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Aug 12, 2014 at 23:19 vote accept Stanley Yao Xiao
Nov 21, 2012 at 9:24 comment added Dave Anderson The Chow groups are indeed free, thanks to a computation of Al-Amrani from the 1980's. (The K_0 is also free, also by Al-Amrani.)
Nov 21, 2012 at 3:19 history answered Allen Knutson CC BY-SA 3.0