Talk:De Groot dual

Latest comment: 14 years ago by Michael Hardy in topic Untitled

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This article begins thus:

In mathematics, in particular in topology, the de Groot dual of a topology τ on a set X is

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In mathematics, in particular in topology, the de Groot dual of a topology τ on a set X, named after ?????? de Groot, is

Could someone supply that information? Michael Hardy (talk) 05:00, 18 March 2010 (UTC)Reply