I am a mathematician primarily interested in C*-algebras, functional analysis, harmonic analysis and related areas. Some of my previous and current works have some overlaps with one or more other areas such as K-theory, KK-theory, cyclic cohomology, Galois theory, group theory, number theory, deformation quantization. Recently, I've written a lecture notes on C*-algebras, which is available at arXiv:1211.3404.