Zhiyu
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Member for 8 years
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Nontrivial p-divisible groups over $\mathbb Z$ for general prime $p$
@S.Carnahan Because I am not sure whether there are some mistakes in that paper, and a recent question (torsion points and Mazur theorem) reminds me of this question.
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Natural vector bundle on flag variety coming from the variety of nilpotent matrices of fixed rank?
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Natural vector bundle on flag variety coming from the variety of nilpotent matrices of fixed rank?
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Natural vector bundle on flag variety coming from the variety of nilpotent matrices of fixed rank?
@abx Thank you. For $k=1$, there is a natural action of $\mathbb G_m$, and it's a $\mathbb G_m$-torsor. I think what you said is correct.
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Structure of the variety of $n$-tuples of $m \times m$ matrices with zero product
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Structure of the variety of $n$-tuples of $m \times m$ matrices with zero product
As $X$ may not be smooth (so weights may be different), I don't see why this can compute the dimension of the cohomology group. And can we simplify the formula?
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How to decide whether the isogeny between Neron models is etale?
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Finiteness of $H_1 \backslash G / H_2$ and the geometry of the orbits
@VictorPetrov Thank you, can you give me a reference or a non-example?
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