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We study the holomorphic structure of $\\mathcal{M}$ around a circle $\\mathcal{T}$ of regular reductions. Our model space is a \"blowup flip passage\", which is a manifold with boundary whose boundary is a projective fibration, and whose interior comes with a natural complex structure.\n  We prove that a neighborhood of the boundary of the blowup $\\hat{\\mathcal{M}}_{\\mathcal{T}}$ of $\\mathcal{M}$ at $\\mathca"},"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":"1411.4985","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2014-11-18T19:51:20Z","cross_cats_sorted":["math.AG","math.CV"],"title_canon_sha256":"03b24b7d146cdb627b91679cbf185045ad777675afebad6b7b1555b08176917e","abstract_canon_sha256":"1f1ccccb9e60bc0acf6771fbc346e3336ade9dd28695d4ba192226429e2a3994"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:46.325332Z","signature_b64":"bFzQvKeXxJ4Hg7BLLpJURnvtDWQnx162n9nLgcHnjFZN8euMduxEmolO9LajrZfetJujC+cZubJAgJB1RMuzBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52bf9bcb770fc8b33d4649f3803e0b8b70efda819d4a874828e764655c3c93bd","last_reissued_at":"2026-05-18T02:34:46.324929Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:46.324929Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Instanton moduli spaces on non-K\\\"ahlerian surfaces. 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