Auflistung Institut für Mathematik nach Titel
Anzeige der Publikationen 196-215 von 329
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2005-10-21BuchOn life-time-distributions of some one-dimensional diffusions and related exponential families Diffusions X on the positive halfaxis with elastic killing boundary at zero and inaccessible boundary at ∞ are considered. The life-time ζ is finite and hθ(x) = Ex exp(θζ), n ≥ 0, is an θ-excessive function. The h(θ)-transforms ...
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2005-10-21BuchOn linear differential-algebraic equations and linearizations On the background of a careful analysis of linear DAEs, linearizations of nonlinear index-2 systems are considered. Finding appropriate function spaces and their topologies allows to apply the standard Implicit Function ...
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2005-11-03BuchOn linear differential-algebraic equations with properly stated leading term We consider in this work linear, time-varying differential-algebraic equations (DAEs) of the form A(t)(D(t)x(t))'+B(t)x(t)=q(t) through a projector approach. Our analysis applies in particular to linear DAEs in standard ...
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2005-11-03BuchOn linear differential-algebraic equations with properly stated leading term This paper addresses critical points of linear differential-algebraic equations (DAEs) of the form A(t)(D(t)x(t))' + B(t)x(t) = q(t) within a projector-based framework. We present a taxonomy of critical points which reflects ...
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2005-11-07BuchOn linear-quadratic optimal control problems for time-varying descriptor systems The solvability of a linear-quadratic optimal control problem in a Hilbert space for time-varying descriptor systems is established under some conditions. Unlike previous works of other authors that are devoted to ...
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2005-11-07BuchOn logarithmic norms for differential algebraic equations Logarithmic matrix norms are well known in the theory of ordinary differential equations (ODEs) where they supply estimates for error growth and the growth of the solutions. In this paper we present a natural generalization ...
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2005-11-16BuchOn Maxwell's equations in exterior domains In this paper the long time asymptotic behavior of solutions of Maxwell's equations with electric conductivity in an exterior domain with mixed boundary conditions is investigated. It is shown that the solution behaves ...
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2005-10-21BuchOn Modifications of the Standard Embedding in Nonlinear Optimization This paper deals with pathfollowing methods in nonlinear optimization. We study the so- called "standard embedding" and show its limits. Then, we modify this embedding from several points of view and obtain modified standard ...
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2005-11-04BuchOn optimality conditions for some nonsmooth optimization problems over Lp spaces The paper deals with the minimization of an integral functional over an $L^{p}$ space subject to various types of constraints. For such optimization problems new necessary optimality conditions are derived, based on several ...
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2006-08-02BuchOn parameter estimation of stochastic delay differential equations with guaranteed accuracy by noisy observations Let (X(t), t ≥ −1) and (Y (t), t ≥ 0) be stochastic processes satisfying dX(t) = aX(t)dt + bX(t − 1)dt + dW(t) and dY (t) = X(t)dt + dV (t), respectively. Here (W(t), t ≥ 0) and (V (t), t ≥ 0) are independent standard ...
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2005-11-04BuchOn some questions related to the Krichever correspondence The article is devoted to some questions of Krichever correspondence for algebraic curves and surfaces. We construct new examples of subspaces of 2-dimensional local field from Krichever correspondence for algebraic surface, ...
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2005-11-15BuchOn Stochastic Integer Programming under Probabilistic Constraints We consider stochastic programming problems with probabilistic constraints involving integer-valued random variables. The concept of p-efficient points of a probability distribution is used to derive various equivalent ...
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2005-11-16BuchOn the average behaviour of greedy algorithms for the knapsack problem We study the average behaviour of the well-known greedy algorithms for the one-dimensional knapsack problem with Boolean variables when the number of variables n tends to infinity. It is supposed that the right-hand side ...
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2011-09-27BuchOn the construction of a class of Dulac-Cherkas functions for generalized Liénard systems
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2005-11-11BuchOn the criterion of asymptotical stability for index-1 tractable DAEs 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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2005-11-16BuchOn the EPI-Compactness of Equi-Lower Semi-Continuous Functions In this paper we show that equi-lsc. functions from a topological vector space X to the extended reals are epi-compact without assuming the local compactness or the second countablity of the underlying space X. We also ...
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2011-09-27BuchOn the existence of weak solutions to a coupled system of two turbulent flows
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2011-09-20BuchOn the geometry of polar varieties
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2011-09-20BuchOn the intrinsic complexity of point finding in real singular hypersurfaces In previous work we designed an efficient procedure that finds an algebraic sample point for each connected component of a smooth real complete intersection variety. This procedure exploits geometric properties of generic ...
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2005-10-20BuchOn the Jacobian Varieties of Picard curves In this paper a system of coordinates for the effective divisors on the Jacobian Variety of a Picard curve is presented. These coordinates possess a nice geometric interpretation and provide us with an unifying environment ...