| ca2cm | Covariance array to covariance matrix |
| cm2ca | Covariance matrix to covariance array |
| covCSE | Empirical Bayes core shrinkage covariance estimator |
| covKCD | Kronecker-core covariance decomposition |
| lmvgamma | Log multivariate gamma function |
| mcov | Matrix-variate covariance matrix |
| msqrt | Symmetric square root of a matrix |
| msqrtInv | Inverse symmetric square root of a matrix |