Changes between Initial Version and Version 1 of Ticket #392, comment 5


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Timestamp:
Jan 10, 2012, 5:43:56 PM (13 years ago)
Author:
gorzel
Comment:

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  • Ticket #392, comment 5

    initial v1  
    22 Some comments and still a bug:
    33
    4  1.) There is a problem with the the sign:
     4 1.) There is a problem with the sign:
    55
    66   In the following two examples, it is not wrong but not as expected,
     
    1515> sqrfree((x-y)*(x+y),1);
    1616_[1]=-x2+y2                    // it should be x2-y2 here
    17 > sqrfree((x-y)*(x+y),3);      //
     17> sqrfree((x-y)*(x+y),3);      // OK here
    1818x2-y2
    1919
     
    2929}}}
    3030
    31   but in this prime char case a a check ''f==sqrfree(f,3)'' will fail:
     31  but in this prime char case a check ''f==sqrfree(f,3)'' will fail:
    3232
    3333
    3434{{{
    3535> ring r3=3,(x,y,z),dp;
    36 > sqrfree((x-y)*(x+y),3);
     36> sqrfree((x-y)*(x+y),3);   // BUG here
    3737-x2+y2
    3838> _ == (x-y)*(x+y);
     
    5151
    5252     Certainly, it will make some additional work to revise it again.
     53
     54 (Edit: signed. Ch. Gorzel, forget to login for this comment)