The Hilbert Zonotope and a Polynomial Time Algorithm for Universal Grobner Bases
Eric Babson, Shmuel Onn, Rekha Thomas
Abstract
We provide a polynomial time algorithm for computing the universal Gröbner basis of any polynomial ideal having a finite set of common zeros in fixed number of variables. One ingredient of our algorithm is an effective construction of the state polyhedron of any member of the Hilbert scheme Hilbdn of n-long d-variate ideals, enabled by introducing the Hilbert zonotope Hdn and showing that it simultaneously refines all state polyhedra of ideals on Hilbdn.
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