@staticmethod
def min(a, b):
    """ Generates the expression for min(a, b)

        :param a: one value. Can be a number or a variable
        :type a: str
        :param b: the other value
        :type b: str
        :return: max number
        :rtype: str
        """
    return '({a}>{b})?{b}:{a}'.format(a=a, b=b)
