For a given set of control points,

the Bézier curve is defined by the relation
P(t)=
pi Bi,n(t) where
Bi,n(t) are Bernstein polynomials. Control points form the so-called control polygon. The

-calculus generalization of a Bézier curve, called the

-Bézier curve, is defined similarly by

, where the

are

-Bernstein polynomials. This concept was first introduced by G. M. Phillips.