A remark on toric foliations

Pub Date : 2024-04-09 DOI:10.1007/s00013-024-01991-1
Osamu Fujino, Hiroshi Sato
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Abstract

If a toric foliation on a projective \({\mathbb {Q}}\)-factorial toric variety has an extremal ray whose length is longer than the rank of the foliation, then the associated extremal contraction is a projective space bundle and the foliation is the relative tangent sheaf of the extremal contraction.

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如果投影({\mathbb {Q}})因子环状变上的环状折射有一条极射线,其长度长于折射的秩,那么相关的极收缩是一个投影空间束,而折射是极收缩的相对切剪。
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