Theoretical results

This generalize the previous results of [NgRe06] (α=0):

Our Main Theorem [DuNg12] (informal)

Under α-weak-orthogonality condition, some local minima of 4th order momentum of a sphered-zonotope are O(αk)-close to its spanning vectors

Theorem [NgRe06] (restated)

The global minima of 4th order momentum of an hypercubes, match exactly its spanning vectors