Combination of Jacobi–Davidson and conjugate gradients for the partial symmetric eigenproblem

Asymptotic Convergence of Conjugate Grad

Asymptotic Convergence of Conjugate Gradient Methods for the Partial Symmetric Eigenproblem

✍ Luca Bergamaschi; Giuseppe Gambolati; Giorgio Pini 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 149 KB

Recently an efficient method (DACG) for the partial solution of the symmetric generalized eigenproblem Ax = λBx has been developed, based on the conjugate gradient (CG) minimization of the Rayleigh quotient over successive deflated subspaces of decreasing size. The present paper provides a numerical