Results 121 to 130 of about 78,319 (219)

Approximate Exponential Integrators for Time-Dependent Equation-of-Motion Coupled Cluster Theory. [PDF]

open access: yesJ Chem Theory Comput, 2023
Williams-Young DB   +3 more
europepmc   +1 more source

Regularization properties of Krylov subspace methods

open access: yes, 2019
The aim of this thesis is to study and describe regularizing properties of iterative Krylov subspace methods for finding a solution of linear algebraic ill- posed problems contaminated by white noise. First we explain properties of this kind of problems,
Kučerová, Andrea
core  

Convergence of restarted Krylov subspaces to invariant subspaces

open access: yes, 2016
The performance of Krylov subspace eigenvalue algorithms for large matrices can be measured by the angle between a desired invariant subspace and the Krylov subspace. We develop general bounds for this convergence that include the effects of polynomial restarting and impose no restrictions concerning the diagonalizability of the matrix or its degree of
Beattie, C, Embree, M, Rossi, J
openaire   +1 more source

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