Hi Bruce,
On Thu, Sep 02, 2010 at 03:33:21AM -0700, Bruce wrote:
I am trying to construct the fee module on the set of instances of a
class G.
I start with
M = CombinatorialFreeModule(QQ,G)
If f,g are instances of G I then continue with
a = M.monomial(f)
b = M.monomial(g)
and I can then form a+a , a+b etc. and a - a is indeed 0.
However if I try 2*a I get a TypeError
If I try
M = CombinatorialFreeModule(QQ,NonNegativeIntegers())
a = M.monomial(3)
then 2*a seems to work fine.
Can anyone tell me what I am doing wrong and/or explain this?
I'm in a hurry. so this is only a very short answer. It is maybe a bug but in
the usual usage in
M = CombinatorialFreeModule(QQ,G)
G is supposed to be an Parent (mathematical object) and ont a class (python
stuff). I'm not sure if this is enforced or not.
Cheers,
Florent
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