MIT: 198763886;崩盤的機63841;是63997;麼?Proc(γ<0.23)=?
http://www.myoops.org/twocw/mit/NR/rdonlyres/Sloan-School-of-Management/15-433InvestmentsSpring2003/040F67B1-EF93-4C0D-B902-4C5241D6E609/0/154332random_walk_tw.pdf
http://www.myoops.org/twocw/mit/NR/rdonlyres/Sloan-School-of-Management/15-433InvestmentsSpring2003/040F67B1-EF93-4C0D-B902-4C5241D6E609/0/154332random_walk_tw.pdf