Hi, Stefan,
Quote:
> Hi,
>
> I've got a few mononomial in a list (actually it's a
> list(list())) and I'm checking if another polynomial is
> dividable by one of them. Right now im using reduce, but
> Singular complains that "_ is no standardbasis", but I'm
> shure it is, because it's a monomial.
Assume you have the ideal I= <xy^2, x^2y> in the ring K[x,y].
When you compute I=std(I), the attribute "IsSB" of the ideal I will be set to 1. (You can check it executing "attrib(I);")
Otherwise, even is it is a standard basis, you will get such warning.
The right solution would be to gather monomials you need in the ideal, compute its standard basis and then perform reductions.
Quote:
> Any workaround/other way to check dividability.
Depending on what you need, you can use functions "simplify", division "/" or "coef". Please consult the Singular manual for details.
Quote:
>
> Regards
Have fun,
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