QMR: a quasi-minimal residual method for non-Hermitian linear systems.
QR Factorization of Toeplitz Matrices.
QR factorizations using a restricted set of rotations.
QR in two dimensions.
Quadratic convergence bounds of scaled iterates by the serial Jacobi methods for indefinite Hermitian matrices.
Quadratically constrained least squares and quadratic problems.
Quantum dynamical entropy and an algorithm by Gene Golub.
Quasi-boundary value method for non-well posed problem for a parabolic equation with integral boundary condition.
Quasi-Monte Carlo Methods for some Linear Algebra Problems. Convergence and Complexity
We present quasi-Monte Carlo analogs of Monte Carlo methods for some linear algebra problems: solving systems of linear equations, computing extreme eigenvalues, and matrix inversion. Reformulating the problems as solving integral equations with a special kernels and domains permits us to analyze the quasi-Monte Carlo methods with bounds from numerical integration. Standard Monte Carlo methods for integration provide a convergence rate of O(N^(−1/2)) using N samples. Quasi-Monte Carlo methods...
Quasi-Newton preconditioners for the inexact Newton method.