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when toggle format what by license comment
Dec 31, 2018 at 19:43 comment added falgenint I edited my answer, I show S. McGrew's answer mathematically.
Dec 31, 2018 at 18:52 comment added zld123 is there any way to show this mathematically?
Dec 31, 2018 at 17:45 history answered S. McGrew CC BY-SA 4.0