Category:Definitions/Neighborhoods

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This category contains definitions related to Neighborhoods.
Related results can be found in Category:Neighborhoods.


Let $A \subseteq S$ be a subset of $S$.

A neighborhood of $A$, which can be denoted $N_A$, is any subset of $S$ containing an open set of $T$ which itself contains $A$.

That is:

$\exists U \in \tau: A \subseteq U \subseteq N_A \subseteq S$

Subcategories

This category has the following 2 subcategories, out of 2 total.

Pages in category "Definitions/Neighborhoods"

The following 54 pages are in this category, out of 54 total.