• # JDCG

• Referenced in 41 articles [sw12540]
• eigenproblems. It implements the Jacobi-Davidson method with preconditioned conjugate gradient solution of the arising...
• # lobpcg.m

• Referenced in 146 articles [sw24008]
• algorithm, we advocate the standard preconditioned conjugate gradient method for finding an eigenvector ... method. Finally, direct numerical comparisons with the Jacobi-Davidson method show that our method...
• # NSPCG

• Referenced in 35 articles [sw00636]
• since it contains many nonsymmetric preconditioned conjugate gradient procedures. It is designed to solve large ... available are point methods such as Jacobi, incomplete $LU$ decomposition and symmetric successive overrelaxation ... large collection of accelerators such as conjugate gradient (CG), Chebyshev (SI, for semi-iterative), generalized...
• # SuSy 2

• Referenced in 18 articles [sw09258]
• SuSy algebra of differential operators, compute the gradients of given SuSy Hamiltonians and to obtain ... SuSy soliton approach, as for example the conjugation of a given SuSy operator, the computation ... checking of the validity of the Jacobi identity for some SuSy Hamiltonian operators...