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arXiv · 1001.3662

Lyubeznik numbers of projective schemes

Wenliang Zhang
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Abstract

Let $X$ be a projective scheme over a field $k$ and let $A$ be the local ring at the vertex of the affine cone of $X$ under some embedding $X\hookrightarrow\mathbb{P}^n_k$. We prove that, when $\ch(k)>0$, the Lyubeznik numbers $λ_{i,j}(A)$ are intrinsic numerical invariants of $X$, i.e., $λ_{i,j}(A)$ depend only on $X$, but not on the embedding.

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Wenliang Zhang. 2011-07-28. Lyubeznik numbers of projective schemes. https://arxiv.org/abs/1001.3662

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