👉 Quadrivalency is a mathematical concept that refers to the ability of a number to be expressed as a sum of two or more integers. This means that a number can be written as a combination of two or more different integers, such as 3 + 7 = 10 or -2 + 5 = 3. For example: - 3 is a quadrivalency because it can be expressed as the sum of 3 and -2. - 10 is not
