Re: [sage-devel] the default behaviour of reduce() for ideals

2012-08-06 Thread Marco Streng
I'm just letting the list know that there is a patch at http://trac.sagemath.org/sage_trac/ticket/13345 deprecating the default implementation of "Ideal_generic.reduce" in favour of NotImplementedError. Op maandag 30 juli 2012 11:36:06 UTC+2 schreef Marco Streng het volgende: > > 2012/7/30 Thoma

Re: [sage-devel] the default behaviour of reduce() for ideals

2012-07-30 Thread Marco Streng
2012/7/30 Thomas Feulner : > Hi, > > in the definition of a QuotientRing there is the following assumption > > ASSUMPTION: > > ``I`` has a method ``I.reduce(x)`` returning the normal form > of elements `x\in R`. In other words, it is required that > ``I.reduce(x)==I.reduce(y)`` `\if

[sage-devel] the default behaviour of reduce() for ideals

2012-07-30 Thread Thomas Feulner
Hi, in the definition of a QuotientRing there is the following assumption ASSUMPTION: ``I`` has a method ``I.reduce(x)`` returning the normal form of elements `x\in R`. In other words, it is required that ``I.reduce(x)==I.reduce(y)`` `\iff x-y \in I`, and ``x-I.reduce(x) in I