update

pages/Math4111/Math4111_L10.md

@@ -27,7 +27,7 @@ $K$ is compact if $\forall$ open cover, $\exists \{G_{\alpha_i}\}_{i=1}^n$ that
 
 $\mathbb{R}$ is not compact since we can build a open cover $\{(x,x+2):x\in \mathbb{Z}\}$ such that we cannot find a finite subcover of $\mathbb{R}$
 
-$\{1,2\}$ is compact let $ $\{G_{\alpha}\}_{\alpha\in A}$ be an open cover of $\{1,2\}$
+$\{1,2\}$ is compact let $\{G_{\alpha}\}_{\alpha\in A}$ be an open cover of $\{1,2\}$
 
 Ironically, $[0,1]$ is compact. This will follow from Theorem 2.40.