Yaroslav Yatsyshyn

most citedPurity of Zip Strata with Applications to Ekedahl-Oort Strata of Shimura Varieties of Hodge Type

6 citations · 6 across the 1 of their papers we have counts for

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math.AG2014★ 6 cited

Purity of Zip Strata with Applications to Ekedahl-Oort Strata of Shimura Varieties of Hodge Type

Torsten Wedhorn, Yaroslav Yatsyshyn

We show that the zip stratification given by an arbitrary $\Ghat$-zip over a scheme is pure. We deduce purity of the level- $m$ -stratification for truncated Barsotti-Tate groups and…

math.AG2012

Purity of G-zips

Yaroslav Yatsyshyn

Let $k$ be a perfect field of characteristic $p > 0$ , and $S$ an scheme over $k$ . An $F$ -zip is basically a locally free $O_{S}$ -module of finite rank endowed with two filtration and a…