{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3ZE7XGOMEH6Z5QMHZJ53YJIWAI","short_pith_number":"pith:3ZE7XGOM","canonical_record":{"source":{"id":"1205.3984","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T17:03:28Z","cross_cats_sorted":[],"title_canon_sha256":"e22cecf72a5b7c122bd0e60513acd2a68e41219f898e6de2d97979c0a6a94696","abstract_canon_sha256":"a284dbfd462e66ccc4a60dc410838a706adbb04ef1233c69aeaf482b3ecea656"},"schema_version":"1.0"},"canonical_sha256":"de49fb99cc21fd9ec187ca7bbc2516021e6ba8f1587a5c9ad0c833f8a66cebe7","source":{"kind":"arxiv","id":"1205.3984","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3984","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3984v3","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3984","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"pith_short_12","alias_value":"3ZE7XGOMEH6Z","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"3ZE7XGOMEH6Z5QMH","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"3ZE7XGOM","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3ZE7XGOMEH6Z5QMHZJ53YJIWAI","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3984","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T17:03:28Z","cross_cats_sorted":[],"title_canon_sha256":"e22cecf72a5b7c122bd0e60513acd2a68e41219f898e6de2d97979c0a6a94696","abstract_canon_sha256":"a284dbfd462e66ccc4a60dc410838a706adbb04ef1233c69aeaf482b3ecea656"},"schema_version":"1.0"},"canonical_sha256":"de49fb99cc21fd9ec187ca7bbc2516021e6ba8f1587a5c9ad0c833f8a66cebe7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:26.029212Z","signature_b64":"p2lCoEj7XAd4NkVc2SYgGdPh5mNQzvm+IfPGv6MSBJwZUKqGl4qkMfSa4Sdo8hCNf1Sj6MlGucRuCNhpN/OmAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de49fb99cc21fd9ec187ca7bbc2516021e6ba8f1587a5c9ad0c833f8a66cebe7","last_reissued_at":"2026-05-18T01:57:26.028666Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:26.028666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3984","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kX1hD+m+HgixbluXv/5toqqTiDWqg+F4U+D1gtBtz4U8uSAJtdCXjvHxlVBA6kla9F+Fp7ruFBoxD/7gNGBTCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:56:30.083004Z"},"content_sha256":"b0026db8e48a9f65bb224847eaf9a1b0aeda8922be86a2caf3893132353073be","schema_version":"1.0","event_id":"sha256:b0026db8e48a9f65bb224847eaf9a1b0aeda8922be86a2caf3893132353073be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3ZE7XGOMEH6Z5QMHZJ53YJIWAI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Validity of Cosmological Fisher Matrix Forecasts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Jochen Weller, Laura Wolz, Martin Kilbinger, Tommaso Giannantonio","submitted_at":"2012-05-17T17:03:28Z","abstract_excerpt":"We present a comparison of Fisher matrix forecasts for cosmological probes with Monte Carlo Markov Chain (MCMC) posterior likelihood estimation methods. We analyse the performance of future Dark Energy Task Force (DETF) stage-III and stage- IV dark-energy surveys using supernovae, baryon acoustic oscillations and weak lensing as probes. We concentrate in particular on the dark-energy equation of state parameters w0 and wa. For purely geometrical probes, and especially when marginalising over wa, we find considerable disagreement between the two methods, since in this case the Fisher matrix can"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3984","kind":"arxiv","version":3},"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":"2026-05-18T01:57:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7JN1x2a5I7yMgVk2ZXRaYME5s4aUrancwxFFz/D/HPfIyuhgfTCPvBF14tpW+6v5m6h16epBPDzekzP10YEZCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:56:30.083715Z"},"content_sha256":"a0a5de74ee59a99afa1152b3025d56608c5c38ab5bc3ea99ea77928501a38bfd","schema_version":"1.0","event_id":"sha256:a0a5de74ee59a99afa1152b3025d56608c5c38ab5bc3ea99ea77928501a38bfd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/bundle.json","state_url":"https://pith.science/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/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":"2026-05-30T20:56:30Z","links":{"resolver":"https://pith.science/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI","bundle":"https://pith.science/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/bundle.json","state":"https://pith.science/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ZE7XGOMEH6Z5QMHZJ53YJIWAI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3ZE7XGOMEH6Z5QMHZJ53YJIWAI","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":"a284dbfd462e66ccc4a60dc410838a706adbb04ef1233c69aeaf482b3ecea656","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T17:03:28Z","title_canon_sha256":"e22cecf72a5b7c122bd0e60513acd2a68e41219f898e6de2d97979c0a6a94696"},"schema_version":"1.0","source":{"id":"1205.3984","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3984","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3984v3","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3984","created_at":"2026-05-18T01:57:26Z"},{"alias_kind":"pith_short_12","alias_value":"3ZE7XGOMEH6Z","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"3ZE7XGOMEH6Z5QMH","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"3ZE7XGOM","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:a0a5de74ee59a99afa1152b3025d56608c5c38ab5bc3ea99ea77928501a38bfd","target":"graph","created_at":"2026-05-18T01:57:26Z","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 comparison of Fisher matrix forecasts for cosmological probes with Monte Carlo Markov Chain (MCMC) posterior likelihood estimation methods. We analyse the performance of future Dark Energy Task Force (DETF) stage-III and stage- IV dark-energy surveys using supernovae, baryon acoustic oscillations and weak lensing as probes. We concentrate in particular on the dark-energy equation of state parameters w0 and wa. For purely geometrical probes, and especially when marginalising over wa, we find considerable disagreement between the two methods, since in this case the Fisher matrix can","authors_text":"Jochen Weller, Laura Wolz, Martin Kilbinger, Tommaso Giannantonio","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T17:03:28Z","title":"On the Validity of Cosmological Fisher Matrix Forecasts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3984","kind":"arxiv","version":3},"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:b0026db8e48a9f65bb224847eaf9a1b0aeda8922be86a2caf3893132353073be","target":"record","created_at":"2026-05-18T01:57:26Z","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":"a284dbfd462e66ccc4a60dc410838a706adbb04ef1233c69aeaf482b3ecea656","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T17:03:28Z","title_canon_sha256":"e22cecf72a5b7c122bd0e60513acd2a68e41219f898e6de2d97979c0a6a94696"},"schema_version":"1.0","source":{"id":"1205.3984","kind":"arxiv","version":3}},"canonical_sha256":"de49fb99cc21fd9ec187ca7bbc2516021e6ba8f1587a5c9ad0c833f8a66cebe7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de49fb99cc21fd9ec187ca7bbc2516021e6ba8f1587a5c9ad0c833f8a66cebe7","first_computed_at":"2026-05-18T01:57:26.028666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:26.028666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p2lCoEj7XAd4NkVc2SYgGdPh5mNQzvm+IfPGv6MSBJwZUKqGl4qkMfSa4Sdo8hCNf1Sj6MlGucRuCNhpN/OmAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:26.029212Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3984","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0026db8e48a9f65bb224847eaf9a1b0aeda8922be86a2caf3893132353073be","sha256:a0a5de74ee59a99afa1152b3025d56608c5c38ab5bc3ea99ea77928501a38bfd"],"state_sha256":"e71aa875f3feb2b239f215785738f1a333e5eec0fb41a8227c1298a67e4789f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r8QsYZXy48/8WW6u15nVGQC0WDyYUj64ycSAlhj/YHILEOz17466u0QHzynaWcTQnsHetM/aPLEjCIUgrJyuBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T20:56:30.087869Z","bundle_sha256":"5299d38c15200463d7dbe1db4ed64a0edc1400ca10d99b30f9f02986465e09a4"}}