In
geometry, a
position or
position vector, also known as
location vector or
radius vector, is a
Euclidean vector that represents the position of a point
P in space in relation to an arbitrary reference
origin O. Usually denoted
x,
r, or
s, it corresponds to the straight-line distances along each axis from
O to
P:
The term "position vector" is used mostly in the fields of differential geometry, mechanics and occasionally vector calculus.