# Definition:Bijection/Technical Note

The $\LaTeX$ code for $f: S \leftrightarrow T$ is f: S \leftrightarrow T .
The $\LaTeX$ code for $f: S \cong T$ is f: S \cong T .
The $\LaTeX$ code for $S \stackrel f \cong T$ is S \stackrel f \cong T .