From: James Stasheff <[email-masked]>
Date: Sat, 12 Feb 2000 12:23:31 -0500 (EST)

As of some notes from 1996, it was an open question as
to how to make a closed model category from coalgebras
which as dg modules are flat over the ground ring

one problem: the naive cokernel is no longer flat

.oooO   Jim Stasheff		[email-masked]
(UNC)   Math-UNC		(919)-962-9607
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        http://www.math.unc.edu/Faculty/jds