diff options
Diffstat (limited to 'library/topology')
| -rw-r--r-- | library/topology/topological-space.tex | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/library/topology/topological-space.tex b/library/topology/topological-space.tex index 2bbdf09..55bc253 100644 --- a/library/topology/topological-space.tex +++ b/library/topology/topological-space.tex @@ -262,5 +262,5 @@ \end{proof} \begin{definition}\label{neighbourhoods} - $\neighbourhoods{x}{X} = \{U\in\opens[X] \mid x\in U\}$. + $\neighbourhoods{x}{X} = \{N\in\pow{\carrier[X]} \mid \exists U\in\opens[X]. x\in U\subseteq N\}$. \end{definition} |