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4.21 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 chinrem, farey, 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
chinrem;
farey;
flatten;
matrix;
module;
ncols;
nrows;
ring;
std;
tensor;
transpose.
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