Monodromy and irreducibility of leaves
Monodromy and irreducibility of leaves
复制标题
叶子的单性和不可约性
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
F. Oort
中科院分区:
文献类型:
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作者:
C. Chai;F. Oort
We show that non-supersingular Newton polygon strata in the principally polarized case are irreducible. Consider the theory of foliations of an open Newton polygon stratum in the moduli space of abelian varieties in positive characteristic. We show that any non-supersingular leaf is irreducible ,a nd that the monodromy on such a leaf is maximal. Note that in the final result degrees of polarizations are arbitrary. The irreducibility of leaves, as proved here, is the discrete part of a proof of the Hecke orbit conjecture, which will be published in [7]. For a survey of this proof and for the terminology “discrete part” see [2].