\dashleftarrow
The \dashleftarrow command in LaTeX is used to produce a leftward arrow with a dashed line. This symbol is often used in mathematical contexts to indicate a type of mapping or transformation that is not solid or definite, or to represent a reversible or non-permanent process.
Indicating a reversible or non-permanent mapping from B to A
A \dashleftarrow B
Representing a transformation from y to x that is not solid or definite
x \dashleftarrow y
Showing a reversible process between two states
\text{State 1} \dashleftarrow \text{State 2}