From a583eaa4ed6ba4d65dee96f6fa01106cfef5dd78 Mon Sep 17 00:00:00 2001
From: adelon <22380201+adelon@users.noreply.github.com>
Date: Tue, 14 May 2024 16:54:30 +0200
Subject: Update basis.tex

---
 library/topology/basis.tex | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/library/topology/basis.tex b/library/topology/basis.tex
index dda187c..bca42f0 100644
--- a/library/topology/basis.tex
+++ b/library/topology/basis.tex
@@ -43,3 +43,8 @@
     for all $U, V, x$ such that $U, V\in B$ and $x\in U,V$
     there exists $W\in B$ such that $x\in W\subseteq U, V$.
 \end{definition}
+
+\begin{definition}\label{genOpens}
+    $\genOpens{B}{X} = \{ U\in\pow{X} \mid for all $x\in U$ there exists $V\in B$
+    such that $x\in V\subseteq U$\}$.
+\end{definition}
-- 
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