(left, right)
return get_env().formula_manager.LT(left, right)
r""".. math:: l < r
r""".. math:: l < r
r .. math :: l < r
def LT(left, right):
    r""".. math:: l < r"""
    return get_env().formula_manager.LT(left, right)
def LT ( left , right ) : return get_env ( ) . formula_manager . LT ( left , right )