Hello Martin,looks like I did not understand correctly, what you mean by matroid and what you actually need.
However ...
I think that William Sit got it right
...you got a solution to your problem.
Are we going to meet on the workshop?
I hope so. Kind regards, Christian _______________________________________________ Axiom-developer mailing list Axiom-developer@nongnu.org http://lists.nongnu.org/mailman/listinfo/axiom-developer
