Irrational Toric Varieties and the Secondary Polytope: Pictures


 

Motivation

The picture at right is a toric Bézier patch
(4×3 tensor product patch in R3).

Click on it for a movie, which is the motivation
for the mathematics in this talk.

Subsequent pictures on this page accompany this talk.
   
 

 

Bézier Patches

This shows the rational
normal cubic in the
standard simplex in RP3+
and its image in R2 under a
map πb.

The image is a Bézier cubic
in the plane.

The control points
are the endpoints of the
segments (control polygon).
    Here is a 3×3 tensor
product patch, showing
control points.

The 'cage' is the
3D analog of the
control polygon.
 

 

Upper Hulls and Convex Subdivisions