# Category:Neighborhoods

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This category contains results about Neighborhoods.

Definitions specific to this category can be found in Definitions/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 only the following subcategory.

### E

## Pages in category "Neighborhoods"

The following 31 pages are in this category, out of 31 total.

### B

### I

### M

### N

- Neighborhood Basis in Cartesian Product under Chebyshev Distance
- Neighborhood iff Contains Neighborhood
- Neighborhood in Metric Space has Subset Neighborhood
- Neighborhood in Topological Space has Subset Neighborhood
- Neighborhood in Topological Subspace
- Neighborhood of Point in Metrizable Space contains Closed Neighborhood
- Neighborhoods in Standard Discrete Metric Space
- Neighbourhood of Point Contains Point of Subset iff Distance is Zero