SymPy 0.6.6
20 Dec 2009
many documentation improvements, including docstrings and doctests
new assumptions system (See assumptions documentation for more information or have a look at Fabian’s blog.)
improvements to test runner
printing improvements (especially LaTeX, but also mathml and pretty printing)
discriminant of polys
block diagonal methods for matrices
vast improvements to solving of ODEs (See ODE documentation for full details or Aaron’s blog).
logcombine function
improvements to sets
better trigonometric simplification
improvements to piecewise functions
improvements to solve() and nsolve()
improvements to as_numer_denom()
much better quartic and cubic polynomial rootfinding
code refactoring and cleanup
physics: coupled clusters and wick expansion
matrices: symbolic QR solving
mpmath updated
pyglet updated
many, many bug fixes and small improvements