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arXiv · 0708.0210

Triangulated categories of matrix factorizations for regular systems of weights with $ε=-1$

Hiroshige Kajiura·Kyoji Saito·Atsushi Takahashi
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Abstract

We construct a full strongly exceptional collection in the triangulated category of graded matrix factorizations of a polynomial associated to a non-degenerate regular system of weights whose smallest exponents are equal to -1. In the associated Grothendieck group, the strongly exceptional collection defines a root basis of a generalized root system of sign (l,0,2) and a Coxeter element of finite order, whose primitive eigenvector is a regular element in the expanded symmetric domain of type IV with respect to the Weyl group.

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Hiroshige Kajiura, Kyoji Saito, Atsushi Takahashi. 2007-08-01. Triangulated categories of matrix factorizations for regular systems of weights with $ε=-1$. https://arxiv.org/abs/0708.0210

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