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Hence in the case of a non-constant Blaschke product $b$, the C*-envelope has the form $ \\rC(\\S_{b})\\times_{s} \\bZ$, where $(\\S_{b}, s)$ is the solenoid system for $(\\bT, b)$. In the case where $b$ is a constant, then the C*-envelope of $\\AD\\times_{\\alpha} \\bZ^+$ is strongly Morita equivalent to a crossed product of the form $ \\rC(\\S_{e})\\t"},"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":"1104.1398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OA","submitted_at":"2011-04-07T18:32:56Z","cross_cats_sorted":[],"title_canon_sha256":"36a3293bb1b72370f0e099deb555dfc073cc213f0d6f9f2f2cd1685189a2ece4","abstract_canon_sha256":"17c230a71daacadb7316443034d5ac6d4a520c8de2902d7ae518893f2b60cf39"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:24:52.319877Z","signature_b64":"KvhWJfKbSk2R63ftExyn1PfjkVXJ7XTQYDFo+54fgCOxpr4y9CFcm2plKJRz1fYKBmybZ70c367u9UG5aEv1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e3808466abcd8f8b5e2f1e6dc2fefac2959dab267e7a22e08ddde58e06811939","last_reissued_at":"2026-05-18T04:24:52.319450Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:24:52.319450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Semicrossed products of the disc algebra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OA","authors_text":"Elias G. 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