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Convexity Preserving Interpolation by Algebraic Curves and Surfaces

D. Levin
E. Nadler
Journal / Anthology

Numerical Algorithms
Year: 1995
Volume: 9
Page range: 113-139

The problem of interpolation by a convex curve to the vertices of a convex polygon is considered. A natural 1-parameter family of C algebraic curves solving this problem is presented. This is extended to a solution of a general Hermite-type problem, in which the curve also interpolates to one or two prescribed tangents at any desired vertices of the polygon. The construction of these curves is a generalization of well known methods for generating conic sections. Several properties of this family of algebraic curves are discussed. In addition, the method is generalized to convex C interpolation of strictly convex data sets in R3 by algebraic surfaces.

*Mathematics > Geometry > Plane Geometry
*Mathematics > Geometry > Surfaces