Let $F$ be a number field and let $S$ be a finite set of primes of $F$. Why does every isomorphism of two $\mathcal{O}_{F,S}$-schemes of finite presentation extend uniquely to an isomorphism over an open subset of Spec $\mathcal{O}_{F,S}$?
2026-04-24 03:54:28.1777002868
Extending isomorphisms of schemes of finite presentation over ring of integers
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