Another n-2 real numbers are the elements of the second minor diagonal in super-diagonal matrix. Discussed necessary and sufficient conditions of the unique solution of the existence, then the ...

Abstract In this paper, we present the general exact solutions of such coupled system of matrix fractional differential equations for diagonal unknown matrices in Caputo sense by using vector ...

Diagonal Estimation The usage of the three function exported by the package is very simple. First, let's create an example matrix whose diagonal is easy to estimate.

Given a square matrix mat, return the sum of the matrix diagonals. Only include the sum of all the elements on the primary diagonal and all the elements on the secondary diagonal that are not part of ...

Revealing data with intrinsically diagonal block structures is particularly useful for analyzing groups of highly correlated variables. Earlier researches based on non-negative matrix factorization ...

This paper proposes a novel shrinkage estimator for high-dimensional covariance matrices by extending the Oracle Approximating Shrinkage (OAS) of Chen et al. (2009) to target the diagonal elements of ...

A procedure is presented for rapidly computing the diagnonal elements of a large numerator relationship matrix, say $\mathbf {A}$. It also generates a lower triangular matrix, say $\mathbf {L}$, ...