> I wasn't aware that Maxima looked at get(A,matrix);
It doesn't---I was thinking that doing put(A,matrix) and get(A,matrix) might be useful for building a function
that does something for symbolic matrix expressions. As for a specific example, I don't have anything in mind.
But it is possible to do things like
(%i9) put(A,[11,27],matrix_size);
(%o9) [11,27]
(%i10) get(A,matrix_size);
(%o10) [11,27]
--Barton