Changes between Initial Version and Version 1 of Ticket #15245, comment 20


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Timestamp:
Oct 8, 2013, 4:38:59 PM (9 years ago)
Author:
Darij Grinberg
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  • Ticket #15245, comment 20

    initial v1  
    11Not sure about it. {{{is_skewsymmetric}}} should be a tad slower than {{{is_alternating}}} (not seriously so -- it just calls diagonal elements twice rather than once). And I never understood what a characteristic of a ring is; chances are this is another thing not consistently understood in Sage. What we probably cannot do is ask whether the characteristic is not 2; if anything, we should ask for 2 to be invertible. But even then, I fear that excepting the {{{NotImplementedError}}} errors will ruin the speed benefits we get from unifying the code.
     2
     3Thanks, Travis and Nils, for the review and the helpful comments!