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JSC
2007
152views more  JSC 2007»
13 years 11 months ago
Complete involutive rewriting systems
Given a monoid string rewriting system M, one way of obtaining a complete rewriting system for M is to use the classical Knuth-Bendix critical pairs completion algorithm. It is we...
Gareth A. Evans, Christopher D. Wensley
JSC
2007
61views more  JSC 2007»
13 years 11 months ago
Set-theoretic solutions of the Yang-Baxter equation, graphs and computations
Abstract. We extend our recent work on set-theoretic solutions of the YangBaxter or braid relations with new results about their automorphism groups, strong twisted unions of solut...
Tatiana Gateva-Ivanova, Shahn Majid
JSC
2007
79views more  JSC 2007»
13 years 11 months ago
Computation of bases of free modules over the Weyl algebras
A well-known result due to J. T. Stafford asserts that a stably free left module M over the Weyl algebras D = An(k) or Bn(k) − where k is a field of characteristic 0 − with ...
Alban Quadrat, Daniel Robertz
JSC
2007
104views more  JSC 2007»
13 years 11 months ago
Summation algorithms for Stirling number identities
We consider a class of sequences defined by triangular recurrence equations. This class contains Stirling numbers and Eulerian numbers of both kinds, and hypergeometric multiples...
Manuel Kauers
JSC
2007
104views more  JSC 2007»
13 years 11 months ago
Generating all polynomial invariants in simple loops
Enric Rodríguez-Carbonell, Deepak Kapur
JSC
2007
80views more  JSC 2007»
13 years 11 months ago
Improved dense multivariate polynomial factorization algorithms
We present new deterministic and probabilistic algorithms that reduce the factorization of dense polynomials from several to one variable. The deterministic algorithm runs in sub-...
Grégoire Lecerf
JSC
2007
130views more  JSC 2007»
13 years 11 months ago
The Moufang loops of order 64 and 81
We classify Moufang loops of order 64 and 81 up to isomorphism, using a linear algebraic approach to central loop extensions. In addition to the 267 groups of order 64, there are ...
Gábor P. Nagy, Petr Vojtechovský
JSC
2007
72views more  JSC 2007»
13 years 11 months ago
Linear syntax for communicating elementary mathematics
We consider computer aided assessment (CAA) of mathematics in which a student provides an answer in the form of a mathematical expression. A common approach is for CAA system impl...
Christopher J. Sangwin, P. Ramsden
JSC
2007
77views more  JSC 2007»
13 years 11 months ago
Mathscape and molecular integrals
Abstract: This note describes the current reimplementation of mathscape that supports all the calculations in my paper ”Mathscapeand Molecular Integrals”.
Michael P. Barnett
JSC
2007
71views more  JSC 2007»
13 years 11 months ago
Rational invariants of a group action. Construction and rewriting
Geometric constructions applied to a rational action of an algebraic group lead to a new algorithm for computing rational invariants. A finite generating set of invariants appear...
Evelyne Hubert, Irina A. Kogan