Changes between Initial Version and Version 2 of Ticket #23716


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Timestamp:
08/25/17 21:00:15 (4 years ago)
Author:
vdelecroix
Comment:

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  • Ticket #23716

    • Property Keywords days88 added
    • Property Summary changed from multiplication dense x sparse should not convert sparse to dense to multiplication dense x sparse should not use dense multiplication
  • Ticket #23716 – Description

    initial v2  
    1 Multiplying `(dense matrix) x (sparse matrix)` or `(sparse matrix) x (dense vector)` should not result in the conversion of the sparse matrix into a dense matrix.
     1The algorithm for the multiplications `(dense matrix) x (sparse matrix)` or `(sparse matrix) x (dense vector)` is currrently done by first converting the sparse matrix into a dense matrix and then operating on the result. See `sage.matrix.action`.