## Tag `041Y`

Chapter 62: Descent and Algebraic Spaces > Section 62.10: Descending properties of morphisms in the fpqc topology

Lemma 62.10.15. The property $\mathcal{P}(f) =$''$f$ is an isomorphism'' is fpqc local on the base.

Proof.Combine Lemmas 62.10.6 and 62.10.14. $\square$

The code snippet corresponding to this tag is a part of the file `spaces-descent.tex` and is located in lines 1391–1395 (see updates for more information).

```
\begin{lemma}
\label{lemma-descending-property-isomorphism}
The property $\mathcal{P}(f) =$``$f$ is an isomorphism''
is fpqc local on the base.
\end{lemma}
\begin{proof}
Combine Lemmas \ref{lemma-descending-property-surjective}
and \ref{lemma-descending-property-open-immersion}.
\end{proof}
```

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