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MOC
2002
120views more  MOC 2002»
10 years 2 months ago
Analysis of iterative methods for saddle point problems: a unified approach
In this paper two classes of iterative methods for saddle point problems are considered: inexact Uzawa algorithms and a class of methods with symmetric preconditioners. In both cas...
Walter Zulehner
MOC
2002
90views more  MOC 2002»
10 years 2 months ago
Derivative superconvergent points in finite element solutions of harmonic functions--- A theoretical justification
Finite element derivative superconvergent points for harmonic functions under local rectangular mesh are investigated. All superconvergent points for the finite element space of an...
Zhimin Zhang
MOC
2002
107views more  MOC 2002»
10 years 2 months ago
Convergence of the shifted QR algorithm for unitary Hessenberg matrices
This paper shows that for unitary Hessenberg matrices the QR algorithm, with (an exceptional initial-value modification of) the Wilkinson shift, gives global convergence; moreover,...
Tai-Lin Wang, William B. Gragg
MOC
2002
101views more  MOC 2002»
10 years 2 months ago
Global and uniform convergence of subspace correction methods for some convex optimization problems
This paper gives some global and uniform convergence estimates for a class of subspace correction (based on space decomposition) iterative methods applied to some unconstrained con...
Xue-Cheng Tai, Jinchao Xu
MOC
2002
144views more  MOC 2002»
10 years 2 months ago
Convergence rate analysis of an asynchronous space decomposition method for convex Minimization
Abstract. We analyze the convergence rate of an asynchronous space decomposition method for constrained convex minimization in a reflexive Banach space. This method includes as spe...
Xue-Cheng Tai, Paul Tseng
MOC
2002
135views more  MOC 2002»
10 years 2 months ago
A fast spherical harmonics transform algorithm
The spectral method with discrete spherical harmonics transform plays an important role in many applications. In spite of its advantages, the spherical harmonics transform has a dr...
Reiji Suda, Masayasu Takami
MOC
2002
131views more  MOC 2002»
10 years 2 months ago
Some baby-step giant-step algorithms for the low hamming weight discrete logarithm problem
In this paper, we present several baby-step giant-step algorithms for the low hamming weight discrete logarithm problem. In this version of the discrete log problem, we are require...
Douglas R. Stinson
MOC
2002
90views more  MOC 2002»
10 years 2 months ago
Explicit bounds and heuristics on class numbers in hyperelliptic function fields
Abstract. In this paper, we provide tight estimates for the divisor class number of hyperelliptic function fields. We extend the existing methods to any hyperelliptic function fiel...
Andreas Stein, Edlyn Teske
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