A categorification of the square root of -1

A categorification of the square root of -1
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-1 的平方根的分类

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发表时间:
2014
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通讯作者:
Yin Tian
Yin Tian
中科院分区:
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文献类型:
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作者:
Yin Tian

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We give a graphical calculus for a monoidal DG category $cal{I}$ whose Grothendieck group is isomorphic to the ring $mathbb{Z}[sqrt{-1}]$. We construct a categorical action of $cal{I}$ which lifts the action of $mathbb{Z}[sqrt{-1}]$ on $mathbb{Z}^2$.