>
> Translation, if it's not clear. It got a coercion map f, tried to
> call f(x), and f(x) returned None which is clearly a bug for whoever
> implemented the morphism in question.
>
That helped me track it down to
{{{
sage: X = Spec(ZZ)
sage: H = Homset(X, X)
sage: H(X.identity_morphism())
}}}
Note the absence of output from the last command -- that's the None
that's creating all the trouble. OK, I think I can fix this now.
Robert and William, thanks for the help!
Alex
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne
-- Australia -- http://www.ms.unimelb.edu.au/~aghitza/
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