Le 27/02/2019 à 15:29, Jeroen Demeyer a écrit :
On 2019-02-27 15:25, Daniel Krenn wrote:
Can I savely assume that S.an_element() of something S (within SageMath)
returns an element different from S.zero() if possible (meaning if there
are nonzero elements in S)?
Personally, I wouldn't assume anything.
Neither do I. The specification of an_element is supposed to be:
Return an element if the parent is not empty and raises an
EmptySetError otherwise
Vincent
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