Changes between Initial Version and Version 1 of Ticket #8276


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Timestamp:
02/16/10 22:15:55 (11 years ago)
Author:
hivert
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  • Ticket #8276

    • Property Summary changed from The one of MatrixSpace can be changed ! to Make the one(), identity_matrix() and zero_matrix() cached and immutable.
  • Ticket #8276 – Description

    initial v1  
     1After I found the following bug, it was decided on sage-devel that in a {{{MatrixSpace}}} the methods {{{.one()}}}, {{{.identity_matrix()}}} and {{{.zero_matrix()}}} should returns a cached immutable matrix. I had to update sage's library accordingly.
     2
    13{{{
    24sage: A = MatrixSpace(ZZ, 3)
     
    1113[0 0 1]
    1214}}}
    13 Indeed it is mutable an cached !