7 search results - page 1 / 2 » On the Convergence of Rational Ritz Values |
SIAMMAX
2010
13 years 5 months ago
2010
Ruhe's rational Krylov method is a popular tool for approximating eigenvalues of a given matrix, though its convergence behavior is far from being fully understood. Under fair...
SIAMSC
2010
13 years 9 months ago
2010
The IDR method of Sonneveld and van Gijzen [SIAM J. Sci. Comput., 31:1035–1062, 2008] is shown to be a Petrov-Galerkin (projection) method with a particular choice of left Krylov...
SIAMMAX
2011
13 years 1 months ago
2011
We investigate an acceleration technique for restarted Krylov subspace methods for computing the action of a function of a large sparse matrix on a vector. Its effect is to ultima...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
We consider the problem of globally minimizing the sum of many rational functions over a given compact semialgebraic set. The number of terms can be large (10 to 100), the degree ...
PARA
2004
Springer
14 years 4 months ago
2004
Springer
Abstract. This paper presents a method of solving initial value problems using Euler’s method, based on the domain of interval valued functions of a real variable. In contrast to...