(left, right)
return get_env().formula_manager.Minus(left, right)
r""".. math:: l - r
r""".. math:: l - r
r .. math :: l - r
def Minus(left, right):
    r""".. math:: l - r """
    return get_env().formula_manager.Minus(left, right)
def Minus ( left , right ) : return get_env ( ) . formula_manager . Minus ( left , right )