TITLE: N´eron models, purity, and Shimura varieties
ABSTRACT: We show how different purity properties can be used to obtain
new examples of N´eron models.
As a direct application, we use Shimura varieties of Hodge type to get
in arbitrary mixed characteristic, the very first examples of general
nature of projective N´eron models whose generic fibres are not
finite schemes over abelian varieties.
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