#19870: Cythonize matrix group elements
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Reporter: tscrim | Owner: tscrim
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: cython | Resolution:
Keywords: matrix group, | Merged in:
elements | Reviewers:
Authors: Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | 29f72539754e8efba97deb07a93d735af559a552
public/groups/cythonize_matrix_group_element-19870| Stopgaps:
Dependencies: |
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Comment (by vdelecroix):
Why not
{{{
try:
M = M._invert_unit()
except AttributeError:
M = ~M
if M.base_ring() is not parent.base_ring():
M = M.change_ring(parent.base_ring())
}}}
That would let the possibility for other rings/sparse matrices to
implement an `_invert_unit` if appropriate. Though, if somebody changes
the name of `_invert_unit` it will not be discovered. An alternative would
be to implement a naive `_invert_unit` directly as a matrix method
(basically following what you did).
--
Ticket URL: <http://trac.sagemath.org/ticket/19870#comment:8>
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