有界集的球包與完備集相關(guān)問題的研究
[Abstract]:In 1911, Meissner introduced the concept of complete set when he studied the equal-width set of Euclidean space. Adding a single point outside the bounded set without increasing the diameter of the set, the bounded set is said to be complete. On complete sets, many mathematicians have done a series of important work in general real Banach spaces, especially in finite dimensional real Banach spaces, around complete sets and their related properties, complete mapping of sets and some problems related to complete sets. But there are still many unsolved problems. At the same time, we know that the ball packet of bounded set is closely related to the properties of complete set and the uniqueness of complete set and plays an important role in the process of complete set. In this paper, based on the previous studies, we study the relation between the set and its broad and compact spherical packets. In this paper, we first review some basic properties of the origin of the concept of complete set, some properties of complete set, and some research problems and relevant conclusions related to complete set. Secondly, the norm of some special normed linear spaces and some relevant knowledge about diameter points and balls are introduced. Finally, the boundary structure of the bounded set, the diameter points of the bounded set and its ball packet, and the distance between the bounded set and the boundary of the bounded set are studied in Banach space. In addition, a necessary and sufficient condition for the wide ball packet of a bounded set to be a ball is given.
【學(xué)位授予單位】:哈爾濱理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:O177
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