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On the Finiteness of the Classifying Space for Virtually Cyclic Subgroups
von Puttkamer, Timm Wilhelm (2018-07-20)This thesis mainly deals with finiteness properties of the classifying space for the family of virtually cyclic subgroups. We establish a link between the finiteness of the classifying space and the conjugacy growth invariant ... -
On the Formation and Economic Implications of Subjective Beliefs and Individual Preferences
Enke, Benjamin (2016-08-29)The conceptual framework of neoclassical economics posits that individual decision-making processes can be represented as maximization of some objective function. In this framework, people's goals and desires are expressed ... -
On the generation and modulation of electron spin density in open-shell phosphorus compounds
Brehm, Philipp (2024-08-23)This Ph.D. thesis consists of a systematic study on the accessibility of open shell phosphorus compounds having a P–O bond. For this two concepts for the stabilisation of such radicals were probed. Firstly, metal complexes ... -
On the geometry of nodal sets and nodal domains
Georgiev, Bogdan (2018-12-13)In the present work, we study and prove results related to the nodal geometry of Laplacian eigenfunctions on closed Riemannian manifolds, as well as solutions to more general classes of elliptic partial differential ... -
On the Hilbert uniformization of moduli spaces of flat G-bundles over Riemann surfaces
Stein, Luba (2014-01-27)In this thesis, we study the moduli spaces M_(g,q)^m (G)of flat pointed principal G-bundles over Riemann surfaces X. The genus of X is g 0 and G is a fixed Lie group. Further, we are given m 0 permutable marked points in ... -
On the imidazole-2-thione-based route to tricyclic 1,4-diphosphinines: synthesis, structures and reactions
Koner, Abhishek (2018-02-15)The PhD Thesis “<em>On the imidazole-2-thione-based route to tricyclic 1,4-diphosphinines: synthesis, structures and reactions</em>” describes the synthetic concept to and first studies on the chemistry of novel tricyclic ... -
On the Implications of Unobserved Technology and Preference Shifts for Aggregate Labor Demand and Supply
Balleer, Almut (2009-08-14)The macroeconomic approach to the labor market aims at explaining aggregate labor market phenomena that have been present in many industrialized countries such as the United States or the western European countries in the ... -
On the importance of meteorological parameters in processes affecting the chemical composition of the tropsphere
Emmerichs, Tamara (2022-12-22)Investigating the interaction of meteorology and chemistry in the troposphere is important for the identification of the processes which drive the evolution of tropospheric composition in a changing climate. It does not ... -
On the Influence of Cations in Non-Aqueous Electrochemistry
Reinsberg, Philip Heinrich (2019-07-29)In this thesis, different aspects of the electrochemistry in non-aqueous electrolytes are presented. Electrochemistry in non-aqueous electrolytes plays a key role in the transition from conventional to renewable energy ... -
On the Localisation and Reconstruction of Structural Model Errors in Dynamic Systems
Kahl, Dominik Thilo (2021-09-02)Pursuing a deeper understanding of the behaviour of dynamic systems is a main task of modern sciences, from accurate weather forecasts to precise drug delivery, from electrical engineering to cell biology and the very ... -
On the membrane model and the discrete Bilaplacian
Schweiger, Florian Martin (2021-04-26)This thesis is concerned with the membrane model, an example of a discrete random interface model. This model arises, for example, when studying thermal fluctuations in biomembranes. Mathematically, it is given as a Gibbs ... -
On the notion of order in the stable module category
Langer, Martin (2009-12-22)The notion of order in triangulated categories, as introduced by Schwede, is investigated in the case of the stable category of <i>kG</i>-modules, where <i>k</i> is a field of characteristic <i>p</i> and <i>G</i> is a ... -
On the numerical approximation of the Karhunen-Loève expansion for lognormal random fields
Michael Griebel; Guanglian Li (2019-07)The Karhunen-Loève (KL) expansion is a popular method for approximating random fields by transforming an infinite-dimensional stochastic domain into a finite-dimensional parameter space. Its numerical approximation is of ... -
On the numerical approximation of the Karhunen-Loève expansion for random fields with random discrete data
Griebel, Michael; Li, Guanglian; Rieger, Christian (2021-12)Many physical and mathematical models involve random fields in their input data. Examples are ordinary differential equations, partial differential equations and integro–differential equations with uncertainties in the ... -
On the Numerical Computation of Modular Forms
Berghaus, David (2023-12-12)This thesis presents a fast method for the numerical computation of modular forms. Our method significantly improves the performance of previous methods by using mixed-precision iterative solving techniques to reduce the ... -
On the optimal size of a joint savings association
Stark, Oded; Budzinski, Wiktor; Jakubek, Marcin; Kosiorowski, Grzegorz (2022-05)We develop a formula for the optimal size of a joint savings association between individuals who share the same financial goal and who can save towards that goal at the same rate. Our motivating example and the core of our ... -
On the origin and nature of brown dwarfs and massive planets
Thies, Ingo (2011-03-02)In this thesis the apparent peculiarities of brown dwarfs (BDs) are pointed out which force us to treat them as a population apart from, but yet still related to the stellar population. In particular, the properties that ... -
On the precarious link between the Gini coefficient and the incentive to migrate
Stark, Oded; Byra, Lukasz; Kosiorowski, Grzegorz (2020-02)We offer an explanation for the inconclusive results of empirical studies into the relationship between the magnitude of the Gini coefficient of income distribution at origin and the intensity of migration. Bearing in mind ... -
On the probabilistic evaluation of decadal and paleoclimate model predictions
Stolzenberger, Sophie (2017-11-27)The development of climate prediction systems for years to decades is an area of current research, as these time scales are important e.g. for the planning horizon of decision-makers. Those prediction systems can be improved ... -
On the Psychology of Birth
Hoffmann, Lisa (2020-11-17)In this dissertation thesis, I propose the theoretical construct of a birth-related mindset and direct and indirect measures for its assessment. I assume that childbirth can be mentally presented as a rather natural (natural ...