\UarrThe \Uarr command in LaTeX is used to produce an upwards double arrow, often used in mathematical notation to indicate a mapping or transformation in the upward direction.
Indicating a transformation from A to B in the upward direction.
A \Uarr BDenoting a function f that maps set X to set Y with an upward arrow.
f: X \Uarr YRepresenting a limit or transformation as n approaches infinity with an upward double arrow.
\Uarr_{n \to \infty}