3 papers
math.RT2025
Fractal behavior of tensor powers of tilting modules of
Nai-Heng Sheu
Given a group and a representation of , denote the number of indecomposable summands of by . Given a tilting representation of $\text{SL}…
math.RT2025
Asymptotic Growth of Trivial Summands in Tensor Powers
Nai-Heng Sheu
Given a finite-dimensional representation over an algebraically closed field of an abstract group , we consider the number of the trivial summand counted with multiplicity i…
math.NT2019
Class numbers of CM algebraic tori, CM abelian varieties and components of unitary Shimura varieties
Jia-Wei Guo, Nai-Heng Sheu, Chia-Fu Yu
We give a formula for the class number of an arbitrary CM algebraic torus over . This is proved based on results of Ono and Shyr. As applications, we give formulas for…