Disputation Thore Manuel Bürgel

Thema der Dissertation: Machine learning for data-driven primary prevention at population scale Thema der Disputation: Data-driven health management and the era of value-based care

Ort: Seminarraum 031 (Fachbereich Mathematik und Informatik, Arnimallee 7, 14195 Berlin)

Eins@FU Lange Nacht der Wissenschaft

Disputation Stephan Schwartz

Thema der Dissertation: Optimal Graph Coverings with Connected Subgraphs Thema der Disputation: Mathematical Models for Districting Problems

Ort: Seminarraum 031 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Disputation Daniel Rosebrock

Thema der Dissertation: Dissecting regional heterogeneity and modeling transcriptional cascades in brain organoids Thema der Disputation: Markov chain Monte Carlo (MCMC) methods

Ort: Seminarraum 005 (Fachbereich Mathematik und Informatik, Takustr. 9, 14195 Berlin)

Kolloquiumsvortrag Dr. Anna Hilsmann

Kolloquiumsvortrag Dr. Anna Hilsmann (Fraunhofer Heinrich-Hertz-Institut): Learning to be human: Von volumetrischem Video zu realistischen Avataren

Ort: SR 006, Takustr. 9, 14195 Berlin

Vorlesungsfreie Zeit

Wir wünschen euch alle erholsame Semesterferien ;)

Disputation Talia Beatrice Kimber

Thema der Dissertation: Machine Learning for Kinase Drug Discovery Thema der Disputation: Virtual screening in computer-aided drug discovery: molecular encodings and deep learning models

Mathematische Forschung verstehen

Mit der Vortragsreihe „Mathematische Forschung verstehen“ möchten wir jedem die Möglichkeit geben, einen Zugang zu mathematischer Forschung zu erhalten.

Ort: FU Berlin, Institut für Mathematik, Arnimallee 3, HS 001

Max von Kleist (FU-Berlin Antrittsvorlesung): Mathematics for public health

Public health is concerned with measures that improve the general health and prevent infections. In my talk, I will give an overview and outlook of our current work and explain how data science in conjunction with mathematical modeling and simulation can be utilized to guide public health decisions. In particular, I will present approaches that utilize primary and secondary data of SARS-CoV-2 to permanently monitor and assess the pandemic. Moreover, I will give examples where these approaches supported the choice of containment and testing strategies in 2020/21. I will then give some insight into our ongoing work in the field of HIV-1 prevention, the mathematical methods developed along the way, and illustrate how this work is used to quantify risk reduction, to develop guidelines, as well as to a posteriori assess the impact of interventions on the HIV pandemic.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Habilitationsvortrag Dr. Patricio Farrell

Thema des Habilitationsvortrag: Quantum Computing

Ort: Fachbereich Mathematik und Informatik, Seminarraum 019, Arnimallee 3, 14195 Berlin

Habilitationsvortrag Prof. Dr. Marco Block-Berlitz

Thema des Habilitationsvortrag: Zeig mir nur einen Teil von Dir und ich werde Dich erkennen!

Ort: Fachbereich Mathematik und Informatik, Seminarraum 046, Takustr.9, 14195 Berlin

Disputation Peter Tillmann

Thema der Dissertation: Optimizing bifacial tandem solar cells for realistic operation conditions Thema der Disputation: Application of layer-wise relevance propagation for explainable neural networks in image recognition

Ort: Hörsaal des Zuse-Institutes Berlin (ZIB) (Takustr.7, 14195 Berlin)

Disputation Larissa Groth

Thema der Dissertation: A Vulnerability Management Solution for constrained IoT devices with a Trusted Execution Environment using a Hardware Root of Trust Thema der Disputation: Use and Misuse of the IoT - Recent Challenge

Marita Thomas (FU-Berlin Antrittsvorlesung): Modeling and Analysis of Bulk-Interface Processes

Heterogeneous materials can be seen as bulk-interface systems. They consist of distinct bulk components with different material properties meeting at thin interfacial layers forming lower-dimensional substructures of the system. In many applications the properties of interfaces strongly impact the functionality of the whole system and, in turn, interfaces are strongly affected by processes taking place in the bulk material. Interfaces thus follow their own evolution laws in interaction with bulk processes. In this talk I discuss a general thermodynamical modeling framework for bulk-interface processes and, in particular, apply it to problems related to heat conduction and fracture in elastic composites. Here, a challenge in the modeling and in the analysis lies in the change of the material geometry with the progressing fracture and in the constraint that in many materials crack growth is a unidirectional process, since the crack cannot heal. Models suited to handle these challenges and thus suited to describe dynamic fracture processes in elastic solids with the aid of non-smooth constraints will be introduced. Recent results on their mathematical analysis will be presented.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Kolloquiumsvortrag Dr. Franz Zieris

Kolloquiumsvortrag Dr. Franz Zieris: Agiler Öltanker oder Freeclimbing? Von der Anforderung zur Umsetzung in Kundenprojekten

Ort: Raum 046, Takustr. 9, 14195 Berlin

Kolloquiumsvortrag Dr. Franz Zieris

Kolloquiumsvortrag Dr. Franz Zieris: Agiler Öltanker oder Freeclimbing? Von der Anforderung zur Umsetzung in Kundenprojekten

Ort: Raum 046, Takustr. 9, 14195 Berlin

Disputation Jes Lasse Hinrichsen-Bischoff

Thema der Dissertation: Adaptive Discontinuous Galerkin Methods for Variational Inequalities with Applications to Phase Field Models Thema der Disputation: Virtual Element Methods

Ort: Seminarraum 108 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Mathematische Forschung verstehen

Mit der Vortragsreihe „Mathematische Forschung verstehen“ möchten wir jedem die Möglichkeit geben, einen Zugang zu mathematischer Forschung zu erhalten.

Ort: FU Berlin, Institut für Mathematik, Arnimallee 3, HS 001

Mentoring

Disputation Annkatrin Sarah Bressin

Thema der Dissertation: A Multi-Omics Analysis of Transcription Control by BRD4 Thema der Disputation: Testing statistical models on RNA-seq and NET-seq data

Akademische Ferien

Wir wünschen Euch eine schöne Weihnachtszeit und einen guten Rutsch ins neue Jahr!

Disputation Laura Cifuentes Fontanals

Thema der Dissertation: Methods for control strategy identification in Boolean networks Thema der Disputation: Computational algebra methods for Boolean networks

Ort: Seminarraum 108/109 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Claudia Schillings (FU-Berlin Antrittsvorlesung): Quantification of uncertainty for inverse and optimization problems

Approaches to decision making and learning mainly rely on optimization techniques to achieve “best” values for parameters and decision variables. In most practical settings, however, the optimization takes place in the presence of uncertainty about model correctness, data relevance, and numerous other factors that influence the resulting solutions. For complex processes modeled by nonlinear ordinary and partial differential equations, the incorporation of these uncertainties typically results in high or even infinite dimensional problems in terms of the uncertain parameters as well as the optimization variables. We will discuss methods which can be shown to be robust with respect to the number of parameters and are therefore suitable for this setting.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Mathematische Forschung verstehen

Mit der Vortragsreihe „Mathematische Forschung verstehen“ möchten wir jedem die Möglichkeit geben, einen Zugang zu mathematischer Forschung zu erhalten.

Ort: FU Berlin, Institut für Mathematik, Arnimallee 3, HS 001

Disputation Sebastian Fischer

Thema der Dissertation: Internet of Things: A Model for Cybersecurity Standards and the Categorisation of Devices Thema der Disputation: Cybersecurity for IoT - Standards, Regulations and Research

Ort: Raum 108/109 (FB Mathematik und Informatik, Arnimalle 6, 14195 Berlin)

EinS@FU-Winterfest

Ort: Holzlaube (vgl. Einladungsmail)

Mentoring

Disputation Simona Stanislavova Boyadzhiyska

Thema der Dissertation: Minimal Ramsey graphs, orthogonal Latin squares, and hyperplane coverings Thema der Disputation: The extremal number of surfaces

Ort: Seminarraum 032 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Milena Hering (Edingburgh): Embedding of Algebraic Varieties and Toric Vector bundles

Algebraic varieties are geometric objects that can be described as the zero locus of polynomial equations. While the relationship between geometry and algebra is fundamental to algebraic geometry, it still remains quite mysterious. I will explain some aspects that are known about it, as well as some open questions.  And how toric vector bundles enter the equation.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Mentoring

Arend Bayer (Edingburgh): Derived Categories, Wall-crossing and Birational Geometry

Birational geometry studies maps between algebraic varieties defined by rational functions. Recently, derived categories, stability conditions and wall-crossing have led to an entirely new approach to fundamental open questions in birational geometry. I will survey these developments, with an emphasis on Hyperkaehler varieties and cubic fourfolds.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Disputation Tom Dörffel

Thema der Dissertation: Moisture-Induced Dynamics of Tilted Tropical Cyclones Thema der Disputation: Tipping Points in the Climate System

Disputation Sahar Iravani

Thema der Dissertation: Interpretable Deep Learning Approaches for Biomarker Detection from High-Dimensional Biomedical Data Thema der Disputation: Self-Supervised Learning for Visual Representation

Ort: Seminarraum (Zuse Institut Berlin, Takustr. 7, 14195 Berlin)

Disputation Franziska Boenisch

Thema der Dissertation: Secure and Private Machine Learning Thema der Disputation: What Trust Model is Needed for Federated Learning to be Private?

Disputation Felix Paul Ambellan

Thema der Dissertation: Efficient Riemannian Statistical Shape Analysis with Applications in Disease Assessment Thema der Disputation: Principal Geodesic Analysis and the Riemannian Exponential in Lie Groups

Ort: Seminarraum (EG Rundbau) (ZIB, Takustr.7, 14195 Berlin)

Besuch eines Science Slams

Bei unserem nächsten Socialevent wollen wir uns die Forschung von drei verschiedenen Wissenschaftler*innen anhören. Davor oder danach geht es dann noch in eine Bar, wo wir in entspannter Atmosphäre über die Themen diskutieren können.

Ort: Zeiss-Großplanetarium Prenzlauer Allee 80 10405 Berlin

Ana Djurdjevac (FU-Berlin Antrittsvorlesung): Randomness and PDEs: Analysis, Numerics and Applications

We will first consider interacting particle systems that provide powerful models that are useful in many application areas such as sociology (agents), molecular dynamics (proteins) etc. The first model that we will define is a non-linear stochastic PDE that provides a faithful representation of the evolution of the empirical density of a given particle system. This model has a direct applications in the opinion dynamics that will be discussed. Furthermore, we will explain difficulties in numerical approximations of these problems. Instead of considering many particles, next we will consider just one Brownian particle, but which is now evolving on a random domain. Using the rough path analysis, we will investigate different scaling regimes of this system. As a natural question in this setting is how to present a Gaussian random fields on a sphere. One way to do this is using the so-called spherical harmonics. We will discuss the advantages of this approach and challenges in its generalizations to an arbitrary manifold.

Ort: Seminarraum 019 Arnimallee 3 14195 Berlin

Mathematische Forschung verstehen

Mit der Vortragsreihe „Mathematische Forschung verstehen“ möchten wir jedem die Möglichkeit geben, einen Zugang zu mathematischer Forschung zu erhalten.

Ort: FU Berlin, Institut für Mathematik, Arnimallee 3, HS 001

Disputation Moritz Hoffmann

Thema der Dissertation: Efficient algorithms for simulation and analysis of many-body systems Thema der Disputation: Discovering governing equations from time-series data

Disputation Roya Ebrahimi Viand

Thema der Dissertation: Molecular Dynamics Simulation of Open Systems far from Equilibrium Thema der Disputation: Solution to Archie's law puzzle in porous media

Ort: Seminarraum 032 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Disputation Abbas Gholami Poshtehani

Thema der Dissertation: Coupling boundary conditions in continuum-particle approach for open systems: theoretical analysis and computational implementation Thema der Disputation: Electrolyte flows and the governing mathematical models and numerical approach for the modelling

Ort: Seminarraum 031 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Disputation Mona Milena Rams

Thema der Dissertation: New approaches for unsupervised transcriptomic data analysis based on Dictionary learning Thema der Disputation: Trajectory inference from single-cell transcriptomic data with Slingshot

Ort: Seminarraum (Zuse Institut Berlin, Takustr. 7, 14195 Berlin)

Ersti-Fahrt

Stuzubi Messe Berlin

Das Mentoring-Team Geschichte Kultur geht gemeinsam mit EinS@FU-Studierenden zur Stuzubi Messe in Berlin.

Disputation Laith Rastanawi

Thema der Dissertation: On 4-Dimensional Point Groups and on Realization Spaces of Polytopes Thema der Disputation: Projectively unique polytopes

Ort: Seminarraum (Fachbereich Mathematik und Informatik, Arnimallee 2, 14195 Berlin)

Workshop: Bürokratie im Studium

Ort: Takustr. 9 SR005

Disputation Philip Daniel Kleinert

Thema der Dissertation: Computational interpretation of disease-causing, structural, and non-coding human genetic variants Thema der Disputation: Computational prediction of protein structures using a neural-network based model

Ort: Seminarraum 032 (FB Mathematik und Informatik, Arnimalle 6, 14195 Berlin)

Disputation Marie Hoffmann

Thema der Dissertation: What is in my Sample? - Challenges and Approaches for Unveiling the Hidden Diversity in Plankton Samples Thema der Disputation: Designing highly multiplex PCR primer sets with Simulated Annealing Design using Dimer Likelihood Estimation (SADDLE)

Ort: Seminarraum 006 (Fachbereich Mathematik und Informatik, Takusstr.9, 14195 Berlin)

Disputation Gottfried Hastermann

Thema der Dissertation: Analysis of the Cell-Vertex Finite Volume Method for Pseudo-Incompressible Divergence Constraints on Quadrilateral and Cuboid Meshes Thema der Disputation: Structure preserving integration of the Vlasov-Poisson equation

Disputation Cenk Gündoğan

Thema der Dissertation: Information-centric Networking for the Constrained Internet of Things Thema der Disputation: Inter-networking Resource-constrained Things

Disputation Sebastian Niehus

Thema der Dissertation: Multi-Sample Approaches and Applications for Structural VariantDetection Thema der Disputation: Analysis of the expanded 1000 Genomes Project cohort using svtools

Ort: Seminarraum 108/109 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Disputation Jonathan Kliem

Thema der Dissertation: Applications of Topology, Combinatorics and Algorithms to Discrete Geometry Thema der Disputation: Thieves and Necklaces

Disputation Lam-Ha Ly

Thema der Dissertation: Deciphering cellular heterogeneity by single-cell transcriptome analysis Thema der Disputation: Approaches for network reconstruction using transcriptome data

Ort: Ort: Seminarraum 049 (Fachbereich Mathematik und Informatik, Takustr.9, 14195 Berlin)

Disputation Jan-Hendrik Niemann

Thema der Dissertation: Learning Reduced Models for Large-Scale Agent-Based Systems Thema der Disputation: Decentralized and Distributed Optimization

Disputation Luzie Helfmann

Thema der Dissertation: Non-stationary Transition Path Theory with applications to tipping and agent-based models Thema der Disputation: Large Deviation Results for Dynamics of Many Agent

Ort: Ort: Seminarraum (Zuse Institut Berlin, Takustr. 7, 14195 Berlin)

Disputation Eldar Abdullaev

Thema der Dissertation: Dynamical Aspects of the Evolution of Segmental Duplications in the Human Genome Thema der Disputation: The Support Vector Machines (SVMs) and the kernel method

Habilitationsvortrag Dr. Thilo Muth

Habilitationsvortrag zum Thema: Computational techniques for identifying and classifying metabolites using untargeted mass spectrometry

Ort: gr. Hörsaal der Informatik (Takustr. 9, 14195 Berlin)

Disputation Elzbieta Lidia Gralinska

Thema der Dissertation: Association Plots visualize cluster-specific genes from high-dimensional transcriptomics data Thema der Disputation: Dimensionality reduction methods

Ort: Ort: Seminarraum 049 (Fachbereich Mathematik und Informatik, Takustr. 9, 14195 Berlin)

Disputation Jakub Maciej Bartoszewicz

Thema der Dissertation: Deep learning approaches for predicting pathogenic potentials of novel DNA and RNA sequences Thema der Disputation: Discovering regulatory motif syntax in eukaryotic genomes with convolutional neural networks

Disputation Niklas Björn Wulkow

Thema der Dissertation: Modelling Observations of Dynamical Systems with Memory Thema der Disputation: Robust numerical schemes for the approximation of the memory kernel in the Generalized Langevin Equation

Disputation Martyna Katarzyna Gajos

Thema der Dissertation: Analysis of the determinants of Pol II pausing Thema der Disputation: Interpretable machine learning approaches in genome regulation research

Disputation Joscha Podlesny

Thema der Dissertation: Multiscale Modeling and Simulation of Deformation Accumulation in Fault Networks Thema der Disputation: Generalization error estimates for physics-informed neural networks

Ort: Ort: Raum 108/109 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

Disputation Vyacheslav Boyko

Thema der Dissertation: Data-driven modeling of intermittent turbulence in the stably stratified atmospheric boundary layer Thema der Disputation: A method for circulation-based topological decomposition of fluid-dynamical data

Ort: Seminarraum 126 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin)

SoCG: Geometry Week und Symposium on Computational Geometry

Disputation Jan Fritz Ulbrich

Thema der Dissertation: Swarm-Based Trajectory Planning for Autonomous Cars Thema der Disputation: ETA Prediction with Graph Neural Networks in Google Maps

Ort: Raum 031 (Fachbereich Mathematik und Informatik, Arnimallee 7, 14195 Berlin)

Imre Bárány (Rényi Institute, Budapest): Cells in the box and a hyperplane

It is well known that a line can intersect at most 2 n −1 cells of the  n × n chessboard. What happens in higher dimensions: how many cells of the  d -dimensional [0, n ]^ d box can a hyperplane intersect? We answer this question asymptotically. We also prove the integer analogue of the following fact. If  K,L are convex bodies in  R ^d and  K ⊂ L , then the surface area  K is smaller than that of  L . This is joint work with Péter Frankl.

Ort: Chemistry building Arnimallee 22 14195 Berlin Hörsaal A

János Pach (Rényi Institute, Budapest): Facets of Simplicity

We discuss some notoriously hard combinatorial problems for large classes of graphs and hypergraphs arising in geometric, algebraic, and practical applications. These structures are of bounded complexity: they can be embedded in a bounded-dimensional space, or have small VC-dimension, or a short algebraic description. What are the advantages of low complexity? I will suggest a few possible answers to this question, and illustrate them with classical examples.

Ort: Chemistry building Arnimallee 22 14195 Berlin Hörsaal A

Disputation Daniel Kirchner

Thema der Dissertation: Computer-Verified Foundations of Metaphysics and an Ontology of Natural Numbers in Isabelle/HOL Thema der Disputation: What a Round Square and Flying Pigs can tell us about Abstraction and the Nature of Mathematical Objects

Disputation Thomas Krannich

Thema der Dissertation: Contributions to the detection of non-reference sequences in population-scale NGS data Thema der Disputation: Population-scale genotyping of genomic variants using GraphTyper

Ort: Hörsaal B (0.1.01) (FB Physik, Arnimallee 14, 14195 Berlin)

Disputation Victor Mireles Chávez

Thema der Dissertation: Finding Reusable Modules Using Sparse Matrix Decompositions Thema der Disputation: Advances in text-based reconstruction of biological networks

Disputation Ray Chew

Thema der Dissertation: Balanced Local Data Assimilation with a Blended Numerical Model for Geophysical Flows Thema der Disputation: Combining data assimilation and machine learning to emulate a dynamical model

Ort: Seminarraum 108/109 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin) ***Die Teilnahme ist nur unter der Einhaltung der aktuellen 3G Regelungen möglich.***

Disputation Mattes Mollenhauer

Thema der Dissertation: On the statistical approximation of conditional expectation operators Thema der Disputation: Perturbation theory of linear operators in machine learning and statistics

Disputation Sophia Sage Elia

Thema der Dissertation: On Three Ehrhart Theories & Simplicial Hyperplane Arrangements Thema der Disputation: The Classification of Finite Reflection Groups

Disputation Lennard Epping

Thema der Dissertation: K-mer-based High-throughput Analysis of the Adaptive Potential of Campylobacter Thema der Disputation: Development of Genome-wide Association Studies for microbial genomic research

Disputation Benjamin Panreck

Thema der Dissertation: Entwicklung einer heuristischen Verhaltensregelung für die Visuomotorik humanoider Roboter Thema der Disputation: Printed Electronics - Druck von elektronischen Schaltungen mit continuous-feature Technologien

Disputation Thomas Risch

Thema der Dissertation: Computational analysis of cancer transcriptomes: drug response prediction in colorectal cancer and gene regulatory networks and long non-coding genes in medulloblastoma Thema der Disputation: Feature selection in computational analysis of cancer transcriptomes

Disputation Alexander Bajic

Thema der Dissertation: Simulation-based Evaluation of Dynamic Attack and Defense in Computer Networks Thema der Disputation: Spieltheoretische Ansätze zur Entwicklung von Strategien für die Verwendung proaktiver Sicherheitsmechanismen

Disputation Sandra Döpking

Thema der Dissertation: Error aware analysis of multi-scale reactivity models for chemical surface reactions An Adaptive and a Multilevel Adaptive Sparse Grid approach to address global uncertainty and sensitivity Thema der Disputation: Scrum and Kanban approaches for process optimisation

Kolloquiumsvortrag Prof. Dr. Florin Manea

Kolloquiumsvortrag Prof. Dr. Florin Manea (Göttingen)

Ort: online via Zoom

Habilitationsvortrag Prof. Dr. Daniel Göhring

Thema des Habilitationsvortrag: Information Theory, Error Correcting Codes for Classic and for Quantum Computing

Ort: gr. Hörsaal der Informatik (Takustr. 9, 14195 Berlin) – unter Einhaltung der 2G-Regelung- UND

Disputation Hanxing Lin

Thema der Dissertation: Parqueting-Reflection Principle and Boundary Value Problems in Some Circular Polygons Thema der Disputation: Residual Cauchy-Type Formula on Riemann Surfaces

Disputation Andreas Philipp

Thema der Dissertation: Perception and Prediction of Urban Traffic Scenarios for Autonomous Driving Thema der Disputation: Partial Observable Markov Decision Process (POMDP)

Disputation Nadja Seiferth

Thema der Dissertation: Algorithmic Aspects of Packing Problems Thema der Disputation: The Complexity Class Ǝℝ and Computational Geometry

Disputation Georg Lehner

Thema der Dissertation: The passage from the integral to the rational group ring in algebraic K-theory Thema der Disputation: Modular Representation Theory and Berman's Theorem

Disputation Giordana Tornow

Thema der Dissertation: Quasi One-Dimensional Modelling of Turbulence and Interaction of Combustion Chambers in a Shockless Explosion Combustor Thema der Disputation: Mathemagic - The Banach-Tarski Paradox and its Astonishing Corollaries

Ort: Raum 108 (Fachbereich Mathematik und Informatik, Arnimallee 6, 14195 Berlin) +++Die Veranstaltung unterliegt der Einhaltung der 3G Reglung+++

Disputation Guang Peng

Thema der Dissertation: Evolutionary Multi-Objective Optimization for Computation Offloading in Collaborative Edge-Cloud Computing Thema der Disputation: Single and Multi-Objective Optimization

Disputation Pay Gießelmann

Thema der Dissertation: Genome Analysis Methods using Long Read Nanopore Sequencing Thema der Disputation: Nanopore Signal Analysis using Hidden-Markov Model

Disputation Patrick Wyndham Morris

Thema der Dissertation: Clique Factors: Extremal and Probabilistic Perspectives Thema der Disputation: Rainbow matchings and the probabilistic method

Disputation Katharina Alexandra Klost

Thema der Dissertation: Geometric Graphs: Reachability, Long Trees and Short Cycles Thema der Disputation: Shortest Paths in Unit Disk Graphs

Ort: gr. Hörsaal* (Takustr.9, 14195 Berlin) * Begrenzte Teilnehmerzahl unter Kontrolle der 3G Regeln – geimpft, genesen, getestet und

Disputation Michael Witt

Thema der Dissertation: Generation of Secure Runtime Environments for Untrusted Applications Through Machine Code Analysis Thema der Disputation: Möglichkeiten und Limitierungen der Überwachung von Systemaufrufen in verschiedenen Betriebssystemen und Prozessorarchitekturen.

Ort: Seminarraum 051* - Takustr.9, 14195 Berlin (* Begrenzte Teilnehmerzahl unter Kontrolle der 3G Regeln – geimpft, genesen, getestet) und

Disputation Babette de Wolff

Thema der Dissertation: Delayed feedback stabilization with and without symmetry Thema der Disputation: Kermack-McKendrick formulation of epidemic models

Anna-Laura Sattelberger (Leipzig): Algebraic and Topological Data Analysis

16:30-16:50 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 17:00-17:40 Uhr Fachvortrag: Algebraic and Topological Data Analysis Algebraic analysis investigates linear differential equations with polynomial coefficients by encoding them as ideals in the Weyl algebra D . In this talk, I present several applications of this theory in the sciences. Among others, I present how maximum likelihood estimation - a technique from statistics for the inference of data - can be tackled in terms of D -modules. The second part of my talk is about the development of algebraic tools for topological data analysis. This area of research extracts intrinsic information of data with methods from (algebraic) topology. The main tool is persistent homology. While the one-parameter case is fully described by so-called "barcodes" associated to the data, one encounters a lack of a corresponding invariant in the multivariate case. I give insights into an ongoing project with Wojciech Chachólski and René Corbet, in which we construct stable invariants for multipersistence modules.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=me8550a880d3f0007933e9fd90ac1e89b Meeting-Kennnummer (Zugriffscode): 188 230 6744 Meeting Passwort: Villa

Alessio D’Alì (Osnabrück): Constructing Koszul Gorenstein algebras from Cohen-Macaulay simplicial complexes

14:15-14:35 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 14:45-15:25 Uhr Fachvortrag: Constructing Koszul Gorenstein algebras from Cohen-Macaulay simplicial complexes My main area of interest is combinatorial commutative algebra, a topic that sits at the crossroads between algebra, combinatorics and topology. The main aim of this talk is to discuss a joint project with Lorenzo Venturello (KTH Stockholm) relating Koszul Gorenstein algebras and Cohen-Macaulay simplicial complexes. Koszul algebras are quadratic algebras satisfying desirable homological properties and arising naturally in many geometric and combinatorial contexts: for instance, the coordinate rings of Veronese, Segre and Grassmannian varieties (in their natural embeddings) are all Koszul, and so is the Stanley-Reisner ring of any flag simplicial complex. However, the Koszul property is hard to control and to check in general, and many conjectures about the general behaviour of Koszul algebras are currently open. Starting from a flag pure simplicial complex Δ, we propose a construction of a (non-monomial) Gorenstein ring R_Δ which is Koszul if and only if Δ is Cohen-Macaulay, thus providing a bridge between these two worlds. On a more combinatorial level, the very same correspondence also yields that R_Δ has a Gröbner basis of quadrics if and only if Δ is shellable. As an application, we provide counterexamples to an algebraic generalization of a conjecture by Charney and Davis about flag homology spheres.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=m5497d01eaea770dee34bfc7e2751dddb Meeting-Kennnummer (Zugriffscode): 188 591 7254 Meeting Passwort: Villa

Marvin Anas Hahn (Leipzig): Die tropische Geometrie von monotonen Hurwitz-Zahlen

12:00-12:20 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 12:30-13:10 Uhr Fachvortrag: Die tropische Geometrie von monotonen Hurwitz Zahlen Hurwitz-Zahlen sind wichtige enumerative Invarianten in der algebraischen Geometrie. Sie zählen verzweigte Abbildungen zwischen Riemannschen Flächen. Äquivalent enumerieren sie Faktorisierungen in der symmetrischen Gruppe. Hurwitz-Zahlen wurden in den 1890er Jahren von Adolf Hurwitz eingeführt und wurden in den 1990er Jahren durch enge Verbindungen zur sogenannten Gromov-Witten-Theorie zu zentralen Objekten der enumerativen algebraischen Geometrie. Dieses Zusammenspiel zwischen Hurwitz und Gromov–Witten-Theorie ist ein aktives Forschungsfeld und brachte u.a. die gefeierte  ELSV–Formel  hervor. Im letzten Jahrzehnt sind viele Varianten von Hurwitz-Zahlen eingeführt und untersucht worden. Insbesondere die Frage nach Verbindungen zwischen diesen Varianten von Hurwitz Zahlen und Gromov–Witten-Theorie ist von großem Interesse. Sogenannte  monotone Hurwitz-Zahlen , die der Theorie der Zufallsmatrizen entstammen, gehören zu den meistuntersuchten Varianten von Hurwitz-Zahlen. Dieser Vortrag ist ein Fortschrittsbericht unseres größeren Programms, in welchem wir die Verbindungen zwischen monotonen Hurwitz-Zahlen und Gromov-Witten-Theorie durch kombinatorische Methoden der tropischen Geometrie untersuchen und dessen langfristiges Ziel ein Beweis der noch offenen Vermutung einer ELSV – Typ Formel für doppelte monotone Hurwitz-Zahlen ist. Der Vortrag basiert zum Teil auf gemeinsamen Arbeiten mit Reinier Kramer und Danilo Lewanski.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=m315d6e41aa6c6bf480ab721b7c39ffb2 Meeting-Kennnummer (Zugriffscode): 188 485 7830 Meeting Passwort: Villa

Disputation Damian Pascal Paul Klimke

Thema der Dissertation: Das Konzept des Dialogischen Lernens im Mathematikunterricht - Vorbehalte und Chancen aus der Sicht angehender Mathematiklehrkräfte Thema der Disputation: Modellieren im Mathematikunterricht

Ort: Raum 019* (Arnimallee 3, 14195 Berlin) (* Begrenzte Teilnehmerzahl unter Kontrolle der 3G Regeln – geimpft, genesen, getestet) und

Disputation Stefan Seegerer

Thema der Dissertation: Informatik für alle - Beitrag und exemplarische Ausgestaltung informatischer Bildung als Grundlage für Bildung in der digitalen Transformation Thema der Disputation: Künstliche Intelligenz als Thema und Aufgabengebiet informatischer Bildung

Giulia Codenotti (Frankfurt): The flatness constant and its relatives

16:30-16:50 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 17:00-17:40 Uhr Fachvortrag: The flatness constant and its relatives The lattice width of a convex body is a parameter measuring how thin the body is in lattice directions. In each fixed dimension, the flatness constant is the supremum of the widths of a special class of convex bodies, those which are hollow. In this talk we will explore certain generalizations and restrictions of the flatness constant obtained by changing the class of convex bodies whose width we study: hollow lattice polytopes, for example, or those convex bodies which do not contain a certain polytope. We will see how these modified flatness constants have connections and motivations in different fields, like integer linear programming, lattice polytopes, and symplectic geometry.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=m76775164d53f79a640ff25283a4e97d8 Meeting-Kennnummer (Zugriffscode): 188 706 6091 Meeting Passwort: Villa

Jorge Olarte (TU Berlin): Valuated matroids and regions of the tropical Grassmannian

14:15-14:35 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 14:45-15:25 Uhr Fachvortrag: Valuated matroids and regions of the tropical Grassmannian A valuated matroid is essentially a matroid polytope regularly subdivided into matroid polytopes. In tropical geometry, valuated matroids take the role of linear spaces, hence their importance. The tropical Grassmannian is the space of valuated matroids which are realizable, that is, they arise as tropicalizations of a classical linear space. Certain regions in the tropical Grassmannian have deep connections to certain types of matroid, such as positroids and transversal matroids. In this talk we will discuss three regions of interest: the positive part, the image of the tropical Stiefel map and the tropical symplectic Grassmannian.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=m1ce0f308fc47db6efd6567ee88a715ca Meeting-Kennnummer (Zugriffscode): 188 591 5127 Meeting Passwort: Villa

Marta Panizzut (TU Berlin): Polytopes meet polynomials: realization spaces and tropical varieties

12:00-12:20 Uhr Lehrprobe zum Thema The Theorem of Carathéodory  (auf Englisch) ca. 12:30-13:10 Uhr Fachvortrag: Polytopes meet polynomials: realization spaces and tropical varieties Many exciting research topics lie at the interface between discrete, tropical, and algebraic geometry. In this talk I will present examples of such topics based on some of my research projects. The first part introduces the study of algebraic degrees of realizations of polytopes satisfying some geometric constraints. The second one focuses on the analysis through the lens of tropical geometry of models of cubic surfaces, matroid polytopes, and their subdivisions. Throughout the talk, I will highlight how discrete and algebraic methods fruitfully interact and provide new insights and computational tools.

Ort: Die Veranstaltung wird virtuell via Webex-Meetings stattfinden. https://fu-berlin.webex.com/fu-berlin/j.php?MTID=me9ce01b68aa839f549f35db21c67be58, Meeting-Kennnummer (Zugriffscode): 188 466 2732. Meeting Passwort: Villa

Disputation Katinka Becker

Thema der Dissertation: Logical Analysis of Biological Data Thema der Disputation: Characterizing Clear Cell Renal Cell Carcinoma using Logical Analysis of Data

Disputation Marc André Osterland

Thema der Dissertation: Data-driven Disease Assessment from time-resolved Fluorescence Optical Imaging Thema der Disputation: Generative Adversarial Networks

Disputation Roman Schulte-Sasse

Thema der Dissertation: Integration of Multi-Omics Data with Graph Convolutional Networks to Identify Cancer-Associated Genes Thema der Disputation: Deep Learning on Graphs