{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:EFQ6QRBX6ZBQNNHPZTLNWPWI4I","short_pith_number":"pith:EFQ6QRBX","canonical_record":{"source":{"id":"1603.03626","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-03-11T13:39:49Z","cross_cats_sorted":[],"title_canon_sha256":"3ca57ae83b961fe0591adfc6714fdcd0b20bcdea858b794c51f4b675c664c1e5","abstract_canon_sha256":"4810a8e61b64adbe8598f04438a8c6f8536ba613b58b16911700dd1e0331cd29"},"schema_version":"1.0"},"canonical_sha256":"2161e84437f64306b4efccd6db3ec8e20ee9e0d69d2e4f95e9d0f5aedf62e825","source":{"kind":"arxiv","id":"1603.03626","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.03626","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"1603.03626v2","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.03626","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"EFQ6QRBX6ZBQ","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EFQ6QRBX6ZBQNNHP","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EFQ6QRBX","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:EFQ6QRBX6ZBQNNHPZTLNWPWI4I","target":"record","payload":{"canonical_record":{"source":{"id":"1603.03626","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-03-11T13:39:49Z","cross_cats_sorted":[],"title_canon_sha256":"3ca57ae83b961fe0591adfc6714fdcd0b20bcdea858b794c51f4b675c664c1e5","abstract_canon_sha256":"4810a8e61b64adbe8598f04438a8c6f8536ba613b58b16911700dd1e0331cd29"},"schema_version":"1.0"},"canonical_sha256":"2161e84437f64306b4efccd6db3ec8e20ee9e0d69d2e4f95e9d0f5aedf62e825","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:41.050634Z","signature_b64":"G3uBnCNP2NpOjCQgwM598eUK74zxC5XpzBwJ6Fn31X/AoWac09gzVTCEbTcjMhlAw7Ksc3Ui2PWvVJDi8d+sCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2161e84437f64306b4efccd6db3ec8e20ee9e0d69d2e4f95e9d0f5aedf62e825","last_reissued_at":"2026-05-18T01:11:41.050277Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:41.050277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.03626","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":"2026-05-18T01:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sDT53MHuL0llhMZa1uf0hDLq9fC8YohGVXeLH0XD2avs0v0o8OJbwLZHbbG6geY+YWkLKMJo4I+GvDw3jy1pBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:56:31.888588Z"},"content_sha256":"0c49e906c98b4a901e2c1ab41531220b07e9d925dbbb8933cc2994f68f6805cd","schema_version":"1.0","event_id":"sha256:0c49e906c98b4a901e2c1ab41531220b07e9d925dbbb8933cc2994f68f6805cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:EFQ6QRBX6ZBQNNHPZTLNWPWI4I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Describing variations of the Fisher-matrix across parameter space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Bj\\\"orn Malte Sch\\\"afer, Robert Reischke","submitted_at":"2016-03-11T13:39:49Z","abstract_excerpt":"Forecasts in cosmology, both with Monte-Carlo Markov-chain methods and with the Fisher matrix formalism, depend on the choice of the fiducial model because both the signal strength of any observable as well as the model nonlinearities linking observables to cosmological parameters vary in the general case. In this paper we propose a method for extrapolating Fisher-forecasts across the space of cosmological parameters by constructing a suitable ba- sis. We demonstrate the validity of our method with constraints on a standard dark energy model extrapolated from a {\\Lambda}CDM-model, as can be ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.03626","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":""},"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":"2026-05-18T01:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KmZG4MDlprvkvhJaMjsoVmLXdvEg3N3aeur9+k+h8tn4XAxgoWhwBs3ojz/Dwy/60/GKw5MqwJfg7y8zrt+YAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:56:31.889307Z"},"content_sha256":"687202e341d17374089e8cdee5c3927b8d96f611dc0a61799fe1f7fe0eed2fbb","schema_version":"1.0","event_id":"sha256:687202e341d17374089e8cdee5c3927b8d96f611dc0a61799fe1f7fe0eed2fbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/bundle.json","state_url":"https://pith.science/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/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":"2026-06-05T22:56:31Z","links":{"resolver":"https://pith.science/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I","bundle":"https://pith.science/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/bundle.json","state":"https://pith.science/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFQ6QRBX6ZBQNNHPZTLNWPWI4I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EFQ6QRBX6ZBQNNHPZTLNWPWI4I","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":"4810a8e61b64adbe8598f04438a8c6f8536ba613b58b16911700dd1e0331cd29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-03-11T13:39:49Z","title_canon_sha256":"3ca57ae83b961fe0591adfc6714fdcd0b20bcdea858b794c51f4b675c664c1e5"},"schema_version":"1.0","source":{"id":"1603.03626","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.03626","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"1603.03626v2","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.03626","created_at":"2026-05-18T01:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"EFQ6QRBX6ZBQ","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EFQ6QRBX6ZBQNNHP","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EFQ6QRBX","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:687202e341d17374089e8cdee5c3927b8d96f611dc0a61799fe1f7fe0eed2fbb","target":"graph","created_at":"2026-05-18T01:11:41Z","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":"Forecasts in cosmology, both with Monte-Carlo Markov-chain methods and with the Fisher matrix formalism, depend on the choice of the fiducial model because both the signal strength of any observable as well as the model nonlinearities linking observables to cosmological parameters vary in the general case. In this paper we propose a method for extrapolating Fisher-forecasts across the space of cosmological parameters by constructing a suitable ba- sis. We demonstrate the validity of our method with constraints on a standard dark energy model extrapolated from a {\\Lambda}CDM-model, as can be ex","authors_text":"Bj\\\"orn Malte Sch\\\"afer, Robert Reischke","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-03-11T13:39:49Z","title":"Describing variations of the Fisher-matrix across parameter space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.03626","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":"sha256:0c49e906c98b4a901e2c1ab41531220b07e9d925dbbb8933cc2994f68f6805cd","target":"record","created_at":"2026-05-18T01:11:41Z","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":"4810a8e61b64adbe8598f04438a8c6f8536ba613b58b16911700dd1e0331cd29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-03-11T13:39:49Z","title_canon_sha256":"3ca57ae83b961fe0591adfc6714fdcd0b20bcdea858b794c51f4b675c664c1e5"},"schema_version":"1.0","source":{"id":"1603.03626","kind":"arxiv","version":2}},"canonical_sha256":"2161e84437f64306b4efccd6db3ec8e20ee9e0d69d2e4f95e9d0f5aedf62e825","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2161e84437f64306b4efccd6db3ec8e20ee9e0d69d2e4f95e9d0f5aedf62e825","first_computed_at":"2026-05-18T01:11:41.050277Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:41.050277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G3uBnCNP2NpOjCQgwM598eUK74zxC5XpzBwJ6Fn31X/AoWac09gzVTCEbTcjMhlAw7Ksc3Ui2PWvVJDi8d+sCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:41.050634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.03626","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c49e906c98b4a901e2c1ab41531220b07e9d925dbbb8933cc2994f68f6805cd","sha256:687202e341d17374089e8cdee5c3927b8d96f611dc0a61799fe1f7fe0eed2fbb"],"state_sha256":"3c69a246baf543ddc502c66880f676b8c585354e429311f2f55ca0ce3b8db997"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dFRQ6h1SWfSrxH2vJD7i4sDO95hQUgRr8u2gA2JhEprZ9ysPTvVCxStmUyZTC2bHIQ6I04pNv9/LZ8zYTd9Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:56:31.893755Z","bundle_sha256":"5de6b65cecc73884b2819672e6a95f6171c0cabc7c0c288ae0987cbc9a79625e"}}