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Subadditive set function : ウィキペディア英語版 | Subadditive set function In mathematics, a subadditive set function is a set function whose value, informally, has the property that the value of function on the union of two sets is at most the sum of values of the function on each of the sets. This is thematically related to the subadditivity property of real-valued functions. == Definition == Let be a set and be a set function, where denotes the power set of . The function ''f'' is ''subadditive'' if for each subset and of , we have .〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Subadditive set function」の詳細全文を読む
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