#7530: corrects simple Laurent-polynomial bug
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Reporter: fwclarke | Owner: AlexGhitza
Type: defect | Status: new
Priority: minor | Milestone: sage-4.3
Component: algebra | Keywords: Laurent Polynomial
Work_issues: | Author: Francis Clarke
Upstream: N/A | Reviewer:
Merged: |
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It is not possible to form a polynomial ring over a Laurent polynomial
ring. This is because the function `is_integral_domain` for Laurent
polynomial rings lacks the optional parameter `proof=True` (unlike every
other instance of `is_integral_domain`). The patch corrects this
omission, which solves the problem.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7530>
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