#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 tscrim):
At some point we do have to make a copy of the underlying matrix, and we
can't modify `self._matrix`. It turns out that `_invert_unit` is only
applicable to dense matrices over `\ZZ`, but it deserves a special case
since checking if the base ring (in python) is less than 100 ns on my
machine. I also made sure that the result lives in the base ring it should
(which covers the sparse `\ZZ` case).
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Ticket URL: <http://trac.sagemath.org/ticket/19870#comment:7>
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