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We also obtain a complete de"},"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":"1903.07143","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OA","submitted_at":"2019-03-17T18:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"2a28e229bd491403d314d4c8010c5c6d504b9f40925f2aab6bfc450f9c18cb89","abstract_canon_sha256":"38a5d1024eee2d4f41e4d1c7ec3750ee42e1a872a369bbdd07d2fe08ee9cc70d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:12.022945Z","signature_b64":"VH7+AzZlNdgkbMXn7CNZn1bd8BWuIqy3Xz6KCkidrTDXx2gTg2ReLDht6mdGwy/djBi47itR12Y2XwjfUkNoCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2bfcab4cf1b24f773831b223ba3a007548134b85fadacce89c50eab2e841dc7","last_reissued_at":"2026-05-17T23:47:12.022557Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:12.022557Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Rigidity results for von Neumann algebras arising from mixing extensions of profinite actions of groups on probability spaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OA","authors_text":"Ionut Chifan, Sayan Das","submitted_at":"2019-03-17T18:32:40Z","abstract_excerpt":"Motivated by Popa's seminal work \\cite{Po04}, in this paper, we provide a fairly large class of examples of group actions $\\Gamma \\curvearrowright X$ satisfying the extended Neshveyev-St{\\o}rmer rigidity phenomenon \\cite{NS03}: whenever $\\Lambda \\curvearrowright Y$ is a free ergodic pmp action and there is a $\\ast$-isomorphism $\\Theta:L^\\infty(X)\\rtimes \\Gamma \\rightarrow L^\\infty(Y)\\rtimes \\Lambda$ such that $\\Theta(L(\\Gamma))=L(\\Lambda)$ then the actions $\\Gamma\\curvearrowright X$ and $\\Lambda \\curvearrowright Y$ are conjugate (in a way compatible with $\\Theta$). 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