#11726: Implement univariate Laurent polynomial rings
Fixed doctests in Hecke algebras and KL polys.
Fixes to doctest in Hall algebra and Laurent polynomial ring.
More fixes to doctests, coercion, and division.
trac #11726 fixed one failing doctest
trac #11726 fix one doctest in the en tutorial for kazhdan lusztig polys
trac #11726 correct the other doctest in tutorial
Trac #11726: Implement univariate Laurent polynomial ring & elements

At present, the implementation of univariate Laurent polynomials is
(self-admittedly) in a sorry state:

{{{
    ############################################################
    # This should later get moved to an actual single variate  #
    # implementation with valuation tracking,                  #
    # but I don't want to right now.                           #
    ############################################################
    # We need to come up with a name for the inverse that is easy to
search
    # for in a string *and* doesn't overlap with the name that we
already have.
    # For now, I'm going to use a name mangling with checking method.
}}}

This should be fixed.

Apply: [attachment:trac_11726-univariate_Laurent_polynomials-ts.patch​]

URL: http://trac.sagemath.org/11726
Reported by: boothby
Ticket author(s): Tom Boothby
Reviewer(s): Travis Scrimshaw, Ralf Stephan