updates

content/Math4202/Math4202_L1.md

@@ -14,4 +14,10 @@ Classifying two dimensional surfaces.
 
 ## Quotient spaces
 
-Let $X$ be a topological space and $f:X\to Y$ is a continuous, surjective map. WIth the property that $U\subset Y$ is open if and only if $f^{-1}(U)$ is open in $X$, we say $f$ is a quotient map and $Y$ is a quotient space.
+Let $X$ be a topological space and $f:X\to Y$ is a
+
+1. continuous
+2. surjective map.
+3. With the property that $U\subset Y$ is open if and only if $f^{-1}(U)$ is open in $X$.
+
+Then we say $f$ is a quotient map and $Y$ is a quotient space.