\xrightharpoonup{abc}The command \xrightharpoonup{abc} is used to create an extensible right harpoon arrow over the text 'abc'. This is typically used in mathematical notation to denote vectors or transformations, where the arrow indicates directionality or movement. The harpoon style is often used in physics and engineering to represent vector quantities.
Vector notation for a vector 'v' with a right harpoon arrow.
\xrightharpoonup{v}Denoting a force vector 'F' in physics, indicating direction.
\xrightharpoonup{F} = maTransformation of a state 'psi' to 'phi' with directionality indicated by the harpoon.
\xrightharpoonup{\psi} = \phi