e/Schur-convex function

Information
has gloss	eng: In mathematics, a Schur-convex function, also known as S-convex, isotonic function and order-preserving function is a function f: \mathbbR}^d\rightarrow \mathbbR}, for which if \forall x,y\in \mathbbR}^d where x is majorized by y, then f(x)\le f(y). Named after Issai Schur, Schur-convex functions are used in the study of majorization. Every function that is convex and symmetric is also Schur-convex.
lexicalization	eng: Schur-convex function
instance of	e/Inequality