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510 Mathematik (328)
310 Sammlungen allgemeiner Statistiken (1)
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DDC
510 Mathematik (328)
310 Sammlungen allgemeiner Statistiken (1)
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  • edoc-Server Home
  • Schriftenreihen und Sammelbände
  • Fakultäten und Institute der HU
  • Institut für Mathematik
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  • Fakultäten und Institute der HU
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2005-11-09Buch
Consistent initial values for DAE systems in circuit simulation 
Schwarz, Diana Estévez
One of the difficulties of the numerical integration methods for differential-algebraic equations (DAEs) is computing consistent initial values before starting the integration, i.e. calculating values that satisfy the given ...
2005-11-09Buch
Analyzing the stability behaviour of DAE solutions and their approximations 
März, Roswitha; Santiesteban, Antonio R. Rodríguez
New stability results are proved for linear index-2 differential algebraic equations (DAE). They are obtained by means of an improved projector decoupling. On the background of logarithmic norms related to invariant ...
2005-11-09Buch
Topological analysis for consistent initialization in circuit simulation 
Schwarz, Diana Estévez
One of the difficulties of the numerical integration methods for differential-algebraic equations (DAEs) is the computation of consistent initial values before starting the integration, i.e., to calculate values that satisfy ...
2005-11-10Buch
The semistatic limit for Maxwell's equations in an exterior domain 
Jochmann, Frank
This paper provides a $L^p$-theory for the Maxwell-system in the semistatic limit case in an exterior domain. The problem under consideration is of mixed type, since the possibly nonlinear electric conductivity vanishes ...
2005-11-11Buch
Global convergence of multidirectional algorithms for unconstrained optimization in normed spaces 
Gómez, J. A.; Romero, M.
Global convergence theorems for a class of descent methods for unconstrained optimization problems in normed spaces, using multidirectional search, are proved. Exact and inexact search are considered and the results allow ...
2005-11-09Buch
Linear differential algebraic equations of index 1 and their adjoint equations 
Balla, Katalin; März, Roswitha
For linear differential algebraic equations of tractability index 1 the notion of the adjoint equation is analysed in full detail. Its solvability is shown at the lowest possible smoothness. The fundamental matrices of ...
1998-02-12Buch
New embaddings for nonlinear multiobjective optimization problems I 
Guddat, Jürgen; Vazquez, Francisco Guerra; Nowack, Dieter
In a dialogue procedure the decision maker has to determine in each step the aspiration and reservation level expressing his wishes (goals). This leads to an optimization problem wich is not easy to solve in the nonconvex ...
1998-01-30Buch
Effective solutions of Clebsch and C. Neumann systems 
Zhivkov, Angel; Christov, Ognyan
We solve in Riemann theta functions the classical Clebsch system and its particular case - the C. Neumann system. Going from a new Lax representation (with rational parameter) we work out the solutions. Separately, using ...
1999-06-02Buch
Restriction of stable rank two vector bundles in arbitrary characteristic 
Hein, Georg
Let X be a smooth variety defined over an algebraically closed field of arbitrary characteristic and H be a very ample divisor on X. We show that for a semistable X-bundle E of rank two, there exists an integer m depending ...
2005-11-11Buch
On the criterion of asymptotical stability for index-1 tractable DAEs 
Shtykel, Tatyana
This paper considers the index-1 tractable differential-algebraic equation. The Lyapunov stability of the trivial solution is discussed. As a criterion of the asymptotical stability we propose a numerical parameter æ(A,B) ...
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