Open Map
# Definition
Let $X, Y$ be Topological Spaces and let $F: X \to Y$ be a Function. $F$ is called an Open Map if for all Open $U \subset X$, $F(U) \subset Y$ is Open.
Search
Let $X, Y$ be Topological Spaces and let $F: X \to Y$ be a Function. $F$ is called an Open Map if for all Open $U \subset X$, $F(U) \subset Y$ is Open.