正合函子 Exact functor
(重定向自Left exact functor)
在范畴论中,正合函子(或译作恰当函子)是保存有限极限的函子。在阿贝尔范畴中,这就相当于保存正合串行的函子。
单词 | Left exact functor |
释义 |
Left exact functor
中文百科
正合函子 Exact functor(重定向自Left exact functor)
在范畴论中,正合函子(或译作恰当函子)是保存有限极限的函子。在阿贝尔范畴中,这就相当于保存正合串行的函子。
英语百科
Exact functor 正合函子(重定向自Left exact functor)
In homological algebra, an exact functor is a functor that preserves exact sequences. Exact functors are convenient for algebraic calculations because they can be directly applied to presentations of objects. Much of the work in homological algebra is designed to cope with functors that fail to be exact, but in ways that can still be controlled. |
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