E-Dissertationen: Suche
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The Formation of the Concertina Pattern: Experiments, Analysis, and Numerical Simulations
(2011-09-12)
The concertina is a magnetization pattern observed in elongated thin-film elements of a soft-magnetic material during the switching-process by an external magnetic field. The almost periodic pattern consists of stripe-like ...
Unbounded Bivariant K-theory and an Approach to Noncommutative Fréchet Spaces
(2011-09-19)
In the current work we thread the problems of smoothness in non-commutative $C^*$-algebras arising form the Baaj-Julg picture of the $KK$-theory. We introduce the notion of smoothness based on the pre-$C^*$-subalgebras of ...
Alternative Finestructural and Computational Approaches to Constructibility
(2011-07-14)
We consider attempts to simplify finestructural arguments concerning inner models of ZFC, in particular L; in addition, we exhibit different aspects of the computational strength of Infinite Time Register Machines....
Die Arbeit befasst sich mit alternativen Methoden zur Analyse von Gödels konstruktiblem Universum L, dem ⊆-minimalen klassenmächtigen Modell von ZFC und anderer konstruktibler Strukturen.
Im ersten Teil werden ......
Die Arbeit befasst sich mit alternativen Methoden zur Analyse von Gödels konstruktiblem Universum L, dem ⊆-minimalen klassenmächtigen Modell von ZFC und anderer konstruktibler Strukturen.
Im ersten Teil werden ......
Mirror symmetry and stability conditions on K3 surfaces
(2011-07-20)
This thesis is concerned with questions arising in the realm of mirror symmetry for K3 surfaces. It is divided into two parts.
In the first part, we study the bijection between Fourier–Mukai partners of a K3 surface ...
In the first part, we study the bijection between Fourier–Mukai partners of a K3 surface ...
Homology Computations for Mapping Class Groups, in particular for Γ03,1
(2011-09-12)
In this thesis we compute the homology of mapping class groups of orientable and non-orientable surfaces. The surfaces we consider are of genus g, have one boundary curve and m permutable punctures. The ...
Sparse Grid Methods for Higher Dimensional Approximation
(2010-09-10)
Diese Arbeit befasst sich mit Dünngitterverfahren zur Lösung von höherdimensionalen Problemen. Sie zeigt drei neue Aspekte von Dünnen Gittern auf: Erweiterungen der elementaren Werkzeuge zur Arbeit mit Dünnen Gittern, eine ...
Joint methods in imaging based on diffuse image representations
(2010-08-31)
This thesis deals with the application and the analysis of different variants of the Mumford-Shah model in the context of image processing. In this kind of models, a given function is approximated in a piecewise smooth or ...
Numerische Simulation der Interaktion von inkompressiblen Zweiphasenströmungen mit Starrkörpern in drei Raumdimensionen
(2010-09-30)
In dieser Arbeit stellen wir erstmalig einen parallelen Löser für inkompressible Zweiphasenströmungen mit Oberflächenspannung in drei Raumdimensionen vor, der Masseerhaltung und hohe Konvergenzordnung vereint. Als zweite ...
Variational Methods in Shape Space
(2010-07-07)
This dissertation deals with the application of variational methods in spaces of geometric shapes. In particular, the treated topics include shape averaging, principal component analysis in shape space, computation of ...
Processing Elastic Surfaces and Related Gradient Flows
(2010-07-22)
Surface processing tools and techniques have a long history in the fields of computer graphics, computer aided geometric design and engineering. In this thesis we consider variational methods and geometric evolution problems ...