Experimental working commit, programm will compile

But the Proof that the domain of the local function
is not right. Also if in the definition of our local
function we just use f(x) = x then we get a technical
ambigus parse

1 files changed, 6 insertions, 2 deletions

diff --git a/library/topology/urysohn2.tex b/library/topology/urysohn2.tex
index 8e5261e..05ea180 100644
--- a/library/topology/urysohn2.tex
+++ b/library/topology/urysohn2.tex
@@ -44,10 +44,14 @@
 \begin{proof}
 
 
+    Define $f : X \to \reals$ such that  $f(x) = $
+    \begin{cases}
+        &(x + x) , x \in X
+        % & x ,x \in X    <- will result in technicly ambigus parse
+    \end{cases}
 
-
+    Trivial.
     
-    Contradiction.
     
 \end{proof}