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2024-09	I talked at the GF2024 and gave a invited talk at the Time Machine Factory conference, both in Turin, Italy.
2024-06-19	I gave the invited talk The Hawking theorem in Lipschitz regularity at Queen Mary University of London, U.K.
2024-05	I have been invited as a speaker to the EPS Conference on Gravitation: Unlocking Gravity Through Computation in Prague in December 2024, as well as to the BIRS-IMAG workshop Geometry, Analysis, and Physics in Lorentzian Signature in Granada in May 2025.
2024-04	The University of Vienna has announced to fund the Faculty's teaching project MaThX (Mathematikunterricht zwischen Theorie und Praxis; Teaching mathematics beteen theory and pratice), where I am a team memeber.
2024-04-05	Together with Ilse Fischer I gave a talk at the Austrian Mathematical Society's Teacher Training Day entiteled Neue Mathematik für die Schule (New Mtahs for the School).
2024-03-12	The Austrian Science Fund (FWF) has announced to fund the project A new geometry for Einstein's Theory of Relativity and Beyond in its new Emerging Fields excellency propgramme. The funding sum is an unprecedented 7 Mio. Eur. The project team consist of Michael Kunzinger, Raquel Perales, Chiara Rigoni, Clemens Sämann, and myself. See the press releases of FWF, the University of Vienna and the Faculty of Mathematics.
2023-09-22	Together with Ilse Fischer I gave an invited lecture at the Teacher's Day of the Austrian Mathematical Society.
2023-06	Clemens Sämann, graduate from our research group and my frequent co-author was arwarded the START-prize of the Austrian Science fund.
2023-04	I was invited to join the scientific board of GeLoMer the XI International Meeting on Lorentzian Geometry, to be held in Merida, Mexico, Jan. 29--Feb. 2, 2024.
2023-04-26	I gave a popular talk on my research at Vienna Planetarium.
2023-04-21	I gave an invited main lecture entiteled Impulsive gravitational waves (From particle motion to geometry) at the HASOP2023 conference in Novi Sad, Serbia.
2023-03-13--24	The ESI hosted our workshop Non-regular Spacetime Geometry, co-organised with Piotr Chrusciel, Melanie Graf, Ettore Minguzzi, and Mike Kunzinger.
2023-02-16	The Topical Collection "Singularity theorems, causality, and all that (SCRI21)", which I was co-editing appeared topday in General Relativity and Gravitation.
2022	The International Conference on Generalized Functions GF2022 organzied by our research group took place at our Faculty in Vienna. My student Benedict Schinnerl defended his Ph.D. thesis with best marks. My Ph.D. student Argam Ohanyan received a DOC-grant from the Austrian Academy of Science. He also successfully defended his master thesis in Pysics. I gave the invited main talk Raumzeitsingularitäten: Die Theoreme von Penrose und Hawking (Spacetime singularities: The theorems of Penrose and Hawking) at the ÖMG-Fortbildungstagung für Lehrhräfte (Meeting for continuing education of teachers of the Austrian Mathematical Society).
2022-02-25	Solidarity with Ukraine
2021	The project application Marginally outer trapped tubes of Walter Simon, where I am a co-applicant was selected for funding by FWF. I was co-organizing the small 2021 Null Distance Workshop with Cristina Sormani. The talks and slides of the online-meeting SCRI21: Singularity theorems, causality, and all that (A tribute to Roger Penrose) which was held June 14-18, 2021, and which I was co-organizing are now available from the conference website under https://sites.google.com/unifi.it/scri21/program. The talks of the 10th International Meeting on Lorentzian Geometry GeLoCor, where I was a member of the scientific commitee are now available on a Youtube channel. My FWF-funded research project Non-smooth spacetime geometry has started with two Ph.D. students employed, Matteo Calisti and Felix Rott.
2020	My project application Non-smooth spacetime geometry was selected for funding by FWF. My Ph.D. student Benedict Schinnerl was awarded a Uni:Docs scholarship.
2019	I gave a public lecture at Plaentarium Wien: Raumzeitsingularitäten. Jiri Podolsky, a theoretical physicist from Charles University at Prague (and a frequent collaborator of mine) has written a background story on his research for CQG+. It is entiteled Understanding exact space-times and also briefly describes our joint project(s).
2018	The 3rd edition of the textbook Einführung in das mathematische Arbeiten (German; Introduction into mathematical methodology) with Hermann Schichl has just appeared. For the product flyer click here. The service page of the book http://www.mat.univie.ac.at/~einfbuch has been updated. Also the series of explanatory videos which we have produced acompanying the 3rd edition is available freely from there.

Who I am and what I do

I am a mathematician/mathematical physicist and a researcher in mathematics education in the Analysis, Geometric Structures and Mathematical Physics section of the Faculty of Mathematics at the University of Vienna. I am the coordinator of the Austrian Science Fund's (FWF) Emerging Fields project A new geometry for Einstein's Theory of Relativity and Beyond My research interests include: mathematical physics/mathematical general relativity: spacetime singularities, cosmic censorship, exact radiative spacetimes, impulsivge gravitational waves mathematics education: professional knowledge of teachers, beliefs on teaching and learning mathematics (applied) mathematics: generalized functions, theory of PDE, kinetic theory, time frequency analysis & modulation spaces

Also I am member and treasurer of the IAGF (The International Association for Generalized Functions), a life-time member of ISAAC (The International Society for Analysis, its Applications and Computation), and a member of GDM (The German Society of Didactics of Mathematics).

My teaching includes a variety of courses in several areas of mathematics reaching from general first-year-courses to specialized courses and seminars in analysis, PDE and geometry, as well as major courses in the teacher’s training programme

I am a supervisor both in the

• Vienna Master Class Mathematical Physics (MCMP) which is run jointly by the Faculties of Mathematics and Physics of Vienna University, and
• Vienna School of Mathematics (VSM) which is a new joint enterprise of the University of Vienna and the Technical University Vienna.

I have co-authored the general introductory book Einführung in das Mathematische Arbeiten (German,Introduction into mathematical methodology) with Hermann Schichl. Together we are running a service web page accompanying the book. We have been awarded the UNIVIE Teaching Award 2013 of Vienna University and the Ars Docendi 2016, the Austrian National Award in University Teaching.

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