Viktor Stein

PhD candidate, Applied Mathematics Group
Technische Universität Berlin

I am a PhD candidate in the Applied Mathematics Group led by Gabriele Steidl at TU Berlin working on Wasserstein gradient flows, regularized f-divergences and regularized optimal transport.

My master's thesis "Wasserstein gradient flows with an eye towards positive matrix measures" (2023) is about sparse convex optimisation in spaces of measures and my bachelor's thesis is entitled "Atomic Norm Minimization for Superresolution" (2021).

When I am not doing maths, you can find me visiting the opera or the concert hall or playing badminton and table tennis.

Preprints

Talks and posters

Expository Talks

Teaching

Summer semester 2024: Convex Analysis (Lecturer: Dr. Oleh Melnyk)

From January to March 2024, I am an assistant for the Course "Numerische Mathematik I" (Numerical Mathematics I) at TU Berlin.

I tutored the courses Linear Algebra for Engineers (in German, winter semester 2019/2020, Prof. Reinhard Nabben), Functional Analysis I (summer semester 2020, Prof. Dr. Nicole Mücke) and Differential equations I (in German, winter semester 2020/2021, Dr. Hans-Christian Kreusler).

During the school year 2022/23 I was a tutor at the Mathematische Schülergesellschaft "Leonhard Euler", where I, on a weekly basis, went through stimulating maths puzzles with interested seventh-graders.

Unofficial lecture notes & flashcards

Below you can find some lecture notes I wrote for courses I attended at TU Berlin in descending order by quality. I am satisfied with the top eight, read the rest at your own risk. If you find any errors or are perhaps an instructor discontented with the material shared here, please contact me at lastname at math.tu-berlin.de.

To help me study for the exams, I have created texed flashcards: [Approximation theory], [Functional Analysis II], [Topology I]. Beware that they might be incomplete and will probably contain errors. You can contact me at the above email adress if you want the corresponding .tex files.

To help me study for the exams, I have created texed flashcards from some of the above lecture notes: Approximation Theory, Differential equations II A, Differential equations II B, Functional Analysis II, Nonlinear optimisation, Differential equations III, Complex Analysis, Computeroriented Mathematics I & II, Topology. Beware that they might be incomplete and will probably contain errors. You can contact me at the above email adress if you want the corresponding .tex files.

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