{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2000:ERXBWIVPRDAM4C6IE6RITGLI2V","short_pith_number":"pith:ERXBWIVP","schema_version":"1.0","canonical_sha256":"246e1b22af88c0ce0bc827a2899968d54126668bf7c3b599000f3cda2b0ae742","source":{"kind":"arxiv","id":"astro-ph/0004249","version":2},"attestation_state":"computed","paper":{"title":"A modified parallel tree code for N-body simulation of the Large Scale Structure of the Universe","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"M. Gambera, U. Becciani, V. Antonuccio-Delogu","submitted_at":"2000-04-18T09:29:55Z","abstract_excerpt":"N-body codes to perform simulations of the origin and evolution of the Large Scale Structure of the Universe have improved significantly over the past decade both in terms of the resolution achieved and of reduction of the CPU time. However, state-of-the-art N-body codes hardly allow one to deal with particle numbers larger than a few 10^7, even on the largest parallel systems. In order to allow simulations with larger resolution, we have first re-considered the grouping strategy as described in Barnes (1990) (hereafter B90) and applied it with some modifications to our WDSH-PT (Work and Data "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/0004249","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-18T09:29:55Z","cross_cats_sorted":[],"title_canon_sha256":"15e0b1d32fdbab20db17d28a08202529d521470c77890f736365c252195e3550","abstract_canon_sha256":"dc07f072ef63123b745cee359d01f4e89d9eb3e1a19a31e6b6e8a01098090921"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:16:19.402451Z","signature_b64":"zfzeVt9vYnvDeXXMSm1kqFMz+NNcQdJ7VxYURWNnv7J6Bv12CBzvZ7VK7SWFZlAbGrmdhoKkYv3TKlcHrgqrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"246e1b22af88c0ce0bc827a2899968d54126668bf7c3b599000f3cda2b0ae742","last_reissued_at":"2026-07-04T16:16:19.402008Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:16:19.402008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A modified parallel tree code for N-body simulation of the Large Scale Structure of the Universe","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"M. Gambera, U. Becciani, V. Antonuccio-Delogu","submitted_at":"2000-04-18T09:29:55Z","abstract_excerpt":"N-body codes to perform simulations of the origin and evolution of the Large Scale Structure of the Universe have improved significantly over the past decade both in terms of the resolution achieved and of reduction of the CPU time. However, state-of-the-art N-body codes hardly allow one to deal with particle numbers larger than a few 10^7, even on the largest parallel systems. In order to allow simulations with larger resolution, we have first re-considered the grouping strategy as described in Barnes (1990) (hereafter B90) and applied it with some modifications to our WDSH-PT (Work and Data "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004249","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/0004249/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004249","created_at":"2026-07-04T16:16:19.402067+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004249v2","created_at":"2026-07-04T16:16:19.402067+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004249","created_at":"2026-07-04T16:16:19.402067+00:00"},{"alias_kind":"pith_short_12","alias_value":"ERXBWIVPRDAM","created_at":"2026-07-04T16:16:19.402067+00:00"},{"alias_kind":"pith_short_16","alias_value":"ERXBWIVPRDAM4C6I","created_at":"2026-07-04T16:16:19.402067+00:00"},{"alias_kind":"pith_short_8","alias_value":"ERXBWIVP","created_at":"2026-07-04T16:16:19.402067+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V","json":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V.json","graph_json":"https://pith.science/api/pith-number/ERXBWIVPRDAM4C6IE6RITGLI2V/graph.json","events_json":"https://pith.science/api/pith-number/ERXBWIVPRDAM4C6IE6RITGLI2V/events.json","paper":"https://pith.science/paper/ERXBWIVP"},"agent_actions":{"view_html":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V","download_json":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V.json","view_paper":"https://pith.science/paper/ERXBWIVP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0004249&json=true","fetch_graph":"https://pith.science/api/pith-number/ERXBWIVPRDAM4C6IE6RITGLI2V/graph.json","fetch_events":"https://pith.science/api/pith-number/ERXBWIVPRDAM4C6IE6RITGLI2V/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V/action/storage_attestation","attest_author":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V/action/author_attestation","sign_citation":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V/action/citation_signature","submit_replication":"https://pith.science/pith/ERXBWIVPRDAM4C6IE6RITGLI2V/action/replication_record"}},"created_at":"2026-07-04T16:16:19.402067+00:00","updated_at":"2026-07-04T16:16:19.402067+00:00"}