These are the arrows that come with standard LaTeX. The
latexsym and amsfonts packages contain many more.
| Symbol | Command | |
|---|---|---|
| ⇓ | \Downarrow | |
| ↓ | \downarrow | |
| ↩ | \hookleftarrow | |
| ↪ | \hookrightarrow | |
| ← | \leftarrow | |
| ⇐ | \Leftarrow | |
| ⇔ | \Leftrightarrow | |
| ↔ | \leftrightarrow | |
| ⟵ | \longleftarrow | |
| ⟸ | \Longleftarrow | |
| ⟷ | \longleftrightarrow | |
| ⟺ | \Longleftrightarrow | |
| ⟼ | \longmapsto | |
| ⟹ | \Longrightarrow | |
| ⟶ | \longrightarrow | |
| ↦ | \mapsto | |
| ↗ | \nearrow | |
| ↖ | \nwarrow | |
| ⇒ | \Rightarrow | |
| → | \rightarrow, or \to | |
| ↘ | \searrow | |
| ↙ | \swarrow | |
| ↑ | \uparrow | |
| ⇑ | \Uparrow | |
| ↕ | \updownarrow | |
| ⇕ | \Updownarrow |
An example of the difference between \to and \mapsto
is: \( f\colon D\to C \) given by \( n\mapsto n^2 \).
For commutative diagrams there are a number of packages, including
tikz-cd and amscd.