Sur le produit de variétés localement factorielles ou Q-factorielles
arXiv:1104.1861
Abstract
We show that the factorial and Q-factorial loci of algebraic varieties defined over an algebraically closed field are open, that products of locally factorial varieties are still locally factorial, and that this property remains true for Q-factorial varieties if the ground field is not the algebraic closure of a finite field.
arXiv commentin French, minor changes
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