Yeon-Koo Che is the Kelvin J. Lancaster Professor of Economic Theory at Columbia University. He received a PhD in Economics at the Stanford University in 1991. The same year, he became an Assistant Professor at the University of Wisconsin-Madison. He was promoted to Associated Professor with tenure in 1997 and to Professor in 2000. Yeon-Koo joined the Columbia University as Professor of Economics in 2005. His research focuses on market... More