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Definition 19.3.2F1312787FCC5

Definition 19.3.2.F1312787FCC5 An admissible flag $Y_{\bullet }$ on $X$ is a flag of subvarieties

\[ X=Y_0\supseteq Y_1\supseteq \cdots \supseteq Y_ n \]

such that $Y_ i$ is irreducible of codimension $i$ and is smooth at the point $Y_ n$.

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