# Thread: Relations theory, reflexive, transitive, symmetric

2. ## Re: Relations theory, reflexive, transitive, symmetric

Originally Posted by TaraMossop
On $$\mathbb{R},~xRy~\Leftrightarrow~x|y$$ gives $\mathbb{R},~xRy~\Leftrightarrow~x|y$
Click on the “go advanced” tab. On the toolbar you will see $\boxed{\Sigma}$ clicking on that give the LaTeX wraps, . The code goes between them.