74 citations · 88 across the 5 of their papers we have counts for
5 papers
Centrality of nodes in Federated Byzantine Agreement Systems
André Gaul, Jörg Liesen
The federated Byzantine agreement system (FBAS) is a consensus model introduced by Mazières in 2016 where the participating nodes conceptually form a network, with links between th…
Mathematical Analysis and Algorithms for Federated Byzantine Agreement Systems
André Gaul, Ismail Khoffi, Jörg Liesen +1
We give an introduction to federated Byzantine agreement systems (FBAS) with many examples ranging from small "academic" cases to the current Stellar network. We then analyze the m…
Preconditioned Recycling Krylov subspace methods for self-adjoint problems
André Gaul, Nico Schlömer
The authors propose a recycling Krylov subspace method for the solution of a sequence of self-adjoint linear systems. Such problems appear, for example, in the Newton process for s…
A framework for deflated and augmented Krylov subspace methods
André Gaul, Martin H. Gutknecht, Jörg Liesen +1
We consider deflation and augmentation techniques for accelerating the convergence of Krylov subspace methods for the solution of nonsingular linear algebraic systems. Despite some…
Function call overhead benchmarks with MATLAB, Octave, Python, Cython and C
André Gaul
We consider the overhead of function calls in the programming languages MATLAB/Octave, Python, Cython and C. In many applications a function has to be called very often inside a lo…