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AHMED SALEM, A CERTAIN CLASS OF APPROXIMATIONS FOR THE 𝑞-DIGAMMA FUNCTION, The Rocky Mountain Journal of Mathematics, Vol. 46, No. 5 (2016), pp. 1665-1677 ...
We characterize the set of extreme points of monotonic functions that are either majorized by a given function f or themselves majorize f and show that these extreme points play a crucial role in many ...