These lectures have benefited greatly from comments and
suggestions from our colleagues, students and friends. Special
thanks are due to our sponsoring organization the Alfred P. Sloan
Foundation and our research assistants Chase Coleman, Spencer Lyon
and Matthew McKay for innumerable contributions to the code
library and functioning of the website.
We also thank Andrij
Stachurski for his great web skills, and the many others
who have contributed suggestions, bug fixes or improvements. They
include but are not limited to Anmol Bhandari, Jeong-Hun Choi,
David Evans, Chenghan Hou, Doc-Jin Jang, Qingyin Ma, Tomohito
Okabe, Daisuke Oyama, David Pugh, Alex Olssen, Nathan Palmer, Bill
Tubbs, Pablo Winant and Yixiao Zhou.