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EntityQ1384902· pop 9· linked from 67 articles

Also known as Ext

derived functors of the Hom functor

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Subclass of
derived functor
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Article · 中文

在同調代數中,Ext 函子是 Hom 函子的導函子。此函子首見於代數拓撲,但其應用遍佈許多領域。

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