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when toggle format what by license comment
Nov 14, 2017 at 16:34 comment added D.S. Lipham minimum cardinality of a basis
Nov 14, 2017 at 15:55 comment added John Baez What's the "weight" of a continuum?
Nov 12, 2017 at 22:40 history answered D.S. Lipham CC BY-SA 3.0