PhD Colloquia
June 4, 2025 – ISTA Klosterneuburg (room tba shortly before the talk)
4.45 pm: Adam Lindström (University of Vienna) – Decoupling a system of PDE’s using perturbation theory. A key to uncoupled Dirac-Yang-Mills fields.
Abstract: We will start by describing the Dirac-Yang-Mills system on a closed Riemannian manifold. This is a coupled system of elliptic PDE’s involving connections on and sections of vector
bundles over the base manifold. It has its origins in physics where, posed on a spacetime, it con-
stitutes a generalization of Maxwells equations and describes the interaction between fermions
(such as electrons or quarks) and a force field (such as the electromagnetic force or the strong
force).
The Dirac-Yang-Mills system are the Euler-Lagrange equations of the Dirac-Yang-Mills action
functional. However, this is unbounded in both directions, making proving existence of critical points challenging. In this talk we will therefore present a result which in many cases allows for the Dirac-Yang-Mills system to be decoupled into a pair of equations, the Yang-Mills and the Dirac equation, which are significantly easier to treat and which are separately well-studied in the closed Riemannian setting. We will describe how analytic perturbation theory gives an elegant characterization of this phenomenon.
You can find the poster here.
May 5, 2025 – SR03, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna
3.00 pm: Christian Puntini (University of Vienna) – Mathematical Models for Some Nonlinear Flows at the North Pole
April 7, 2025 – TUForMath Room, DEAGH18, Freihaus, TU Wien
3.30 pm: Lukas Koschat (TU Wien) – Broken dreams of bounds for integer roots
March 17, 2025 – TUForMath Room, DEAGH18, Freihaus, TU Wien
3.30 pm: Viola Garstenauer (TU Wien) – Cohabiting couples, and their role in tax policy
January 13, 2025 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
3.30 pm: Daniel Haider (University of Vienna, Austrian Academy of Sciences): The injectivity of ReLU layers and other non-linear measurements
4.50 pm: Lorenzo Pigozzi
(ISTA): Mathematical insights into density functional theory
December 9, 2024 – TUForMath Room, TU Wien (Freihaus)
3.30 pm: Fabian Zehetgruber (TU Wien) – Iterative Construction of Neural Networks
October 28, 2024 – TUForMath Room, Freihaus TU Wien (Wiedner Hauptstraße 8-10)
3.30 pm: Rossella Giorgio (TU Wien) – Nonlocal-to-local analysis of energies in micromagnetics
June 19, 2024 – joint seminar with the MIX colloquium (Mathematics In eXchange) from ISTA at ISTA; 4.30 pm to 6 pm, Mondi 3
Speaker 1 (ISTA): Oleksii Kolupaiev (Erdös Group) on Flow of fractional free convolution powers
Speaker 2 (Vienna): Yannic Wentzel (Schertzer Group, UniVie) on Why a football pitch can be a good approximation of a large species‘ habitat
June 10, 2024 – SR05, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
3 pm: Willi Kepplinger (University of Vienna): Why does the Klein Bottle look so weird?
April 15, 2024 – SR5, Oskar-Morgenstern-Platz 1, 1st floor (Faculty of Mathematics, University of Vienna)
3 pm: Julian Streitberger (TU Wien): 2Fast2Converge – Optimal convergence Rates for adaptive FEM
March 18, 2024 – TUForMath-Room at Freihaus TU Wien, Wiedner Hauptstraße 8-10, 1040 Wien
3 pm: Damiano De Gaspari (TU Wien): Superdiffusivity of the Stochastic Burgers Equation
January 15, 2024 – SR06, Oskar-Morgenstern-Platz 1, 1st floor (Faculty of Mathematics, University of Vienna)
3 pm: Thibaut Kouptchinsky (TU Wien): The Limits of Determinacy in Third-Order Arithmetic
4 pm: Florestan Brunck (ISTA): A Fast Algorithm for Turning your Room into a Dojo
December 11, 2023 – in Vortragsraum Bibliothek, Resselgasse 4, 1040 Vienna, 5th floor of the Library at TU Wien
4:00 pm: PhD Colloquium – Aditya Kapilavai: Singularity Distance Computation for Parallel
Manipulators of Stewart-Gough Type
November 6, 2023 – in SR5, Oskar-Morgenstern-Platz 1
3.00 pm: PhD Colloqium – Jakob Reiffenstein: Canonical systems of differential equations
October 16, 2023 Vortragsraum Bibliothek (Resselgasse 4, 1040 Vienna, 5th floor of the Library at TU Wien)
4.00 pm: PhD Colloquium – Matthias Ostermann: Stable Blowup for Semilinear Wave Equations
June 15, 2023 – SR8, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Eric Stenhede: How to build 3-manifolds
May 25, 2023 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Mina Monadjem: Existence of post-Lie algebra structures and decompositions of Lie algebras
April 27, 2023 – Zeichensaal 3, Freihaus, green area, 7th floor (TU Wien)
4.00 pm: PhD Colloquium – Manosij Ghosh Dastidar: Elementary methods in combinatorial problems regarding integer partitions
March 23, 2023 – Seminarraum AE U1 – 7 (TU Wien, Karlsplatz 13, AE)
3.00 pm: PhD Colloquium – Annamaria Massimini: The life and lies of of cross-diffusion systems
January 26, 2023 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
4.00 pm: PhD Colloquium – Stefan Portisch: Finite Volumes in a nutshell
or
„One way to teach your computer to produce (hopefully) nice graphics for your partial differential equation“
December 15, 2022 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
3.00 pm: PhD Colloquium – Andreas Nessmann: An introduction to lattice path combinatorics
November 16, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Julius Berner: Diffusion models
October 19, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Mikhail Karapetyants: An interesting application of an otherwise not so interesting theory
June 23, 2022 – HS15, Oskar-Morgenstern-Platz 1 & online
1.15 pm: PhD Colloquium – Katharina Brazda: Biomembranes, curves, and varifolds
May 12, 2022 – HS17, Oskar-Morgenstern-Platz 1, & online
3 pm: PhD Colloquium – Eva-Maria Hainzl: Generating functions and universal laws on coefficient asymptotics
April 6, 2022 – Sky Lounge, OMP1 & online
3 pm: PhD Colloqium – Zhangwen Guo: Generalized path geometries – studying systems of 2nd order ODEs with parabolic geometries
January 13, 2022 – online
2 pm: PhD Colloquium – Levi Haunschmid-Sibitz: Random fields, the Wiener Chaos Decomposition and a Stationary Diffusion
December 16, 2021 – online
2 pm: PhD Colloquium – Johannes Droschl: Special values of L-functions
December 9, 2021 – online
2 pm: PhD Colloquium – Randy Llerena: Variational solutions in the dynamical perfect elasto-plasticity
November 25, 2021 – online
2 pm: PhD Colloquium – Andrea Scaglioni: Numerical approximation of PDEs with random coefficients
June 24, 2021 – online
2 pm: PhD Colloquium – Steffen Plunder: Programming in Julia: What is multiple dispatch and how it could help in combining different fields of maths
May 20, 2021 – online
2 pm: PhD Colloquium – Georg Hofstätter: Isoperimetric Inequalities for Minkowski Endomorphisms
April 15, 2021 – online
2 pm: PhD Colloquium – Chiara Novarini: The DAHA of type $GL_n$, Tableaux and Quantum Groups
March 18, 2021 – online
2 pm: PhD Colloquium – Tobias Danczul: An Introduction to the Numerical Approximation of Fractional PDEs
January 14, 2021 – online
1 pm: PhD Colloquium – Denis Polly: Discrete Weierstrass-type representations
December 10, 2020 – online
2 pm: PhD Colloquium – Laura Kanzler: Kinetic Modelling of Colonies of Myxobacteria
December 3, 2020 – online
2 pm: PhD Colloquium – Stephan Pfannerer-Mittas: Standard Young Tableaux and the Representation Theory of the Symmetric Group
November 26, 2020 – online
3 pm: PhD Colloqium – Michael Sedlmayer:
Fantastic Minimax Problems – What Are Solutions and How to Find Them
June 18, 2020 – online
2 pm: PhD Colloquium – Benedict Schinnerl: Singularity-Theorems from Non-Trivial Topology
May 14, 2020 – online
2 pm: PhD Colloquium – Valerie Roitner: Pattern Avoidance in Lattice Paths
Please find the slides here.
March 4, 2020 – HS11 (Hauptgebäude TU Wien)
1 pm: PhD Colloquium – Lukas Fertl: An introduction to sufficient dimension reduction, conditional variance estimator
January 15, 2020 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Axel Böhm: How machines learn or minimizing training loss
December 4, 2019 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Philipp Kniefacz: Sharp Sobolev Inequalities via Projection Averages
October 23, 2019 – Sky Lounge, OMP 1
2 pm: VSM Info Day
3 pm: PhD Colloquium – Alexander Pichler: An introduction to virtual element methods for the Helmholtz problem
June 19, 2019 – Sky Lounge, OMP 1
2 pm: PhD Colloquium – David Melching: How does steel deform? An introduction to elastoplastic materials and damage
May 22, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Noema Nicolussi: An Introduction to Spectral Theory of Laplacians on Graphs
April 10, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Giancarlo Castellano: The Importance of Being Totally Disconnected
3 pm: PhD Colloquium – Denise Schmutz: Three-dimensional Motion Reconstruction from Projection Data
3 pm: PhD Colloquium – Hana Melánová: Geometric Invariants of Surfaces as Natural Objects
3 pm: PhD Colloquium – Florian Aigner: An Introduction to Alternating Sign Matrices (A Combinatorial Story of Missing Bijections)
3 pm: PhD Colloquium – Mateusz Piorkowski: When Waves Behave Like Particles
1.45 pm: PhD Colloquium – Daniel Scherl: What the heck is TQFT?
1.45 pm: PhD Colloquium – Gianluca Favre: An introduction for a weak formulation. Why do we look for a weak solution?
1.30 pm: PhD Colloquium – Paola Lopez: An Adelic Approach to Number Theory
3 pm: PhD Colloquium – Manjil Saikia: Perfect Matchings and Tiling Problems
3 pm: PhD Colloquium – Franz Berger: The d-bar-Neumann problem in several complex variables
1 pm: VDS Mathematics Info Day
3.15 pm: PhD Colloquium – Diana Carolina Montoya: Cardinal Invariants of the Continuum and the Structure of the Real Line
3.15 pm: PhD Colloquium – Gabriel Strasser: An Introduction to Symbolic Dynamics
3 pm: PhD Colloquium – Hongyi Chu: An Introduction to Multicategories and Higher Categories
3 pm: PhD Colloquium – Sascha Biberhofer: An Introduction to Arithmetic Groups
3 pm: PhD Colloquium – Anastasiia Zalashko: Introduction to Optimal Transport
3 pm: PhD Colloquium – Christopher Chiu: Introduction to the Nash Problem
3 pm: PhD Colloquium – Robin Sulzgruber: An Introduction to Algebraic Combinatorics
3 pm: PhD Colloquium – Melanie Graf: The singularity theorems of Lorentzian geometryo
The next PhD Colloquium will be
given by Jakob Reiffenstein on Monday, November 6, at 3 pm in SR5, Oskar-Morgenstern-Platz 1
And there will be two more Colloquia this semester on
December 11, 2023 – in
***
October 16, 2023 – in Vortragsraum Bibliothek, Resselgasse 4, 1040 Vienna, 5th floor of the Library at TU Wien
4.00 pm: PhD Colloquium – Matthias Ostermann: Stable Blowup for Semilinear Wave Equations
Nonlinear wave equations exhibit a wide variety of fascinating dynamics. Among them is the formation of singularities in finite time from smooth initial data. This is illustrated e.g. for wave equations with focusing power nonlinearities by an explicit solution, the so-called ODE blowup, in all space dimensions. Whether this blowup mechanism plays a universal role in the generic wave evolution leads to the central question about its stability. This talk gives an elementary introduction to the ideas and methods behind a recently developed stability theory for blowup in wave equations with application to the ODE blowup.
Please find the poster here.
June 15, 2023 – SR8, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Eric Stenhede: How to build 3-manifolds
A manifold is a topological space that is Hausdorff, second countable, and locally homeomorphic to Euclidean space. While it is relatively easy to visualize 0-, 1-, and 2-dimensional manifolds, it becomes more challenging to picture the higher-dimensional ones. In the case of dimension 3, we can only imagine the local model, the 3-dimensional Euclidean space. However, by adopting certain conventions, we can go beyond that and develop a certain feeling for what 3-manifolds look like.
In this talk, I will discuss and survey various methods for constructing and visualizing 3-dimensional manifolds: triangulations, Heegaard splittings, and surgery diagrams. The goal is to sketch the proof of the Lickorish-Wallace theorem.
If time permits, I will also discuss the relationship between 3-dimensional and 4-dimensional topology through handle decompositions.
Please find the poster here.
May 25, 2023 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Mina Monadjem: Existence of post-Lie algebra structures and decompositions of Lie algebras
April 27, 2023 – Zeichensaal 3, Freihaus, green area, 7th floor (TU Wien)
4.00 pm: PhD Colloquium – Manosij Ghosh Dastidar: Elementary methods in combinatorial problems regarding integer partitions
March 23, 2023 – Seminarraum AE U1 – 7 (TU Wien, Karlsplatz 13, AE)
3.00 pm: PhD Colloquium – Annamaria Massimini: The life and lies of of cross-diffusion systems
January 26, 2023 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
4.00 pm: PhD Colloquium – Stefan Portisch: Finite Volumes in a nutshell
or
„One way to teach your computer to produce (hopefully) nice graphics for your partial differential equation“
December 15, 2022 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
3.00 pm: PhD Colloquium – Andreas Nessmann: An introduction to lattice path combinatorics
November 16, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Julius Berner: Diffusion models
October 19, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Mikhail Karapetyants: An interesting application of an otherwise not so interesting theory
June 23, 2022 – HS15, Oskar-Morgenstern-Platz 1 & online
1.15 pm: PhD Colloquium – Katharina Brazda: Biomembranes, curves, and varifolds
May 12, 2022 – HS17, Oskar-Morgenstern-Platz 1, & online
3 pm: PhD Colloquium – Eva-Maria Hainzl: Generating functions and universal laws on coefficient asymptotics
April 6, 2022 – Sky Lounge, OMP1 & online
3 pm: PhD Colloqium – Zhangwen Guo: Generalized path geometries – studying systems of 2nd order ODEs with parabolic geometries
January 13, 2022 – online
2 pm: PhD Colloquium – Levi Haunschmid-Sibitz: Random fields, the Wiener Chaos Decomposition and a Stationary Diffusion
December 16, 2021 – online
2 pm: PhD Colloquium – Johannes Droschl: Special values of L-functions
December 9, 2021 – online
2 pm: PhD Colloquium – Randy Llerena: Variational solutions in the dynamical perfect elasto-plasticity
November 25, 2021 – online
2 pm: PhD Colloquium – Andrea Scaglioni: Numerical approximation of PDEs with random coefficients
June 24, 2021 – online
2 pm: PhD Colloquium – Steffen Plunder: Programming in Julia: What is multiple dispatch and how it could help in combining different fields of maths
May 20, 2021 – online
2 pm: PhD Colloquium – Georg Hofstätter: Isoperimetric Inequalities for Minkowski Endomorphisms
April 15, 2021 – online
2 pm: PhD Colloquium – Chiara Novarini: The DAHA of type $GL_n$, Tableaux and Quantum Groups
March 18, 2021 – online
2 pm: PhD Colloquium – Tobias Danczul: An Introduction to the Numerical Approximation of Fractional PDEs
January 14, 2021 – online
1 pm: PhD Colloquium – Denis Polly: Discrete Weierstrass-type representations
December 10, 2020 – online
2 pm: PhD Colloquium – Laura Kanzler: Kinetic Modelling of Colonies of Myxobacteria
December 3, 2020 – online
2 pm: PhD Colloquium – Stephan Pfannerer-Mittas: Standard Young Tableaux and the Representation Theory of the Symmetric Group
November 26, 2020 – online
3 pm: PhD Colloqium – Michael Sedlmayer:
Fantastic Minimax Problems – What Are Solutions and How to Find Them
June 18, 2020 – online
2 pm: PhD Colloquium – Benedict Schinnerl: Singularity-Theorems from Non-Trivial Topology
May 14, 2020 – online
2 pm: PhD Colloquium – Valerie Roitner: Pattern Avoidance in Lattice Paths
Please find the slides here.
March 4, 2020 – HS11 (Hauptgebäude TU Wien)
1 pm: PhD Colloquium – Lukas Fertl: An introduction to sufficient dimension reduction, conditional variance estimator
January 15, 2020 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Axel Böhm: How machines learn or minimizing training loss
December 4, 2019 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Philipp Kniefacz: Sharp Sobolev Inequalities via Projection Averages
October 23, 2019 – Sky Lounge, OMP 1
2 pm: VSM Info Day
3 pm: PhD Colloquium – Alexander Pichler: An introduction to virtual element methods for the Helmholtz problem
June 19, 2019 – Sky Lounge, OMP 1
2 pm: PhD Colloquium – David Melching: How does steel deform? An introduction to elastoplastic materials and damage
May 22, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Noema Nicolussi: An Introduction to Spectral Theory of Laplacians on Graphs
April 10, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Giancarlo Castellano: The Importance of Being Totally Disconnected
3 pm: PhD Colloquium – Denise Schmutz: Three-dimensional Motion Reconstruction from Projection Data
3 pm: PhD Colloquium – Hana Melánová: Geometric Invariants of Surfaces as Natural Objects
3 pm: PhD Colloquium – Florian Aigner: An Introduction to Alternating Sign Matrices (A Combinatorial Story of Missing Bijections)
3 pm: PhD Colloquium – Mateusz Piorkowski: When Waves Behave Like Particles
1.45 pm: PhD Colloquium – Daniel Scherl: What the heck is TQFT?
1.45 pm: PhD Colloquium – Gianluca Favre: An introduction for a weak formulation. Why do we look for a weak solution?
1.30 pm: PhD Colloquium – Paola Lopez: An Adelic Approach to Number Theory
3 pm: PhD Colloquium – Manjil Saikia: Perfect Matchings and Tiling Problems
3 pm: PhD Colloquium – Franz Berger: The d-bar-Neumann problem in several complex variables
1 pm: VDS Mathematics Info Day
3.15 pm: PhD Colloquium – Diana Carolina Montoya: Cardinal Invariants of the Continuum and the Structure of the Real Line
3.15 pm: PhD Colloquium – Gabriel Strasser: An Introduction to Symbolic Dynamics
3 pm: PhD Colloquium – Hongyi Chu: An Introduction to Multicategories and Higher Categories
3 pm: PhD Colloquium – Sascha Biberhofer: An Introduction to Arithmetic Groups
3 pm: PhD Colloquium – Anastasiia Zalashko: Introduction to Optimal Transport
3 pm: PhD Colloquium – Christopher Chiu: Introduction to the Nash Problem
3 pm: PhD Colloquium – Robin Sulzgruber: An Introduction to Algebraic Combinatorics
3 pm: PhD Colloquium – Melanie Graf: The singularity theorems of Lorentzian geometry
The next PhD Colloquium will be
given by Jakob Reiffenstein on Monday, November 6, at 3 pm in SR5, Oskar-Morgenstern-Platz 1
And there will be two more Colloquia this semester on
December 11, 2023 – in
***
October 16, 2023 – in Vortragsraum Bibliothek, Resselgasse 4, 1040 Vienna, 5th floor of the Library at TU Wien
4.00 pm: PhD Colloquium – Matthias Ostermann: Stable Blowup for Semilinear Wave Equations
Nonlinear wave equations exhibit a wide variety of fascinating dynamics. Among them is the formation of singularities in finite time from smooth initial data. This is illustrated e.g. for wave equations with focusing power nonlinearities by an explicit solution, the so-called ODE blowup, in all space dimensions. Whether this blowup mechanism plays a universal role in the generic wave evolution leads to the central question about its stability. This talk gives an elementary introduction to the ideas and methods behind a recently developed stability theory for blowup in wave equations with application to the ODE blowup.
Please find the poster here.
June 15, 2023 – SR8, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Eric Stenhede: How to build 3-manifolds
A manifold is a topological space that is Hausdorff, second countable, and locally homeomorphic to Euclidean space. While it is relatively easy to visualize 0-, 1-, and 2-dimensional manifolds, it becomes more challenging to picture the higher-dimensional ones. In the case of dimension 3, we can only imagine the local model, the 3-dimensional Euclidean space. However, by adopting certain conventions, we can go beyond that and develop a certain feeling for what 3-manifolds look like.
In this talk, I will discuss and survey various methods for constructing and visualizing 3-dimensional manifolds: triangulations, Heegaard splittings, and surgery diagrams. The goal is to sketch the proof of the Lickorish-Wallace theorem.
If time permits, I will also discuss the relationship between 3-dimensional and 4-dimensional topology through handle decompositions.
Please find the poster here.
May 25, 2023 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Mina Monadjem: Existence of post-Lie algebra structures and decompositions of Lie algebras
April 27, 2023 – Zeichensaal 3, Freihaus, green area, 7th floor (TU Wien)
4.00 pm: PhD Colloquium – Manosij Ghosh Dastidar: Elementary methods in combinatorial problems regarding integer partitions
March 23, 2023 – Seminarraum AE U1 – 7 (TU Wien, Karlsplatz 13, AE)
3.00 pm: PhD Colloquium – Annamaria Massimini: The life and lies of of cross-diffusion systems
January 26, 2023 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
4.00 pm: PhD Colloquium – Stefan Portisch: Finite Volumes in a nutshell
or
„One way to teach your computer to produce (hopefully) nice graphics for your partial differential equation“
December 15, 2022 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
3.00 pm: PhD Colloquium – Andreas Nessmann: An introduction to lattice path combinatorics
November 16, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Julius Berner: Diffusion models
October 19, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Mikhail Karapetyants: An interesting application of an otherwise not so interesting theory
June 23, 2022 – HS15, Oskar-Morgenstern-Platz 1 & online
1.15 pm: PhD Colloquium – Katharina Brazda: Biomembranes, curves, and varifolds
May 12, 2022 – HS17, Oskar-Morgenstern-Platz 1, & online
3 pm: PhD Colloquium – Eva-Maria Hainzl: Generating functions and universal laws on coefficient asymptotics
April 6, 2022 – Sky Lounge, OMP1 & online
3 pm: PhD Colloqium – Zhangwen Guo: Generalized path geometries – studying systems of 2nd order ODEs with parabolic geometries
January 13, 2022 – online
2 pm: PhD Colloquium – Levi Haunschmid-Sibitz: Random fields, the Wiener Chaos Decomposition and a Stationary Diffusion
December 16, 2021 – online
2 pm: PhD Colloquium – Johannes Droschl: Special values of L-functions
December 9, 2021 – online
2 pm: PhD Colloquium – Randy Llerena: Variational solutions in the dynamical perfect elasto-plasticity
November 25, 2021 – online
2 pm: PhD Colloquium – Andrea Scaglioni: Numerical approximation of PDEs with random coefficients
June 24, 2021 – online
2 pm: PhD Colloquium – Steffen Plunder: Programming in Julia: What is multiple dispatch and how it could help in combining different fields of maths
May 20, 2021 – online
2 pm: PhD Colloquium – Georg Hofstätter: Isoperimetric Inequalities for Minkowski Endomorphisms
April 15, 2021 – online
2 pm: PhD Colloquium – Chiara Novarini: The DAHA of type $GL_n$, Tableaux and Quantum Groups
March 18, 2021 – online
2 pm: PhD Colloquium – Tobias Danczul: An Introduction to the Numerical Approximation of Fractional PDEs
January 14, 2021 – online
1 pm: PhD Colloquium – Denis Polly: Discrete Weierstrass-type representations
December 10, 2020 – online
2 pm: PhD Colloquium – Laura Kanzler: Kinetic Modelling of Colonies of Myxobacteria
December 3, 2020 – online
2 pm: PhD Colloquium – Stephan Pfannerer-Mittas: Standard Young Tableaux and the Representation Theory of the Symmetric Group
November 26, 2020 – online
3 pm: PhD Colloqium – Michael Sedlmayer:
Fantastic Minimax Problems – What Are Solutions and How to Find Them
June 18, 2020 – online
2 pm: PhD Colloquium – Benedict Schinnerl: Singularity-Theorems from Non-Trivial Topology
May 14, 2020 – online
2 pm: PhD Colloquium – Valerie Roitner: Pattern Avoidance in Lattice Paths
Please find the slides here.
March 4, 2020 – HS11 (Hauptgebäude TU Wien)
1 pm: PhD Colloquium – Lukas Fertl: An introduction to sufficient dimension reduction, conditional variance estimator
January 15, 2020 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Axel Böhm: How machines learn or minimizing training loss
December 4, 2019 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Philipp Kniefacz: Sharp Sobolev Inequalities via Projection Averages
October 23, 2019 – Sky Lounge, OMP 1
2 pm: VSM Info Day
3 pm: PhD Colloquium – Alexander Pichler: An introduction to virtual element methods for the Helmholtz problem
June 19, 2019 – Sky Lounge, OMP 1
2 pm: PhD Colloquium – David Melching: How does steel deform? An introduction to elastoplastic materials and damage
May 22, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Noema Nicolussi: An Introduction to Spectral Theory of Laplacians on Graphs
April 10, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Giancarlo Castellano: The Importance of Being Totally Disconnected
3 pm: PhD Colloquium – Denise Schmutz: Three-dimensional Motion Reconstruction from Projection Data
3 pm: PhD Colloquium – Hana Melánová: Geometric Invariants of Surfaces as Natural Objects
3 pm: PhD Colloquium – Florian Aigner: An Introduction to Alternating Sign Matrices (A Combinatorial Story of Missing Bijections)
3 pm: PhD Colloquium – Mateusz Piorkowski: When Waves Behave Like Particles
1.45 pm: PhD Colloquium – Daniel Scherl: What the heck is TQFT?
1.45 pm: PhD Colloquium – Gianluca Favre: An introduction for a weak formulation. Why do we look for a weak solution?
1.30 pm: PhD Colloquium – Paola Lopez: An Adelic Approach to Number Theory
3 pm: PhD Colloquium – Manjil Saikia: Perfect Matchings and Tiling Problems
3 pm: PhD Colloquium – Franz Berger: The d-bar-Neumann problem in several complex variables
1 pm: VDS Mathematics Info Day
3.15 pm: PhD Colloquium – Diana Carolina Montoya: Cardinal Invariants of the Continuum and the Structure of the Real Line
3.15 pm: PhD Colloquium – Gabriel Strasser: An Introduction to Symbolic Dynamics
3 pm: PhD Colloquium – Hongyi Chu: An Introduction to Multicategories and Higher Categories
3 pm: PhD Colloquium – Sascha Biberhofer: An Introduction to Arithmetic Groups
3 pm: PhD Colloquium – Anastasiia Zalashko: Introduction to Optimal Transport
3 pm: PhD Colloquium – Christopher Chiu: Introduction to the Nash Problem
3 pm: PhD Colloquium – Robin Sulzgruber: An Introduction to Algebraic Combinatorics
3 pm: PhD Colloquium – Melanie Graf: The singularity theorems of Lorentzian geometry
The next PhD Colloquia will be
given by Matthias Ostermann on Monday, October 16, at 4 pm in Vortragsraum Bibliothek
and by Jakob Reiffenstein on Monday, November 6, at 3 pm in SR5, Oskar-Morgenstern-Platz 1
***
October 16, 2023 –
June 15, 2023 – SR8, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Eric Stenhede: How to build 3-manifolds
A manifold is a topological space that is Hausdorff, second countable, and locally homeomorphic to Euclidean space. While it is relatively easy to visualize 0-, 1-, and 2-dimensional manifolds, it becomes more challenging to picture the higher-dimensional ones. In the case of dimension 3, we can only imagine the local model, the 3-dimensional Euclidean space. However, by adopting certain conventions, we can go beyond that and develop a certain feeling for what 3-manifolds look like.
In this talk, I will discuss and survey various methods for constructing and visualizing 3-dimensional manifolds: triangulations, Heegaard splittings, and surgery diagrams. The goal is to sketch the proof of the Lickorish-Wallace theorem.
If time permits, I will also discuss the relationship between 3-dimensional and 4-dimensional topology through handle decompositions.
Please find the poster here.
May 25, 2023 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Mina Monadjem: Existence of post-Lie algebra structures and decompositions of Lie algebras
April 27, 2023 – Zeichensaal 3, Freihaus, green area, 7th floor (TU Wien)
4.00 pm: PhD Colloquium – Manosij Ghosh Dastidar: Elementary methods in combinatorial problems regarding integer partitions
March 23, 2023 – Seminarraum AE U1 – 7 (TU Wien, Karlsplatz 13, AE)
3.00 pm: PhD Colloquium – Annamaria Massimini: The life and lies of of cross-diffusion systems
January 26, 2023 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
4.00 pm: PhD Colloquium – Stefan Portisch: Finite Volumes in a nutshell
or
„One way to teach your computer to produce (hopefully) nice graphics for your partial differential equation“
December 15, 2022 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
3.00 pm: PhD Colloquium – Andreas Nessmann: An introduction to lattice path combinatorics
November 16, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Julius Berner: Diffusion models
October 19, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Mikhail Karapetyants: An interesting application of an otherwise not so interesting theory
June 23, 2022 – HS15, Oskar-Morgenstern-Platz 1 & online
1.15 pm: PhD Colloquium – Katharina Brazda: Biomembranes, curves, and varifolds
May 12, 2022 – HS17, Oskar-Morgenstern-Platz 1, & online
3 pm: PhD Colloquium – Eva-Maria Hainzl: Generating functions and universal laws on coefficient asymptotics
April 6, 2022 – Sky Lounge, OMP1 & online
3 pm: PhD Colloqium – Zhangwen Guo: Generalized path geometries – studying systems of 2nd order ODEs with parabolic geometries
January 13, 2022 – online
2 pm: PhD Colloquium – Levi Haunschmid-Sibitz: Random fields, the Wiener Chaos Decomposition and a Stationary Diffusion
December 16, 2021 – online
2 pm: PhD Colloquium – Johannes Droschl: Special values of L-functions
December 9, 2021 – online
2 pm: PhD Colloquium – Randy Llerena: Variational solutions in the dynamical perfect elasto-plasticity
November 25, 2021 – online
2 pm: PhD Colloquium – Andrea Scaglioni: Numerical approximation of PDEs with random coefficients
June 24, 2021 – online
2 pm: PhD Colloquium – Steffen Plunder: Programming in Julia: What is multiple dispatch and how it could help in combining different fields of maths
May 20, 2021 – online
2 pm: PhD Colloquium – Georg Hofstätter: Isoperimetric Inequalities for Minkowski Endomorphisms
April 15, 2021 – online
2 pm: PhD Colloquium – Chiara Novarini: The DAHA of type $GL_n$, Tableaux and Quantum Groups
March 18, 2021 – online
2 pm: PhD Colloquium – Tobias Danczul: An Introduction to the Numerical Approximation of Fractional PDEs
January 14, 2021 – online
1 pm: PhD Colloquium – Denis Polly: Discrete Weierstrass-type representations
December 10, 2020 – online
2 pm: PhD Colloquium – Laura Kanzler: Kinetic Modelling of Colonies of Myxobacteria
December 3, 2020 – online
2 pm: PhD Colloquium – Stephan Pfannerer-Mittas: Standard Young Tableaux and the Representation Theory of the Symmetric Group
November 26, 2020 – online
3 pm: PhD Colloqium – Michael Sedlmayer:
Fantastic Minimax Problems – What Are Solutions and How to Find Them
June 18, 2020 – online
2 pm: PhD Colloquium – Benedict Schinnerl: Singularity-Theorems from Non-Trivial Topology
May 14, 2020 – online
2 pm: PhD Colloquium – Valerie Roitner: Pattern Avoidance in Lattice Paths
Please find the slides here.
March 4, 2020 – HS11 (Hauptgebäude TU Wien)
1 pm: PhD Colloquium – Lukas Fertl: An introduction to sufficient dimension reduction, conditional variance estimator
January 15, 2020 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Axel Böhm: How machines learn or minimizing training loss
December 4, 2019 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Philipp Kniefacz: Sharp Sobolev Inequalities via Projection Averages
October 23, 2019 – Sky Lounge, OMP 1
2 pm: VSM Info Day
3 pm: PhD Colloquium – Alexander Pichler: An introduction to virtual element methods for the Helmholtz problem
June 19, 2019 – Sky Lounge, OMP 1
2 pm: PhD Colloquium – David Melching: How does steel deform? An introduction to elastoplastic materials and damage
May 22, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Noema Nicolussi: An Introduction to Spectral Theory of Laplacians on Graphs
April 10, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Giancarlo Castellano: The Importance of Being Totally Disconnected
3 pm: PhD Colloquium – Denise Schmutz: Three-dimensional Motion Reconstruction from Projection Data
3 pm: PhD Colloquium – Hana Melánová: Geometric Invariants of Surfaces as Natural Objects
3 pm: PhD Colloquium – Florian Aigner: An Introduction to Alternating Sign Matrices (A Combinatorial Story of Missing Bijections)
3 pm: PhD Colloquium – Mateusz Piorkowski: When Waves Behave Like Particles
1.45 pm: PhD Colloquium – Daniel Scherl: What the heck is TQFT?
1.45 pm: PhD Colloquium – Gianluca Favre: An introduction for a weak formulation. Why do we look for a weak solution?
1.30 pm: PhD Colloquium – Paola Lopez: An Adelic Approach to Number Theory
3 pm: PhD Colloquium – Manjil Saikia: Perfect Matchings and Tiling Problems
3 pm: PhD Colloquium – Franz Berger: The d-bar-Neumann problem in several complex variables
1 pm: VDS Mathematics Info Day
3.15 pm: PhD Colloquium – Diana Carolina Montoya: Cardinal Invariants of the Continuum and the Structure of the Real Line
3.15 pm: PhD Colloquium – Gabriel Strasser: An Introduction to Symbolic Dynamics
3 pm: PhD Colloquium – Hongyi Chu: An Introduction to Multicategories and Higher Categories
3 pm: PhD Colloquium – Sascha Biberhofer: An Introduction to Arithmetic Groups
3 pm: PhD Colloquium – Anastasiia Zalashko: Introduction to Optimal Transport
3 pm: PhD Colloquium – Christopher Chiu: Introduction to the Nash Problem
3 pm: PhD Colloquium – Robin Sulzgruber: An Introduction to Algebraic Combinatorics
3 pm: PhD Colloquium – Melanie Graf: The singularity theorems of Lorentzian geometry
The next PhD Colloquia will be
given by Matthias Ostermann on Monday, October 16, at 4 pm in Vortragsraum Bibliothek
and by Jakob Reiffenstein on Monday, November 6, at 3 pm in SR5, Oskar-Morgenstern-Platz 1
***
October 16, 2023 –
June 15, 2023 – SR8, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Eric Stenhede: How to build 3-manifolds
A manifold is a topological space that is Hausdorff, second countable, and locally homeomorphic to Euclidean space. While it is relatively easy to visualize 0-, 1-, and 2-dimensional manifolds, it becomes more challenging to picture the higher-dimensional ones. In the case of dimension 3, we can only imagine the local model, the 3-dimensional Euclidean space. However, by adopting certain conventions, we can go beyond that and develop a certain feeling for what 3-manifolds look like.
In this talk, I will discuss and survey various methods for constructing and visualizing 3-dimensional manifolds: triangulations, Heegaard splittings, and surgery diagrams. The goal is to sketch the proof of the Lickorish-Wallace theorem.
If time permits, I will also discuss the relationship between 3-dimensional and 4-dimensional topology through handle decompositions.
Please find the poster here.
May 25, 2023 – SR13, Oskar-Morgenstern-Platz 1 (Faculty of Mathematics, University of Vienna)
2.00 pm: PhD Colloqium – Mina Monadjem: Existence of post-Lie algebra structures and decompositions of Lie algebras
April 27, 2023 – Zeichensaal 3, Freihaus, green area, 7th floor (TU Wien)
4.00 pm: PhD Colloquium – Manosij Ghosh Dastidar: Elementary methods in combinatorial problems regarding integer partitions
March 23, 2023 – Seminarraum AE U1 – 7 (TU Wien, Karlsplatz 13, AE)
3.00 pm: PhD Colloquium – Annamaria Massimini: The life and lies of of cross-diffusion systems
January 26, 2023 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
4.00 pm: PhD Colloquium – Stefan Portisch: Finite Volumes in a nutshell
or
„One way to teach your computer to produce (hopefully) nice graphics for your partial differential equation“
December 15, 2022 – Seminar Raum DA grün 03 A, TU Wien (Freihaus, Wiedner Hauptstraße 8-10)
3.00 pm: PhD Colloquium – Andreas Nessmann: An introduction to lattice path combinatorics
November 16, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Julius Berner: Diffusion models
October 19, 2022 – Sky Lounge, Oskar-Morgenstern-Platz 1
2.00 pm: PhD Colloquium – Mikhail Karapetyants: An interesting application of an otherwise not so interesting theory
June 23, 2022 – HS15, Oskar-Morgenstern-Platz 1 & online
1.15 pm: PhD Colloquium – Katharina Brazda: Biomembranes, curves, and varifolds
May 12, 2022 – HS17, Oskar-Morgenstern-Platz 1, & online
3 pm: PhD Colloquium – Eva-Maria Hainzl: Generating functions and universal laws on coefficient asymptotics
April 6, 2022 – Sky Lounge, OMP1 & online
3 pm: PhD Colloqium – Zhangwen Guo: Generalized path geometries – studying systems of 2nd order ODEs with parabolic geometries
January 13, 2022 – online
2 pm: PhD Colloquium – Levi Haunschmid-Sibitz: Random fields, the Wiener Chaos Decomposition and a Stationary Diffusion
December 16, 2021 – online
2 pm: PhD Colloquium – Johannes Droschl: Special values of L-functions
December 9, 2021 – online
2 pm: PhD Colloquium – Randy Llerena: Variational solutions in the dynamical perfect elasto-plasticity
November 25, 2021 – online
2 pm: PhD Colloquium – Andrea Scaglioni: Numerical approximation of PDEs with random coefficients
June 24, 2021 – online
2 pm: PhD Colloquium – Steffen Plunder: Programming in Julia: What is multiple dispatch and how it could help in combining different fields of maths
May 20, 2021 – online
2 pm: PhD Colloquium – Georg Hofstätter: Isoperimetric Inequalities for Minkowski Endomorphisms
April 15, 2021 – online
2 pm: PhD Colloquium – Chiara Novarini: The DAHA of type $GL_n$, Tableaux and Quantum Groups
March 18, 2021 – online
2 pm: PhD Colloquium – Tobias Danczul: An Introduction to the Numerical Approximation of Fractional PDEs
January 14, 2021 – online
1 pm: PhD Colloquium – Denis Polly: Discrete Weierstrass-type representations
December 10, 2020 – online
2 pm: PhD Colloquium – Laura Kanzler: Kinetic Modelling of Colonies of Myxobacteria
December 3, 2020 – online
2 pm: PhD Colloquium – Stephan Pfannerer-Mittas: Standard Young Tableaux and the Representation Theory of the Symmetric Group
November 26, 2020 – online
3 pm: PhD Colloqium – Michael Sedlmayer:
Fantastic Minimax Problems – What Are Solutions and How to Find Them
June 18, 2020 – online
2 pm: PhD Colloquium – Benedict Schinnerl: Singularity-Theorems from Non-Trivial Topology
May 14, 2020 – online
2 pm: PhD Colloquium – Valerie Roitner: Pattern Avoidance in Lattice Paths
Please find the slides here.
March 4, 2020 – HS11 (Hauptgebäude TU Wien)
1 pm: PhD Colloquium – Lukas Fertl: An introduction to sufficient dimension reduction, conditional variance estimator
January 15, 2020 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Axel Böhm: How machines learn or minimizing training loss
December 4, 2019 – Sky Lounge, OMP1
3 pm: PhD Colloqium – Philipp Kniefacz: Sharp Sobolev Inequalities via Projection Averages
October 23, 2019 – Sky Lounge, OMP 1
2 pm: VSM Info Day
3 pm: PhD Colloquium – Alexander Pichler: An introduction to virtual element methods for the Helmholtz problem
June 19, 2019 – Sky Lounge, OMP 1
2 pm: PhD Colloquium – David Melching: How does steel deform? An introduction to elastoplastic materials and damage
May 22, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Noema Nicolussi: An Introduction to Spectral Theory of Laplacians on Graphs
April 10, 2019 – Sky Lounge, OMP 1
3 pm: PhD Colloquium – Giancarlo Castellano: The Importance of Being Totally Disconnected
3 pm: PhD Colloquium – Denise Schmutz: Three-dimensional Motion Reconstruction from Projection Data
3 pm: PhD Colloquium – Hana Melánová: Geometric Invariants of Surfaces as Natural Objects
3 pm: PhD Colloquium – Florian Aigner: An Introduction to Alternating Sign Matrices (A Combinatorial Story of Missing Bijections)
3 pm: PhD Colloquium – Mateusz Piorkowski: When Waves Behave Like Particles
1.45 pm: PhD Colloquium – Daniel Scherl: What the heck is TQFT?
1.45 pm: PhD Colloquium – Gianluca Favre: An introduction for a weak formulation. Why do we look for a weak solution?
1.30 pm: PhD Colloquium – Paola Lopez: An Adelic Approach to Number Theory
3 pm: PhD Colloquium – Manjil Saikia: Perfect Matchings and Tiling Problems
3 pm: PhD Colloquium – Franz Berger: The d-bar-Neumann problem in several complex variables
1 pm: VDS Mathematics Info Day
3.15 pm: PhD Colloquium – Diana Carolina Montoya: Cardinal Invariants of the Continuum and the Structure of the Real Line
3.15 pm: PhD Colloquium – Gabriel Strasser: An Introduction to Symbolic Dynamics
3 pm: PhD Colloquium – Hongyi Chu: An Introduction to Multicategories and Higher Categories
3 pm: PhD Colloquium – Sascha Biberhofer: An Introduction to Arithmetic Groups
3 pm: PhD Colloquium – Anastasiia Zalashko: Introduction to Optimal Transport
3 pm: PhD Colloquium – Christopher Chiu: Introduction to the Nash Problem
3 pm: PhD Colloquium – Robin Sulzgruber: An Introduction to Algebraic Combinatorics
3 pm: PhD Colloquium – Melanie Graf: The singularity theorems of Lorentzian geometry