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- W1969455280 abstract "Let A=kQ/I be a finite dimensional triangular k-algebra. Consider the Cartan matrix CA and the Coxeter matrix ϕA=−CA−tCA. Let χϕ(T)=det(Tid−ϕA) be the Coxeter polynomial of A. We study conditions on Spec ϕA in order that ϕA is a periodic matrix. We show that in case ϕA is periodic then the Euler quadratic form qA(x)=xCA−txt is non-negative and qA>0 if and only if 1∉ Spec ϕA." @default.
- W1969455280 created "2016-06-24" @default.
- W1969455280 creator A5023066071 @default.
- W1969455280 date "2003-05-01" @default.
- W1969455280 modified "2023-10-16" @default.
- W1969455280 title "Periodic Coxeter matrices" @default.
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- W1969455280 doi "https://doi.org/10.1016/s0024-3795(02)00405-6" @default.
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