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when toggle format what by license comment
Mar 30, 2010 at 23:52 comment added Steve Huntsman The consensus seems to be to just add (a generic element of) $\ker d$. This obviously gives something sensible, but it's unsatisfying to me. Seems like I was looking for something where there's nothing.
Mar 30, 2010 at 22:53 history answered Deane Yang CC BY-SA 2.5