^ From:

^ Subject:

Dear All,

We have the integral group ring ZA of the finitely generated abelian

group A. The abelian group is given by means of a presentation,

but will NOT necessarily be a standard presentation. (In practice it

will be the presentation obtained by abelianising a presentation of a

non abelian group G. eg, If G = <x, y; x^5y^3x^2y^-1> then

A = <X, Y ; XY=YX, X^7Y^2> )

We have an m-by-n matrix M with entries from ZA. Then for each

1 < k =< min{m, n}

we want to compute the determinants of all the k-by-k submatrices

of M. Attempting to call the function DeterminantMat for k > 2,

however, produces an error. Can anyone suggest a different

method to find such determinants?

Many Thanks

Andrea

---------------

Andrea Donafee

Research Student

Department of Computing and Information Systems

University of Luton

andrea.donafee@luton.ac.uk

> < [top]