leftarrow
Displays a horizontal arrow pointing to the left, commonly used to indicate direction, implication, or mapping relationships.
Overview
Essential in mathematical notation and technical writing for expressing relationships, mappings, and logical flow.
- Frequently used in set theory and abstract algebra to denote mappings between sets
- Common in algorithm descriptions and flowcharts to show process direction
- Appears in computer science for indicating assignment or return values
- Often paired with \rightarrow to show bidirectional relationships or equivalence
- Valuable in physics and engineering to indicate motion or transformation
Examples
Showing a logical implication from right to left.
q \leftarrow pIndicating a variable assignment in an algorithm.
x \leftarrow 5Representing a limit approaching from the right.
\lim_{x \to 3^+ \leftarrow} f(x)