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4.20 smatrix
An experimental type:
Objects of type smatrix are (sparse) matrices with polynomial entries.
Like polynomials they can
only be defined or accessed with respect to a basering.
Objects of type smatrix can be converted to and from matrix and module .
Operations are + , - , * , == , <> .
Functions are ncols , nrows , std , transpose , tensor .
Additional flatten(m) and system("unflatten",m,col) .
Resizing can be done via smatrix(m,r,c) where m is of type module or smatrix .
Access to single entries: m[i,j]
See
flatten;
matrix;
module;
ncols;
nrows;
ring;
std;
tensor;
transpose.
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