function Composition: composition, Mathematics, (mathematics), Associativity, Domain of a function, Codomain, Commutativity, Inverse Identity

Transformation Semigroup: Algebra, Function (Mathematics), Closure Composition, Identity

Subadditivity: Mathematics, Element, Square Roots, Additive Function, Domain, Codomain, Closure

Elementary Function: function, Mathematics, Function (mathematics), Exponential Logarithm, Coefficient, Variable ... composition,...

Concave Function: Function, Mathematics, Additive Inverse, Convex Function