29 citations · 76 across the 17 of their papers we have counts for
3 papers · 1 filter
Block diagonal preconditioners for arrow-shaped multiple saddle-point linear systems
Luca Bergamaschi, Michele Bergamaschi
We consider multiple saddle-point linear systems with block-arrow structure. We analyze exact and inexact Schur complement based block diagonal preconditioner, by characterizing th…
Demonstration of a 10-metre-long discharge plasma source for plasma wakefield acceleration
C. Amoedo, N. Lopes, N. E. Torrado +13
The AWAKE experiment at CERN uses high-energy proton bunches to drive plasma wakefields capable of accelerating electron bunches up to hundreds of GeV in a single plasma. Realising…
Eigenvalue bounds for preconditioned symmetric multiple saddle-point matrices with block-triangular preconditioners
Luca Bergamaschi, Michele Bergamaschi, John W. Pearson
We develop eigenvalue bounds for symmetric, block-tridiagonal multiple saddle-point linear systems, preconditioned with block-triangular matrices, based on approximate Schur comple…