Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0702575","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":"2026-07-04T15:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tiLXZY8TgbeNd7ikyXJhi1Itwj4tacJ13yF2vt4lUgZnQ52+bImUiZ92rH7PhOtEe3xncvdEoWXsck+LJy3IBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:54:44.026741Z"},"content_sha256":"a6a4e7ff9664fe2ee929eac74b304791e400bee2f909000bd85fc266960f2dc5","schema_version":"1.0","event_id":"sha256:a6a4e7ff9664fe2ee929eac74b304791e400bee2f909000bd85fc266960f2dc5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:X5WQVKO3W4SSGSJODTFXPCEE2H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discreteness effects in simulations of Hot/Warm dark matter","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jie Wang, Simon D. M. White (MPA)","submitted_at":"2007-02-21T18:08:25Z","abstract_excerpt":"In Hot or Warm Dark Matter universes the density fluctuations at early times contain very little power below a characteristic wavelength related inversely to the particle mass. We study how discreteness noise influences the growth of nonlinear structures smaller than this coherence scale in N-body simulations of cosmic structure formation. It has been known for 20 years that HDM simulations in which the initial uniform particle load is a cubic lattice exhibit artifacts related to this lattice. In particular, the filaments which form in such simulations break up into regularly spaced clumps whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0702575","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0702575/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":"2026-07-04T15:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UGOxbEA72gfDDCaWCfCqhX2dGOPEgx15lEOnmnXqBD/FvYKeCgaAOyHwoVS+agXcRo1annnZzK8/oyB2TJLtBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:54:44.027238Z"},"content_sha256":"d45dd78c7c832cc20645563aef5a2c64ec58bfd96dd97563d8a771dc72b65e02","schema_version":"1.0","event_id":"sha256:d45dd78c7c832cc20645563aef5a2c64ec58bfd96dd97563d8a771dc72b65e02"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/bundle.json","state_url":"https://pith.science/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/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":"2026-08-08T02:54:44Z","links":{"resolver":"https://pith.science/pith/X5WQVKO3W4SSGSJODTFXPCEE2H","bundle":"https://pith.science/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/bundle.json","state":"https://pith.science/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X5WQVKO3W4SSGSJODTFXPCEE2H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:X5WQVKO3W4SSGSJODTFXPCEE2H","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":"bb6ce347fc0595fca4c3a6d13a8261408d28f54625a814ead33a724fd3a24f79","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T18:08:25Z","title_canon_sha256":"dbb33dec3969cd6fdf10b3663b4ba11907b97fc688a113791dd138825193691b"},"schema_version":"1.0","source":{"id":"astro-ph/0702575","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0702575","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0702575v2","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0702575","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"X5WQVKO3W4SS","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_16","alias_value":"X5WQVKO3W4SSGSJO","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_8","alias_value":"X5WQVKO3","created_at":"2026-07-04T15:03:46Z"}],"graph_snapshots":[{"event_id":"sha256:d45dd78c7c832cc20645563aef5a2c64ec58bfd96dd97563d8a771dc72b65e02","target":"graph","created_at":"2026-07-04T15:03:46Z","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/astro-ph/0702575/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In Hot or Warm Dark Matter universes the density fluctuations at early times contain very little power below a characteristic wavelength related inversely to the particle mass. We study how discreteness noise influences the growth of nonlinear structures smaller than this coherence scale in N-body simulations of cosmic structure formation. It has been known for 20 years that HDM simulations in which the initial uniform particle load is a cubic lattice exhibit artifacts related to this lattice. In particular, the filaments which form in such simulations break up into regularly spaced clumps whi","authors_text":"Jie Wang, Simon D. M. White (MPA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T18:08:25Z","title":"Discreteness effects in simulations of Hot/Warm dark matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0702575","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:a6a4e7ff9664fe2ee929eac74b304791e400bee2f909000bd85fc266960f2dc5","target":"record","created_at":"2026-07-04T15:03:46Z","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":"bb6ce347fc0595fca4c3a6d13a8261408d28f54625a814ead33a724fd3a24f79","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T18:08:25Z","title_canon_sha256":"dbb33dec3969cd6fdf10b3663b4ba11907b97fc688a113791dd138825193691b"},"schema_version":"1.0","source":{"id":"astro-ph/0702575","kind":"arxiv","version":2}},"canonical_sha256":"bf6d0aa9dbb72523492e1ccb778884d1c64d761574f41301336195a66c527d78","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf6d0aa9dbb72523492e1ccb778884d1c64d761574f41301336195a66c527d78","first_computed_at":"2026-07-04T15:03:46.238988Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:03:46.238988Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wMUxD3y8z+cnfcSL8UyFXcIiIp1n78sOx93YLbEbf2bq8ZoCl3kORVqRUrANr4DxPOk1gt69zZ81K7iAe3xNAA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:03:46.239345Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0702575","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6a4e7ff9664fe2ee929eac74b304791e400bee2f909000bd85fc266960f2dc5","sha256:d45dd78c7c832cc20645563aef5a2c64ec58bfd96dd97563d8a771dc72b65e02"],"state_sha256":"cff324afbbbfbeea0c6c437c64a94f8831fe6fbc1ad12334e0eab7d2f8c5fa41"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SUZJ5yu6HCN4RPrf7bAKLlJayzCw0+Qyh8nk/dLrXwbm198mabrpJv0A5QBmRr0x0xtKVhhY8LBesj2iI2i9Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T02:54:44.032290Z","bundle_sha256":"3403b51903898045239f996bd5187e733223332f09bf0e3cf8fde905ab8788a8"}}