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when toggle format what by license comment
Apr 29, 2019 at 14:35 history edited Charles Rezk CC BY-SA 4.0
typo
Apr 29, 2019 at 14:35 comment added Charles Rezk Yep thanks................................
Apr 28, 2019 at 20:57 comment added cgodfrey Should it be $I_U = \{ i \in I \, | \, U \subseteq X_i \}$?
Apr 12, 2019 at 23:25 history edited Charles Rezk CC BY-SA 4.0
typo
Apr 12, 2019 at 23:13 history answered Charles Rezk CC BY-SA 4.0