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Aug 28, 2019 at 16:33 comment added Nik Weaver Take $\mathcal{U} = \mathcal{V} =$ the class of all infinite topological spaces. Counterexample to both i) and ii).
Aug 28, 2019 at 16:17 history edited Pietro Majer CC BY-SA 4.0
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Aug 28, 2019 at 16:12 history asked cl4y70n____ CC BY-SA 4.0