Title
Newton Polytopes and Witness Sets.
Abstract
We present two algorithms that compute the Newton polytope of a polynomial defining a hypersurface H in C^n using numerical computation. The first algorithm assumes that we may only compute values of f - this may occur if f is given as a straight-line program, as a determinant, or as an oracle. The second algorithm assumes that H is represented numerically via a witness set. That is, it computes the Newton polytope of H using only the ability to compute numerical representatives of its intersections with lines. Such witness set representations are readily obtained when H is the image of a map or is a discriminant. We use the second algorithm to compute a face of the Newton polytope of the L\"uroth invariant, as well as its restriction to that face.
Year
DOI
Venue
2014
10.1007/s11786-014-0189-6
Mathematics in Computer Science
Keywords
Field
DocType
Hypersurface, Polynomial system, Newton polytope, Numerical algebraic geometry, Witness set
Discrete mathematics,Combinatorics,Polynomial,Discriminant,Numerical algebraic geometry,Polytope,Hypersurface,Invariant (mathematics),Witness set,Mathematics,Computation
Journal
Volume
Issue
ISSN
8
2
1661-8270
Citations 
PageRank 
References 
1
0.58
13
Authors
2
Name
Order
Citations
PageRank
Jonathan D. Hauenstein126937.65
Frank Sottile2265.10