-product of Krylov-subspace solvers, as well as by applying L-BFGS updates. Moreover, our proposal is also suited for the solution …

-product of Krylov subspace solvers. Each preconditioner in our class is identified by setting the values of a pair of parameters …

latter was constructed by using information from a Krylov subspace method, adopted to solve the large symmetric linear system … independent of the choice of the Krylov subspace method adopted, proved to be effective also when solving sequences of slowly …