Welcome to the common homepage of the research groups of Barbara Baumeister, Kai-Uwe Bux and Christopher Voll. Here you can find information about the members of our group as well as joint activites, conferences and workshops we organise and courses that we offer.
We are supported by and members of:
| Name | Research interests | Homepage | ||
|---|---|---|---|---|
| Working group Baumeister | ||||
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PD Dr. habil. Barbara Baumeister | Finite group theory, permutation groups. Reflection groups, Coxeter groups and generalisations. Artin groups. | More | |
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Dr. Georges Neaime | Coxeter Groups, Artin Groups, Garside structures, Complex Reflection Groups, Complex Braid Groups, Hecke Algebras. | More | |
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Marcel Palmer | Coxeter and Artin groups. | More | |
| Working group Bux | ||||
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Prof. Dr. Kai-Uwe Bux | Geometric group theory, finiteness properties of groups, arithmetic groups, Thompson's groups. | More | |
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Dr. Ilaria Castellano | Totally disconnected locally compact groups, geometric group theory, finiteness properties of groups, asymptotic group theory and entropy theory. | More | |
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Dr. Elisa Hartmann | Geometric group theory and metric geometry. | More | |
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Dr. José Pedro Quintanilha | Low dimensional topology and geometric group theory. | More | |
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Jonas Flechsig | Geometric group theory, orbifold braid groups, arc matching complexes. | More | |
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Paul Hannes Schneider | Geometric group theory, finiteness properties of groups, graph theory. | More | |
| Working group Kühne | ||||
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Prof. Dr. Lukas Kühne | Combinatorial Algebra, geometric combinatorics, computer algebra. | More | |
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Sebastian Degen | Matroids, q-Matroids, coding theory. | More | |
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Leonie Mühlherr | Combinatorial Algebra, Hyperplane Arrangements, Graph Theory. | More | |
| Working group Voll | ||||
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Prof. Dr. Christopher Voll | Asymptotic group theory, algebraic combinatorics, enumerative problems. | More | |
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Dr. Ilaria Castellano | Totally disconnected locally compact groups, geometric group theory, finiteness properties of groups, asymptotic group theory and entropy theory. | More | |
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Dr. Karthika Rajeev | Asymptotic group theory, geometric group theory. | More | |
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Lars Bügemannskemper | Automorphisms of finite $p$-groups, pro-isomorphic zeta functions of group. | More | |
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Bianca Marchionna | Totally disconnected locally compact groups, asymptotic group theory, geometric group theory. | More | |
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Elena Tielker | Ehrhart theory, permutation statistics. | More | |
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Marlies Vantomme | Zeta functions. | More | |
| Title | Lecturer | Link |
|---|---|---|
| Summer semester 2025 | ||
| Title | Lecturer | Link |
|---|---|---|
| Winter Semester 2024/2025 | ||
| Summer semester 2024 | ||
| Winter Semester 2023/2024 | ||
| Gruppentheorie | Barbara Baumeister | More |
| Lattices | Kai-Uwe Bux | More |
| Lineare Algebra II | Lukas Kühne | More |
| Summer semester 2023 | ||
| Elementare Zahlentheorie | Barbara Baumeister | More |
| Lie Algebras and Lie Groups | Christopher Voll | More |
| Linear Algebra I | Lukas Kühne | More |
| Winter semester 2022/2023 | ||
| Algebraische Zahlentheorie | Christopher Voll | More |
| Lineare Algebra II | Barbara Baumeister | More |
| Proseminar zur Graphentheorie | Lukas Kühne | More |
| Seminar Algebra | Christopher Voll | More |
| Summer semester 2022 | ||
| Algebra II | Christopher Voll | More |
| Lineare Algebra I | Barbara Baumeister | More |
| Proseminar Abzählende Kombinatorik | Christopher Voll | More |
| Proseminar Matroide | Lukas Kühne | More |
| Winter semester 2021/2022 | ||
| Masterseminar Algebra | Christopher Voll | More |
| Masterseminar Kryptographie | Barbara Baumeister | More |
| Mathematik für Naturwissenschaften I | Christopher Voll | More |
| Operations Research | Barbara Baumeister | More |
| Orientierende Praxisstudien | Barbara Baumeister | More |
| Proseminar Coxetergruppen | Josh Maglione | More |
| Proseminar Konvexe Geometrie | Elena Tielker | More |
| Stochastik | Kai-Uwe Bux | More |
| Summer semester 2021 | ||
| Asymptotische Gruppentheorie | Christopher Voll | More |
| Diskrete Mathematik III: Kryptographie mit nicht-abelschen Gruppen | Barbara Baumeister | More |
| Einführung in die Logik | Kai-Uwe Bux | More |
| Lie Algebras and Lie Groups | Christopher Voll | More |
| Mathematik für Chemie II | Christopher Voll | More |
| Optimization and Dynamics | Viola Siconolfi | More |
| Winter semester 2020/2021 | ||
| Commutative Algebra and Algebraic Geometry | Christopher Voll | More |
| Discrete Mathematics II: Cryptography | Barbara Baumeister | More |
| Mathematics I for chemists | Christopher Voll | More |
| Optimization for Quatitative Economics | Seungjai Lee | More |
| Summer semester 2020 | ||
| Algebraic Number Theory | Christopher Voll | More |
| Discrete Mathematics I: Coding Theory | Barbara Baumeister | More |
| Knot Theory | Dawid Kielak | More |
| Mathematics for Natural Science II | Christopher Voll | More |
| Optimization and Dynamics | Joshua Maglione | More |
| Proseminar: Groups and Symmetries | Xiaolei Wu | More |
| Stochastics II | Kai-Uwe Bux | More |
| Winter semester 2019/2020 | ||
| 3-Manifolds | Dawid Kielak | More |
| Mathematics for Natural Science I | Christopher Voll | More |
| Operations Research | Barbara Baumeister | More |
| Proseminar: Graph Theory | Joshua Maglione | More |
| Proseminar: Groups and Graphs | Christoph Hilmes, Jonas Flechsig | More |
| Stochastics | Kai-Uwe Bux | More |
| Summer semester 2019 | ||
| \(L^2 \)-Invariants | Dawid Kielak | More |
| Algebra II | Mima Stanojkovski | More |
| Analysis II | Kai-Uwe Bux | More |
| Elementary number theory | Barbara Baumeister | More |
| Monster & Co: The finite simple groups | Barbara Baumeister | More |
| Winter semester 2018/2019 | ||
| Algebra I | Christopher Voll | More |
| Analysis I | Kai-Uwe Bux | More |
| Data and randomness | Barbara Baumeister | More |
| Diskrete Mathematik | Lukas Kühne | More |
| Masterseminar on non-crossing partitions, Coxeter- and Artin groups | Barbara Baumeister, Georges Neaime | More |
| Seminar | Link |
|---|---|
| Summer semester 2025 | |
| Oberseminar Groups and Geometry | More |
| Reading Group | More |
| Seminar | Link |
|---|---|
| Winter Semester 2024/2025 | |
| Lesegruppe | More |
| Oberseminar Groups and Geometry | More |
| Summer semester 2024 | |
| Oberseminar Groups and Geometry | More |
| Reading Group on Schubert Calculus and Young Tableaux | More |
| Winter Semester 2023/2024 | |
| AI methods in research mathematics | More |
| Oberseminar Groups and Geometry | More |
| Summer semester 2023 | |
| Oberseminar Groups and Geometry | More |
| Reading group: Mathematical data and machine learning | More |
| Reading group: Topological groups and dynamics | More |
| Winter semester 2022/2023 | |
| Oberseminar Groups and Geometry | More |
| Reading group on Sigma invariants | More |
| Reading group: Bjorner, Brenti, "Combinatorics of Coxeter Groups" | More |
| Summer semester 2022 | |
| Oberseminar Groups and Geometry | More |
| Reading group on Sigma invariants | More |
| Reading Group on Stanley's Combinatorics and Commutative Algebra book | More |
| Winter semester 2021/2022 | |
| Oberseminar Groups and Geometry | More |
| Reading group on Affine Buildings | More |
| Reading group on Sigma invariants | More |
| Summer semester 2021 | |
| Oberseminar Groups and Geometry | More |
| Reading group about big Mapping Class Groups | More |
| Reading group on tropical geometry | More |
| Winter semester 2020/2021 | |
| Oberseminar Groups and Geometry | More |
| Reading group about Thompson's groups | More |
| Reading group in asymptotic group theory | More |
| Summer semester 2020 | |
| Oberseminar Groups and Geometry | More |
| Reading Group: Asymptotic Group Theory | More |
| Winter semester 2019/2020 | |
| Oberseminar Groups and Geometry | More |
| Reading Group: Asymptotic Group Theory | More |
| Tuesday GGT | More |
| Summer semester 2019 | |
| BiMs | More |
| Friday GGT | More |
| Oberseminar Groups and Geometry | More |
| Reading group Asymptotic Group Theory | More |
| SYMBol | More |
| The Geometry of Coxeter and Artin Groups | More |
| Winter semester 2018/2019 | |
| BiMs | More |
| Oberseminar Groups and Geometry | More |
| Reading group Asymptotic Group Theory | More |
The Faculty of Mathematics will host this conference about outer space, groups of (outer) automorphisms of free groups and related topics.
The event is a summer school organised by Barbara Baumeister, Georges Neaime, and Sarah Rees.
The third instalment of the THGT conference series.
The conference is organized by Martina Juhnke-Kubitze, Lukas Kühne, Raman Sanyal, and Christopher Voll.
The aim is to bring together researchers studying algebraic objects using asymptotic and enumerative methods.
This is the fourth instalment of the THGT conference series. The conference takes place in Bielefeld in spring, and it welcomes researchers studying groups through their interactions with topology and homology.
A range of talks presenting recent research in group theory.