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Setf - a category of all finite sets and functions between them.

Setf所有有限集合以及它们之间函数的范畴。

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The purpose of this book is to provide an exposition of the theory of convex sets and functions in which applications to extremum problems play the central role.

这本书的目的是为了提供各类凸集和凸函数理论的介绍，它们在极值问题的应用中发挥核心作用。

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In this paper, with the aid of idea of defining those sets and functions, the definitions of E -convex cone, pseudo-quasi- E -convex functions, E -direction derivative are discussed.

借助于这些集合和函数的定义思想，本文定义了E -凸锥、伪拟E -凸函数、E -凸函数方向导数等几种更广义的概念。