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When abelian = Hausdorff. (English)
Coll. Math. J. 43, No. 3, 213-215 (2012).
Summary: A pair of elementary exercises, one from topology, the other from group theory are such that if one replaces three words in the topology problem, you get the group theory problem and vice-versa. This suggests connections between the two that are explored here.
Classification: H75
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