{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:LITMRDNHCJN5QWFSQM2MQHZH5C","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":"b816918928d37c10607cc93d9427e2ff354e4cf5c0e9a317f590e16304128813","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-03-12T20:22:15Z","title_canon_sha256":"95f0848944bd6f943048ad7860ff0d5394d554be908a6a4a433c4aaf11a893fa"},"schema_version":"1.0","source":{"id":"astro-ph/9703084","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9703084","created_at":"2026-05-18T02:40:35Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9703084v1","created_at":"2026-05-18T02:40:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9703084","created_at":"2026-05-18T02:40:35Z"},{"alias_kind":"pith_short_12","alias_value":"LITMRDNHCJN5","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"LITMRDNHCJN5QWFS","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"LITMRDNH","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:f7cb3494fca7fe576be1156a53c9b50ac9ba6d60d956a0468816dbbccafef6ba","target":"graph","created_at":"2026-05-18T02:40:35Z","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":"We present a fast algorithm for generating full sky, high resolution ($\\sim 5'$) simulations of the CMB anisotropy pattern. We also discuss the inverse problem, that of evaluating from such a map the full set of $a_{\\ell m}$'s and the spectral coefficients $C_\\ell$. We show that using an Equidistant Cylindrical Projection of the sky substantially speeds up the calculations. Thus, generating and/or inverting a full sky, high resolution map can be easily achieved with present day computer technology.","authors_text":"Nicola Vittorio, Paolo Natoli, Pio Francesco Muciaccia","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-03-12T20:22:15Z","title":"Fast Spherical Harmonic Analysis: a quick algorithm for generating and/or inverting full sky, high resolution CMB Anisotropy maps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9703084","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":"sha256:039c5acd0adf353953e3588b514e79cda1dcd257e422413f4e41ede885c0fa61","target":"record","created_at":"2026-05-18T02:40:35Z","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":"b816918928d37c10607cc93d9427e2ff354e4cf5c0e9a317f590e16304128813","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-03-12T20:22:15Z","title_canon_sha256":"95f0848944bd6f943048ad7860ff0d5394d554be908a6a4a433c4aaf11a893fa"},"schema_version":"1.0","source":{"id":"astro-ph/9703084","kind":"arxiv","version":1}},"canonical_sha256":"5a26c88da7125bd858b28334c81f27e89fd25ac26e562bd0dcf631f9487dc15c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a26c88da7125bd858b28334c81f27e89fd25ac26e562bd0dcf631f9487dc15c","first_computed_at":"2026-05-18T02:40:35.212749Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:35.212749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bQmXGpK1BE3vKd4Vjwi87nh3Qi0rU56HdX2H1XD0Zi9yQuUoxsLqqco9zrGjBj0ZM22OJpuNEmA2hO9oarozAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:35.213265Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9703084","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:039c5acd0adf353953e3588b514e79cda1dcd257e422413f4e41ede885c0fa61","sha256:f7cb3494fca7fe576be1156a53c9b50ac9ba6d60d956a0468816dbbccafef6ba"],"state_sha256":"799f600e811c90b5867be7fbb4265bbfe27b1a6e07ca80d37826d48b57461687"}