Complex numbers as Matrices
www.sosmath.com › matrix › complexMa,b+ Mc,d= Ma+c,b+d. In other words, if we add two elements of the set ,we still get a matrix in . In particular, we have. -Ma,b= M-a,-b. 2. Multiplication by a number:We have. So a multiplication of an element of and a number gives a matrix in . 2. Multiplication:For any real numbers a, b, c, and d, we have.