Title
How to Integrate a Polynomial over a Simplex
Abstract
This paper starts by settling the computational complexity of the problem of integrating a polynomial function f over a rational simplex. We prove that the problem is NP-hard for arbitrary polynomials via a generalization of a theorem of Motzkin and Straus. On the other hand, if the polynomial depends only on a fixed number of variables, while its degree and the dimension of the simplex are allowed to vary, we prove that integration can be done in polynomial time. As a consequence, for polynomials of fixed total degree, there is a polynomial time algorithm as well. We explore our algorithms with some experiments. We conclude the article with extensions to other polytopes and discussion of other available methods.
Year
DOI
Venue
2011
10.1090/S0025-5718-2010-02378-6
MATHEMATICS OF COMPUTATION
Keywords
DocType
Volume
polynomial time,symbolic computation,computational complexity
Journal
80
Issue
ISSN
Citations 
273
0025-5718
25
PageRank 
References 
Authors
2.06
8
5
Name
Order
Citations
PageRank
Velleda Baldoni1394.82
Nicole Berline2293.31
Jesús A. De Loera335742.24
Matthias KöPpe419120.95
Michèle Vergne5598.21