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HOCHSCHILD–MITCHELL COHOMOLOGY OF A LOCALLY BOUNDED CATEGORY

机译:局部有界类别的Hochschild–Mitchell同类

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摘要

We consider k-linear categories A which are locally bounded, that is, for every object x, the sums ∑y dimk A(x, y) and ∑y dimk A(y, x) are finite. Let x1,x2,…, be an enumeration of the objects of A such that for each n ∈ N, the full subcategory A(n) of A formed by the objects x1,x2,…,xn is convex in A. We compute the Hochschild–Mitchell cohomology of A as the inverse limit of the cohomologies of the categories A(n).
机译:我们考虑局部限制的k线性类别A,即对于每个对象x,总和∑y dimk A(x,y)和∑y dimk A(y,x)是有限的。令x1,x2,...是A的对象的枚举,使得对于每个n∈N,由对象x1,x2,...,xn形成的A的完整子类别A(n)在A中是凸的。 A的Hochschild-Mitchell同调作为A(n)类同调的逆极限。

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