Changes between Initial Version and Version 1 of Ticket #14403, comment 7


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Timestamp:
07/24/13 06:29:42 (9 years ago)
Author:
nbruin
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  • Ticket #14403, comment 7

    initial v1  
    1 Please look at the sage-devel thread referenced. Part of the problem here is the use of the routine "polynomial", which is dodgy. You know that the expression returned by maxima's charpol is already presented as a polynomial in the (better unique!) variable used to do the expansion. The code proposed in the ticket is both more robust and faster.
     1Please look at the sage-devel thread referenced. Part of the problem here is the use of the routine "polynomial", which is dodgy for examples like:
     2{{{matrix([[y^(1/2),0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]]) }}}
     3You know that the expression returned by maxima's charpol is already presented as a polynomial in the (better unique!) variable used to do the expansion. The code proposed in the ticket is both more robust and faster.