Definition:Subadditive Function


 * Subadditive Function (Conventional Definition): $\map f {x + y} \le \map f x + \map f y$


 * Subadditive Function (Measure Theory): $\map f {A \cup B} \le \map f A + \map f B$
 * In this context, also see Countably Subadditive Function.

Also see

 * Definition:Additive Function
 * Definition:Additive