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Among the list of ten possible such types $(g,d)$, two were previously left as open numerical possibilities, namely $(g,d) = (0,5)$ and $(2,6)$. Using the Sarkisov link associated with a curve of type $(2,6)$, we are able to produce the first example of a pseudo-automorphism with dynamical degree greater than $1$ on a smooth threefold wi"},"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":"1409.7778","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2014-09-27T07:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"181acde2128f730f1c722033af57ecc729353e826cde1f6f12a067f8acac5097","abstract_canon_sha256":"cb865951b218139fe09da2438d116c26faca2c74ecedc7ea7f71aea7e092e165"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:05.359156Z","signature_b64":"bNdPJpaze3KiF47Tl0edo41YN/FX6ux1DdFFyhGGWAH5CCIW+QrtHs7Ew1pWnt2CNYwsUnG57oUxwECml3WUAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a05b18bbe1b7ddac368132335e3dbaa51b0065a3940abcd6b94ae1b08ca44db","last_reissued_at":"2026-05-18T01:02:05.358581Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:05.358581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On birational maps from cubic threefolds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"J\\'er\\'emy Blanc, St\\'ephane Lamy","submitted_at":"2014-09-27T07:35:25Z","abstract_excerpt":"We characterise smooth curves in a smooth cubic threefold whose blow-ups produce a weak-Fano threefold. 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