This brings it to parity with its dense counterpart. The is_hermitian() method for sparse RDF/CDF matrices now uses a small tolerance by default to mitigate numerical issues. The Cholesky decomposition for sparse RDF/CDF matrices now uses a specialized fast algorithm when cvxopt is available. Sage now has an optional package providing Mathics, a free (open-source) general-purpose computer algebra system featuring Mathematica-compatible syntax and functions, and an interface to it. Interface to Mathics, a free implementation of the Wolfram language This was deprecated since Sage 4.0, although a bug prevented the deprecation warning from being issued in Sage versions 8.4 to 9.3. Symbolic expressions can no longer be called with positional arguments.
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