# Definition:Nowhere Dense

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## Definition

Let $T = \struct {S, \tau}$ be a topological space.

Let $H \subseteq S$.

### Definition 1

$H$ is **nowhere dense** in $T$ if and only if:

- $\paren {H^-}^\circ = \O$

where $H^-$ denotes the closure of $H$ and $H^\circ$ denotes its interior.

### Definition 2

$H$ is **nowhere dense** in $T$ if and only if:

where $H^-$ denotes the closure of $H$.

## Also see

- Results about
**topological denseness**can be found here.