Chol 
Cholesky decomposition decomposes a real, symmetric (hence square), and
positive definite matrix A into A = L * L^{t}, where
L is a lower triangular matrix.

CholeskyBanachiewicz 
Cholesky decomposition decomposes a real, symmetric (hence square), and positive definite matrix
A into A = L * L^{t}, where L is a lower triangular matrix.

CholeskyBanachiewiczParallelized 

CholeskySparse 
Cholesky decomposition decomposes a real, symmetric (hence square), and positive definite matrix
A into A = L * L^{t}, where L is a lower triangular matrix.

CholeskyWang2006 
Cholesky decomposition works only for a positive definite matrix.
