Fakultät 2 Mathematik und Naturwissenschaften
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1587 Submissions in this community.

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Backward stochastic differential equations with jumps are stable

Saplaouras, Alexandros (2017)

A backward stochastic differential equation is a stochastic differential equation whose terminal value is known, in contrast to a (forward) stochastic differential equation whose initial value is k...

Charge transfer in catalysis studied by in-situ microwave cavity perturbation techniques

Heenemann, Maria (2017)

The efficient use of our natural resources and the reduction of CO2 emissions are key aspects for future industrial processes. Important challenges are to convert hydrocarbons and to activate CO2 i...

Numerical and statistical aspects of tensor decompositions

Breiding, Paul (2017)

In this work we study numerical and statistical properties of tensor decompositions, namely the canonical-polyadic decomposition— commonly known as tensor-rank decomposition—and the computation of ...

Design, Epitaxie und Charakterisierung AlGaN-basierter Leuchtdioden mit Emissionswellenlängen unterhalb von 250 nm

Mehnke, Frank (2017)

Diese Arbeit befasst sich mit der Realisierung von AlGaN-basierten ultravioletten Leuchtdioden (LEDs) mit Emissionswellenlängen unterhalb von 250 nm sowie der Analyse ihrer strukturellen und elektr...

Activation of boron–boron, tin–silicon, and tin–tin bonds

Pareek, Manish (2017)

Die vorliegende Arbeit fokussiert sich auf die Aktivierung von Interelementbindungen der Elemente Bor, Silicium und Zinn. Der erste Teil dieser Arbeit beschreibt die Aktivierung von Diborbindungen ...

Theoretische Untersuchung der spektroskopischen Eigenschaften biologischer und synthetischer molekularer Spincluster

Ghassemi Tabrizi, Shadan (2017)

Molekulare Spincluster aus zwei bis acht austauschgekoppelten Übergangsmetallzentren erfüllen in Metalloproteinen vielfältige Funktionen, vor allem beim Elektronentransfer und in der biochemischen ...

Colloidal CdSe nanoparticles

Scott, Riccardo (2017)

Photonics might prevent the end of Moore's law and maintain the ever-accelerating progress of technology, beneficial for society and living standards in the world. Semiconductor nanoparticles are a...

Discrete conformal maps: boundary value problems, circle domains, Fuchsian and Schottky uniformization

Bobenko, Alexander I.; Sechelmann, Stefan; Springborn, Boris (2016)

We discuss several extensions and applications of the theory of discretely conformally equivalent triangle meshes (two meshes are considered conformally equivalent if corresponding edge lengths are...

Constructing solutions to the Björling problem for isothermic surfaces by structure preserving discretization

Bücking, Ulrike; Matthes, Daniel (2016)

In this article, we study an analog of the Björling problem for isothermic surfaces (that are a generalization of minimal surfaces): given a regular curve γ in R3 and a unit normal vector field n a...

On the Lagrangian structure of integrable hierarchies

Suris, Yuri B.; Vermeeren, Mats (2016)

We develop the concept of pluri-Lagrangian structures for integrable hierarchies. This is a continuous counterpart of the pluri-Lagrangian (or Lagrangian multiform) theory of integrable lattice sys...

Active Brownian motion of emulsion droplets: coarsening dynamics at the interface and rotational diffusion

Schmitt, Max; Stark, Holger (2016)

A micron-sized droplet of bromine water immersed in a surfactant-laden oil phase can swim (S. Thutupalli, R. Seemann, S. Herminghaus, New J. Phys. 13073021 (2011). The bromine reacts with the surfa...

Complex line bundles over simplicial complexes and their applications

Knöppel, Felix; Pinkall, Ulrich (2016)

Discrete vector bundles are important in Physics and recently found remarkable applications in Computer Graphics. This article approaches discrete bundles from the viewpoint of Discrete Differentia...

On the variational interpretation of the discrete KP equation

Boll, Raphael; Petrera, Matteo; Suris, Yuri B. (2016)

We study the variational structure of the discrete Kadomtsev-Petviashvili (dKP) equation by means of its pluri-Lagrangian formulation. We consider the dKP equation and its variational formulation o...

Shear banding in nematogenic fluids with oscillating orientational dynamics

Lugo-Frias, Rodrigo; Reinken, Henning; Klapp, Sabine H. L. (2016)

We investigate the occurrence of shear banding in nematogenic fluids under planar Couette flow, based on mesoscopic dynamical equations for the orientational order parameter and the shear stress. W...

Active Brownian particles moving in a random Lorentz gas

Zeitz, Maria; Wolff, Katrin; Stark, Holger (2017)

Biological microswimmers often inhabit a porous or crowded environment such as soil. In order to understand how such a complex environment influences their spreading, we numerically study non-inter...

Discrete complex analysis on planar Quad-graphs

Bobenko, Alexander I.; Günther, Felix (2016)

We develop further a linear theory of discrete complex analysis on general quad-graphs, extending previous work of Duffin, Mercat, Kenyon, Chelkak and Smirnov on discrete complex analysis on rhombi...

DGD gallery: storage, sharing, and publication of digital research data

Joswig, Michael; Mehner, Milan; Sechelmann, Stefan; Techter, Jan; Bobenko, Alexander I. (2016)

We describe a project, called the DGD Gallery, whose goal is to store geometric data and to make it publicly available. The DGD Gallery offers an online web service for the storage, sharing, and pu...

S-conical CMC surfaces. Towards a unified zheory of discrete surfaces with constant mean curvature

Bobenko, Alexander I.; Hoffmann, Tim (2016)

We introduce a novel class of s-conical nets and, in particular, study s-conical nets with constant mean curvature. Moreover we give a unified description of nets of various types: circular, conica...

Exponential decay ofcovariances for the supercritical membrane model

Bolthausen, Erwin; Cipriani, Alessandra; Kurt, Noemi (2017)

We consider the membrane model, that is the centered Gaussian field on Zdwhose covariance matrix is given by the inverse of the discrete Bilaplacian. We impose aδ-pinning condition, giving a reward...

Shadow price of information in discrete time stochastic optimization

Pennanen, Teemu; Perkkiö, Ari-Pekka (2017)

The shadow price of information has played a central role in stochastic optimization ever since its introduction by Rockafellar and Wets in the mid-seventies. This article studies the concept in an...