Zhen-Qing Chen is a Professor of Mathematics at the University of Washington, Seattle, Washington, USA
Takashi Kumagai is a Professor of Mathematics at Waseda University, Tokyo, Japan.
Laurent Saloff-Coste is the Abram R. Bullis Professor of Mathematics at Cornell University, Ithaca, New York, USA.
Jian Wang is a Professor of Mathematics at Fujian Normal University, Fuzhou, Fujian Province, P.R. China
Tianyi Zheng is a Professor of Mathematics at the University of California, San Diego, California, USA
