SymPy 0.6.5

17 Jul 2009

• Geometric Algebra Improvements

  • Upgrade GA module with left and right contraction operations

  • Add intersection test for the vertical segment, reimplementation of convex_hull

• Implement series() as function

• Core improvements

  • Refactor Number.eval_power

  • fix bugs in Number.eval_power

• Matrix improvements:

  • Improve jacobian function, introduce vec and vech

• Solver improvements:

  • solutions past linear factor found in tsolve

  • refactor sympy.solvers.guess_solve_strategy

  • Small cleanups to the ODE solver and tests

  • Fix corner case for Bernoulli equation

• Improvements on partial differential equations solvers

  • Added separation of variables for PDEs

• Expand improvements

  • Refactoring

  • exp(x) exp(y) is no longer automatically combined into exp(x+y), use powsimp for that

• Documentation improvements:

  • Test also documentation under doc/

  • Added many docstrings

  • Fix Sphinx complaints/warnings/errors

  • Doctest coverage

• New logic module

  • Efficient DPLL algorithm

• LaTeX printer improvements:

  • Handle standard form in the LaTeX printer correctly

  • Latex: print_Mul fix (sympy/sympy#4381)

  • Robust printing of latex sub and superscripts

  • sorting print_Add output using a main variable

  • Matrix printing improvements

• MathML printing improvements:

  • MathML’s printer extended

• Testing framework improvements

  • Make tests pass without the “py” module

• Polynomial module improvements:

  • Fixed subresultant PRS computation and ratint()

  • Removed old module sympy.polynomials

• limit fixes:

  • Compute the finite parts of the limit of a sum by direct substitution

• Test coverage script

• Code quality improvements (remove string exceptions, code quality test improvements)

• C code generation

• Update mpmath