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May 7, 2013 at 9:41 vote accept dineshdileep
May 3, 2013 at 3:02 answer added Nik Weaver timeline score: 2
May 3, 2013 at 2:11 comment added Włodzimierz Holsztyński Isn't it an instant corollary to the very definition of a convex set? (also, it can be the whole $[b;c]$ interval, and never mind $0$).
May 3, 2013 at 1:43 history asked dineshdileep CC BY-SA 3.0