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Methods to tell if a magma has idempotents

(Disclaimer: below, when I say "compact" I mean "compact Hausdorff.") I asked a version of this question on math stackexchange (https://math.stackexchange.com/questions/305186/left-continuous-magmas-...

universal-algebra
gn.general-topology
examples

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modified Feb 18, 2013 at 18:07

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Methods to tell if a magma has idempotents

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