User:Cjhanrahan

Engineer with a math hobby. Welcome to my sandbox! I paste things here because the preview window doesn't render Latex in my browser so I need to publish to preview my changes :(

Ignore what you see below!

Theorem
Let $T = \left({S, \tau}\right)$ be a topological space.

Let $H \subseteq S$.

Then $A^{- \circ}$ is regular open.