{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:K7Y6JGR5HW4Y5TBOB4N5QRZCF4","short_pith_number":"pith:K7Y6JGR5","canonical_record":{"source":{"id":"1709.03298","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-11T08:52:09Z","cross_cats_sorted":[],"title_canon_sha256":"17215d8b97826f3b3183de162a00f25dbf712eb1bc5a8d04f781d9d9d5a41212","abstract_canon_sha256":"f8d79538127ab1637c8fc93182e1f33c13d7848219e5f9c0b1e03c38f6ab78b6"},"schema_version":"1.0"},"canonical_sha256":"57f1e49a3d3db98ecc2e0f1bd847222f3a64543daef189f9843e03caf9777f89","source":{"kind":"arxiv","id":"1709.03298","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03298","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03298v3","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03298","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"pith_short_12","alias_value":"K7Y6JGR5HW4Y","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7Y6JGR5HW4Y5TBO","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7Y6JGR5","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:K7Y6JGR5HW4Y5TBOB4N5QRZCF4","target":"record","payload":{"canonical_record":{"source":{"id":"1709.03298","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-11T08:52:09Z","cross_cats_sorted":[],"title_canon_sha256":"17215d8b97826f3b3183de162a00f25dbf712eb1bc5a8d04f781d9d9d5a41212","abstract_canon_sha256":"f8d79538127ab1637c8fc93182e1f33c13d7848219e5f9c0b1e03c38f6ab78b6"},"schema_version":"1.0"},"canonical_sha256":"57f1e49a3d3db98ecc2e0f1bd847222f3a64543daef189f9843e03caf9777f89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:37.270564Z","signature_b64":"T4LVKU7Wg911DwkRON4wKAPQPgnoUzU5uejMqpPUZ6LlC9RNOR2lKDIOvfJHE7+5xBSNdXokSQELl5vqTdJ7BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57f1e49a3d3db98ecc2e0f1bd847222f3a64543daef189f9843e03caf9777f89","last_reissued_at":"2026-05-18T00:03:37.269970Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:37.269970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.03298","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":"2026-05-18T00:03:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dr+esMcLFbM5RQmfqfzIyQYlj8uhe5CgzyieY2yHaVmeVXni/cVlMUu3J3ztwEYFTM/vUFeiNJwoRPSNk6H4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:49:31.466212Z"},"content_sha256":"d58f638b394dd1f49aad483a42f3511ddd0d20077b7a3c47783736bb61414539","schema_version":"1.0","event_id":"sha256:d58f638b394dd1f49aad483a42f3511ddd0d20077b7a3c47783736bb61414539"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:K7Y6JGR5HW4Y5TBOB4N5QRZCF4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dimension reduction in heterogeneous parametric spaces with application to naval engineering shape design problems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Andrea Mola, Filippo Salmoiraghi, Gianluigi Rozza, Marco Tezzele","submitted_at":"2017-09-11T08:52:09Z","abstract_excerpt":"We present the results of the first application in the naval architecture field of a methodology based on active subspaces properties for parameters space reduction. The physical problem considered is the one of the simulation of the hydrodynamic flow past the hull of a ship advancing in calm water. Such problem is extremely relevant at the preliminary stages of the ship design, when several flow simulations are typically carried out by the engineers to assess the dependence of the hull total resistance on the geometrical parameters of the hull, and others related with flows and hull propertie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03298","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":"2026-05-18T00:03:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2aWjRZ80AItBwZKEE1MoSTIZ/vFXe4ILmzhjeXrAX8h+OaF+zk0dMXusmKJrQe5ROGM+ZB5kTaWFxhhK4HNgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:49:31.466855Z"},"content_sha256":"a38ae8fa4ba15bb5c2a55ec3bf76a0757556846840bd9489bf5576ddf9464915","schema_version":"1.0","event_id":"sha256:a38ae8fa4ba15bb5c2a55ec3bf76a0757556846840bd9489bf5576ddf9464915"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/bundle.json","state_url":"https://pith.science/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/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":"2026-05-28T17:49:31Z","links":{"resolver":"https://pith.science/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4","bundle":"https://pith.science/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/bundle.json","state":"https://pith.science/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K7Y6JGR5HW4Y5TBOB4N5QRZCF4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:K7Y6JGR5HW4Y5TBOB4N5QRZCF4","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":"f8d79538127ab1637c8fc93182e1f33c13d7848219e5f9c0b1e03c38f6ab78b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-11T08:52:09Z","title_canon_sha256":"17215d8b97826f3b3183de162a00f25dbf712eb1bc5a8d04f781d9d9d5a41212"},"schema_version":"1.0","source":{"id":"1709.03298","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03298","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03298v3","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03298","created_at":"2026-05-18T00:03:37Z"},{"alias_kind":"pith_short_12","alias_value":"K7Y6JGR5HW4Y","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7Y6JGR5HW4Y5TBO","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7Y6JGR5","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:a38ae8fa4ba15bb5c2a55ec3bf76a0757556846840bd9489bf5576ddf9464915","target":"graph","created_at":"2026-05-18T00:03:37Z","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 the results of the first application in the naval architecture field of a methodology based on active subspaces properties for parameters space reduction. The physical problem considered is the one of the simulation of the hydrodynamic flow past the hull of a ship advancing in calm water. Such problem is extremely relevant at the preliminary stages of the ship design, when several flow simulations are typically carried out by the engineers to assess the dependence of the hull total resistance on the geometrical parameters of the hull, and others related with flows and hull propertie","authors_text":"Andrea Mola, Filippo Salmoiraghi, Gianluigi Rozza, Marco Tezzele","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-11T08:52:09Z","title":"Dimension reduction in heterogeneous parametric spaces with application to naval engineering shape design problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03298","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:d58f638b394dd1f49aad483a42f3511ddd0d20077b7a3c47783736bb61414539","target":"record","created_at":"2026-05-18T00:03:37Z","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":"f8d79538127ab1637c8fc93182e1f33c13d7848219e5f9c0b1e03c38f6ab78b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-11T08:52:09Z","title_canon_sha256":"17215d8b97826f3b3183de162a00f25dbf712eb1bc5a8d04f781d9d9d5a41212"},"schema_version":"1.0","source":{"id":"1709.03298","kind":"arxiv","version":3}},"canonical_sha256":"57f1e49a3d3db98ecc2e0f1bd847222f3a64543daef189f9843e03caf9777f89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57f1e49a3d3db98ecc2e0f1bd847222f3a64543daef189f9843e03caf9777f89","first_computed_at":"2026-05-18T00:03:37.269970Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:37.269970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T4LVKU7Wg911DwkRON4wKAPQPgnoUzU5uejMqpPUZ6LlC9RNOR2lKDIOvfJHE7+5xBSNdXokSQELl5vqTdJ7BA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:37.270564Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.03298","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d58f638b394dd1f49aad483a42f3511ddd0d20077b7a3c47783736bb61414539","sha256:a38ae8fa4ba15bb5c2a55ec3bf76a0757556846840bd9489bf5576ddf9464915"],"state_sha256":"d5633b818af7cb2f94b0e75c0341577d0b4c5c236609ff4409d1bf5a57936c4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IWdUhvb4F/e3ybISX4kfJiArzecUzAmZxVXggJ9gxtkptksyd+j8AeP+4ftIV+oujYuY6I+t1KjNQN0ieEGHBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:49:31.470427Z","bundle_sha256":"3457791a81406742ca8809b9c88a1e066681d2a65e4bac71bd17d1964cfdda02"}}