'Returns True if \'self\' and \'other\' are disjoint
Examples
>>> from sympy import Interval
>>> Interval(0, 2).is_disjoint(Interval(1, 2))
False
>>> Interval(0, 2).is_disjoint(Interval(3, 4))
True
References
.. [1] http://en.wikipedia.org/wiki/Disjoint_sets'

def is_disjoint(self, other):

    return (self.intersect(other) == S.EmptySet)
