Changes between Initial Version and Version 1 of Ticket #11595


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Timestamp:
07/24/11 21:04:01 (2 years ago)
Author:
rbeezer
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  • Ticket #11595

    • Property Authors changed from to Rob Beezer

  • Ticket #11595 – Description

    initial v1  
    994.  Documentation has been improved. 
    1010 
    11 5.  If basis matrices of eigenspaces over QQbar are hanging, then #11544 might need to be a dependency.  Strictly speaking it is not required to build, but could be needed to pass doctests. 
     115.  Only about 4 very minor changes were required outside of the matrix code to make doctests pass. 
    1212 
    13 6.  One change in behavior - the new `format` command, and its default value of "all".  This will cause eigenspaces of matrices over the rationals formed with algebraic numbers from `QQbar`.  This is consistent with how the `eigenvalues()` method behaves for rational matrices.  When it is not possible to compute eigenvalues this way, the failure is graceful and suggests the `format='galois'` option.  This required just one change outside of the eigen-stuff code (eigenspaces of graphs).  See discussion at: 
     136.  If basis matrices of eigenspaces over QQbar are hanging, then #11544 might need to be a dependency.  Strictly speaking it is not required to build, but could be needed to pass doctests. 
     14 
     157.  One change in behavior - the new `format` command, and its default value of "all".  This will cause eigenspaces of matrices over the rationals formed with algebraic numbers from `QQbar`.  This is consistent with how the `eigenvalues()` method behaves for rational matrices.  When it is not possible to compute eigenvalues this way, the failure is graceful and suggests the `format='galois'` option.  This required just one change outside of the eigen-stuff code (eigenspaces of graphs).  See discussion at: 
    1416http://groups.google.com/group/sage-devel/browse_thread/thread/c67266a5581abff9/