Editing Subadditivity (section)

{{Short description|Property of some mathematical functions}}
In [[mathematics]], '''subadditivity''' is a property of a function that states, roughly, that evaluating the function for the sum of two [[element (set)|elements]] of the [[Domain of a function|domain]] always returns something less than or equal to the sum of the function's values at each element. There are numerous examples of subadditive functions in various areas of mathematics, particularly [[norm (mathematics)|norms]] and [[square roots]]. [[Additive map]]s are special cases of subadditive functions.