supported by National Natural Science Foundation of China(Grant No.11131001)
We study the cluster automorphism group of a skew-symmetric cluster algebra with geometric coefficients. We introduce the notion of gluing free cluster algebra, and show that under a weak condition the cluster automor...
supported by the Fundamental Research Funds for the Central Universities(No.BLX2013014);the National Natural Science Foundation of China(No.11131001)
For a symmetrizable Kac-Moody Lie algebra g, Lusztig introduced the corresponding modified quantized enveloping algebra˙U and its canonical basis˙B given by Lusztig in 1992. In this paper, in the case that g is a sy...
Motivated by Problem 164 proposed by Y. Berkovich and E. Zhmud' in their book "Characters of Finite Groups", we give a characterization of finite groups whose irreducible character codegrees are prime powers. This ...
supported by National Natural Science Foundation of China(Grant No.11131001);supported by BIT Basic Scientific Research Grant(Grant No.3170012211408)
We consider a Krull-Schmidt, Hom-finite, 2-Calabi Yau triangulated category with a basic rigid object T, and show a bijection between the set of isomorphism classes of basic rigid objects in the finite presented categ...