Density near zero
Let $S$ be a dense subsemigroup of $(0,+infty)$. In this paper, we state definition of thick near zero, and also we will introduce a definition that is equivalent to the definition of piecewise syndetic near zero which presented by Hindman and Leader in [6]. We define density near zero for subs...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Maragheh
2018-01-01
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| Series: | Sahand Communications in Mathematical Analysis |
| Subjects: | |
| Online Access: | http://scma.maragheh.ac.ir/article_23682_545b6075235df500f5ed73aa31024524.pdf |