Rather than "lying" or expecting the system prove that "x^2+1 is
irreducible in R" I think  the usual approach in Axiom would be to
introduce a declaration in the algebra library to this effect, i.e.
introduce a new category such as  "Irreducible(x^2+1,R)".

On Fri, Mar 19, 2010 at 3:31 AM, Ralf Hemmecke <r...@hemmecke.de> wrote:
>> I think that to understand Waldek's point it is import to look at
>> ComplexCategory.
>
>>      if R has Field then        -- this is a lie; we must know that
>>        Field                    -- x^2+1 is irreducible in R
>
> Exactly.
>
> If we want to do mathematics, why do you distribute lies? Unfortunately, we
> probably cannot easily change it, but I am much in favour of a consistent
> algebra library.
>
> Ralf
>
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