\downharpoonright
The \downharpoonright symbol is used to represent a downward-pointing harpoon with the barb on the right. It is often used in mathematical contexts to denote specific types of mappings or transformations, particularly in vector calculus or physics.
Represents a mapping or transformation from A to B with a specific directionality.
A \downharpoonright B
Indicates a vector transformation or operation from vector v to vector w.
\vec{v} \downharpoonright \vec{w}
Denotes a transformation T from vector space V to vector space W.
T: V \downharpoonright W