/fɞlkʰœ ʃluɘ/

Laboratoire Jacques-Louis LionsSorbonne Université

schlue(at)ljll.math.upmc.fr 16-26 319

I have moved to the University of Melbourne.

All updates are now posted to:
blogs.unimelb.edu.au/volker-schlue/

At the Sorbonne, I work with Jérémie Szeftel.

- One of my favorite conferences in mathematical general relativity was held in tropical climate at the new Tsinghua Sanya International Mathematics Forum in Sanya, Hainan, China, form January 5-9, 2016.
It was organized by Lydia Bieri, Jim Isenberg, and Shing-Tung Yau, and attended by many people: [Group photo]. Notably, Demetri Christodoulou gave an inspiring talk about the formulation of the two-body problem in general relativity, similar to his lecture at the Institut Henri Poincaré in Paris. Moreover Abhay Ashtekar gave a fascinating talk on status of the theory of gravitational radiation with positive cosmological constant.

- A Celebration of the 100th Anniversary was held in Paris as part of the semester program on mathematical general relativity.
- A large conference on General Relativity & Gravitation: A Centennial Perspective was held at Penn State in June 2015.
It brought together a broad spectrum of both physicists and mathematicians; most of the plenary sessions we recorded.

- The Fields Institute in Toronto hosted a Focus Program for the Centenary of Einstein's Equations of General Relativity in May & June, 2015.
The six weeks (!) long program offered lectures and discussions in essentially all areas of mathematical general relativity, beginning with a workshop on

*constraint equations*(with very instructive survey talks by Mu-Tao Wang and Sergio Dain), followed by two weeks on perturbation methods (with interesting talks on the*post-Newtonian approximation*by Luc Blanchet). The program of the conference on black holes held inspiring talks by Shing-Tung Yau on the history of mathematical relativity, Tsvi Piran on observational evidence for black holes, and Mihalis Dafermos on the stability of black holes; among many others, see in particular the lectures of Andras Vasy, and Rick Schoen. The remaining three weeks were very actively devoted to the*black hole stability problem*(also with both positive and negative cosmological constant, as discussed e.g. by Semyon Dyatlov and Claude Warnick), the nature of*singularities in general relativity*(with interesting talks by Jan Sbierski, Greg Fournodavlos, Jonathan Luk, and Jim Isenberg), and finally*non-linear wave equations*more generally. - In January I participated in the Mathematical Problems in General Relativity workshop at the Simons Center for Geometry and Physics in Stony Brook.
Many young people attended, among them Sung-Jin Oh and Cecile Huneau who gave great talks.

- In September 2014 I traveled to the Heidelberg Laureate Forum and had a chance to see Michael Atiyah speak about beauty.
I thought the lectures by Yoccoz, and and Werner were inspiring.

- In August 2014 I visited Seoul, South Korea, where the International Congress of Mathematicians 2014 was held.
It was a conference of enormously broad scope; I thought the lectures by Etienne Ghys, John Milnor, and Manjul Bhargava were fantastic, but really I enjoyed most of the lectures.

(Photo with Jonathan Luk and Hans Ringstrom.) - The 17th Riviere-Fabes Symposium which was held at the University of Minnesota in April 2014 hosted lectures on analysis & PDEs by Alice Chang, Alex Ionescu, Frank Merle, and Maciej Zworski. (Group photo.)
- In January 2014 I attended a conference in honor of Yvonne Choquet Bruhat's 90th birthday.
She set the stage for the evolution problem in general relativity in 1952, and remains active more than 60 years later.

(Photo of Mme Choquet at the conference.) - I was very happy to be at MSRI in the fall semester of 2013 for the program on mathematical general relativity.
The lectures given in the Initial Data and Evolution Problems workshop were recorded, and provide a great cross-section of current research in general relativity.

- Oberwolfach workshop "Mathematical Aspects of General Relativity" 2012.
The Oberwolfach Report 37/2012 is a great overview of current research activity in general relativity. It is a collection of extended abstracts of the talks given at the There are also some notes taken by Willie Wong.

- Clay Mathematics Summer School 2008.
The lecture notes of the course by Mihalis Dafermos and Igor Rodnianski are a seminal introduction to

*the wave equation on black hole spacetimes*.