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arXiv 0908.1218math.RT
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一个线性代数恒等式的范畴化与Serre函子的因式分解

Categorification of a linear algebra identity and factorization of Serre functors

Sefi Ladkani

摘要:

我们提供了一个众所周知的身份从线性代数作为一个同构的三角范畴之间产生的有限维代数的某些函子的范畴解释。因此,我们推出有限维三角代数A的Serre函子在A的平凡扩张代数上的完美复形范畴中,在移位之前,总是提升到适当定义的反射函子的乘积.

英文摘要:

We provide a categorical interpretation of a well-known identity from linear algebra as an isomorphism of certain functors between triangulated categories arising from finite dimensional algebras. As a consequence, we deduce that the Serre functor of a finite dimensional triangular algebra A has always a lift, up to shift, to a product of suitably defined reflection functors in the category of perfect complexes over the trivial extension algebra of A.

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