sympy/sympy — pull request #2770 by skirpichev (2014-01-14 09:57:48+00:00)
Title: Implement ge/gt/le/lt operators for FiniteSet

See interface description of builtin `frozenset` here:
http://docs.python.org/3/library/stdtypes.html#set

And unXFAIL some core tests in test_args.py and test_containers.py.