What does AIJ 0 mean?
What does AIJ 0 mean? A symmetric matrix is a square matrix such that aij = aji for all i = 1,...,n and j = 1,...,m. A diagonal matrix is a square matrix such that the off-diagonal ele- ments are all equal to zero, i.e. aij = 0 for i = j. The identity matrix is a diagonal matrix with all diagonal elements equal to one. What does AIJ mean in matrices? 1. An n × m matrix A is a rectangular array of numbers with n rows and m columns. By A = (aij) we mean that aij is...