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A directional accent placing a left-pointing arrow beneath text, commonly used in category theory and algebraic mappings.

\underleftarrow{AB} image

Examples

Inverse limit notation in algebra

\underleftarrow{\lim} A_n

Directed vector with left arrow underneath

\underleftarrow{AB} = -\underrightarrow{BA}

Reverse mapping in category theory

F: \underleftarrow{X_i} \to Y