polyadic.m

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Creates an object of a polyadic class.

Syntax

    p=polyadic(cores)

Description

A polyadic is a matrix formed by a Kronecker product, with those products stored unopened. For example,

                       cores={{A,B,C},{D,E}}

corresponds to A(x)B(x)C + D(x)E matrix. Any multiplicative action by this matrix may be computed without opening the Kronecker products. This can save orders of magnitude in CPU time.

Arguments

        cores -    a cell array of cell arrays of matrices
                   whose Konecker products make up the mat-
                   rix of interest.

Outputs

        p     -    a polyadic representation of a matrix 
                   that behaves in many respects like the
                   matrix it represents.

Notes

Nested polyadics are permitted - the input matrices may be polyadics themselves.

See also

kronm.m


Version 2.1, authors: Ilya Kuprov