#19318: Implement inverse_of_unit for IntegerModRing
-------------------------------------+-------------------------------------
Reporter: bruno | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.9
Component: finite rings | Resolution:
Keywords: | Merged in:
Authors: Bruno Grenet | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/bruno/group_inverse_of_unit | c626f8cbf02953b94a2ca54dc0599553c0f40b47
Dependencies: | Stopgaps:
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Comment (by klee):
Why do we need this? You can use `^-1` for the same result.
{{{
sage: R=IntegerModRing(10)
sage: R(7)^-1
3
sage: R(4)^-1
---------------------------------------------------------------------------
ZeroDivisionError Traceback (most recent call
last)
...
ZeroDivisionError: Inverse does not exist.
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19318#comment:3>
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