Families of A 1-contractible affine threefolds

Families of A 1-contractible affine threefolds
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A 1-可收缩仿射三重族

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发表时间:
2017
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影响因子:
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通讯作者:
J. Fasel
J. Fasel
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文献类型:
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作者:
A. Dubouloz;J. Fasel

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我们给出了三重仿射族,它们是A1-可收缩的(即,在不稳定的Morel-Voevodsky的A1-同伦范畴中可收缩),并且是两两非同构的,从而回答了Asok和Doran的一个猜想。作为特例,我们证明了第一类Koras-Russell三重数是A1-可压缩的,推广了Hoyois,Krishna和?STVær的结果。
We provide families of affine threefolds which are A1-contractible (that is, contractible in the unstable A1-homotopy category of Morel–Voevodsky) and pairwise non-isomorphic, thus answering a conjecture of Asok and Doran. As a particular case, we show that the Koras–Russell threefolds of the first kind are A1-contractible, extending results of Hoyois, Krishna and Østvær.