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Oct 13, 2009 at 2:16 comment added Ben Webster "I think some of us were confused because "regular subgroup" is not a common thing to say if you're not a permutation group theorist." Indeed, I've written a paper on permutation groups and it still took me a while to figure out what that's supposed to mean.
Oct 13, 2009 at 1:35 history answered John Goodrick CC BY-SA 2.5