| $<$ | < | $>$ | > | $=$ | = |
| $\leq$ | \leq | $\geq$ | \geq | $\equiv$ | \equiv |
| $\ll$ | \ll | $\gg$ | \gg | $\doteq$ | \doteq |
| $\prec$ | \prec | $\succ$ | \succ | $\sim$ | \sim |
| $\preceq$ | \preceq | $\succeq$ | \succeq | $\simeq$ | \simeq |
| $\subset$ | \subset | $\supset$ | \supset | $\approx$ | \approx |
| $\subseteq$ | \subseteq | $\supseteq$ | \supseteq | $\cong$ | \cong |
| $\in$ | \in | $\ni$ | \ni | $\notin$ | \notin |
| $\mid$ | \mid | $\parallel$ | \parallel | $\perp$ | \perp |
| $\because$ | \because | $\therefore$ | \therefore | $\neq$ | \neq |