NURBS Curve
A nonuniform rational B-Spline curve defined by
where
is the order, 
are the B-Spline basis functions, 
are control points, andthe weight 
of is the last ordinate of the homogeneous point 
. These curves areclosed under perspective transformations and can represent Conic Sections exactly. See also B-Spline, Bézier Curve, NURBS Surface
References
Piegl, L. and Tiller, W. The NURBS Book, 2nd ed New York: Springer-Verlag, 1997.
- Apocalypse Number
- Apocalyptic Number
- Apodization
- Apodization Function
- Apollonius Circles
- Apollonius Point
- Apollonius' Problem
- Apollonius Pursuit Problem
- Apollonius' Theorem
- Apothem
- Apparatus Function
- Appell Hypergeometric Function
- Appell Polynomial
- Appell Transformation
- Apple
- Approximately Equal
- Approximation Theory
- Apéry's Constant
- Arakelov Theory
- Arbelos
- Arborescence
- Arboricity
- Arc
- Arch
- Archimedean Solid