Memoirs of the Faculty of Science, Shimane University

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Memoirs of the Faculty of Science, Shimane University 22
1988-12-25 発行

無限ネットワーク上のロイデン境界の性質

Some Properties of Royden Boundary of an Infinite Network
Kayano, Takashi
Yamasaki, Maretsugu
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Description
Fine properties of Royden boundary of an infinite network are discussed in this paper. In particular, we study the problem whether every one-point set of the Royden boundary is a G_δ-set or not.