Hi
On 21.02.2015 21:57, Simon King wrote:
On 2015-02-21, Simon King <simon.k...@uni-jena.de> wrote:
If ZZ does not coerce into the parent of your element, then the parent
is not a (unitary) ring.
PS:
And if it is not a ring, then many things don't work as smoothly as they
should.
For example, if P is a commutative additive group with an element x, then most
people would expect that x+0 should be equal to x. Reason: The ADDITIVE
group of ZZ coerces into P.
I'm confused. Why does the additive group of ZZ coerce into P?
Best
Jonas
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