| cPCG-package | Efficient and Customized Preconditioned Conjugate Gradient Method for Solving System of Linear Equations |
| cgsolve | Conjugate gradient method |
| cPCG | Efficient and Customized Preconditioned Conjugate Gradient Method for Solving System of Linear Equations |
| icc | Incomplete Cholesky Factorization |
| pcgsolve | Preconditioned conjugate gradient method |
| preconditioner | Preconditioned conjugate gradient method |