If the source matrix is 3-by-3 or smaller, then it's possible to compute the inverse using brute force. If you need the determinant of the source matrix, then using LUP decomposition (Crout or ...

For a symmetric correlation matrix, the Inverse Correlation Matrix table contains the inverse of the correlation matrix, as shown in Figure 40.14. The diagonal elements of the inverse correlation ...

We investigate and discuss when the inverse of a multivariate truncated moment matrix of a measure μ has zeros in some prescribed entries. We describe precisely which pattern of these zeroes ...