Allow line breaks via `\textbox`, handle `\left`/`\right`

1 files changed, 2 insertions, 2 deletions

diff --git a/library/topology/basis.tex b/library/topology/basis.tex
index ecdd0f7..e33909f 100644
--- a/library/topology/basis.tex
+++ b/library/topology/basis.tex
@@ -45,6 +45,6 @@
 \end{definition}
 
 \begin{definition}\label{genOpens}
-    $\genOpens{B}{X} = \{ U\in\pow{X} \mid \text{for all $x\in U$ there exists $V\in B$
-    such that $x\in V\subseteq U$}\}$.
+    $\genOpens{B}{X} = \left\{ U\in\pow{X} \middle| \textbox{for all $x\in U$ there exists $V\in B$
+    \\ such that $x\in V\subseteq U$}\right\}$.
 \end{definition}