RG Analysis and Partial Differential Equations
V5B1: Advanced Topics in Analysis and PDE - Harmonic Measure
Winter Semester 2020/2021
- Dr. Olli Saari
- Mon recordings in eCampus
- Wed 14-16 zoom
Week 1, starting 26 Oct.
Week 2, starting 02 Nov.
Week 3, starting 09 Nov.
Week 4, starting 16 Nov.
Week 5, starting 23 Nov.
Week 6, starting 30 Nov.
Week 7, starting 07 Dec.
Week 8, starting 14 Dec.
We have a Christmas break 21.12.2020 - 10.1.2021.
Week 9, starting 11 January. Quasiconformal mappings, read 5.0 to 5.3 (included) in the notes and watch the recordings for Monday 11 Jan in eCampus. The discussion session is on Wednesday as usual.
Week 10, starting 18 January. Quasidisks and chord arc domains, read 5.4 to 5.7 in the notes and watch the recordings for Monday 18 Jan in eCampus. The discussion session is on Wednesday as usual.
Week 11, starting 25 January. Kakutani's theorem, read 6.0 until 6.5 in the notes and watch the recordings for Monday 25 Jan in eCampus. The discussion session is on Wednesday as usual.
Week 12, starting 1 February. The rest of the notes. There are two more recordings in eCampus. No meeting on Wednesday, but please write me if there are questions.
eCampus page of the course.
ExamThe first exam period is 15.2.-17.2.2021. The second exam period is 29.3.-31.3.2021. This is an oral exam. You are supposed to master the material listed in the lecture notes. The tentative grading will be: to land between 5 and 3, you are supposed to know the notions and definitions; between 3 and 2, you are supposed to know something about their connections to each other, statements of theorems and such; and between 2 and 1 you are supposed to have solid understanding about the proofs (this does not mean details, but outlines at least).
In particular, prepare to explain the arguments leading to the following eight results: Frostman's theorem, Perron's method (Thm 3.3), Wiener's test, Fatou's theorem (Thm 4.12), Fatou's theorem for Hardy spaces (Thm 4.13), F. and M. Riesz theorem, Sobolev regularity of QS (Lemma 5.8), Kakutani's theorem.
TopicsThis course aims at covering the basic theory and fundamental ideas concerning the harmonic measure and its applications to geometric measure theory. The focus will be on the complex plane and on covering a wide array of ideas instead of specializing to a single aspect of the theory. We will discuss classical potential theory (harmonic and superharmonic functions, potentials, capacity, polarity, Dirichlet problem), its probabilistic counterpart (Brownian motion, hitting probability and harmonic measure) as well as connections to geometric measure theory (rectifiability).
PrerequisitesBasic real, complex and functional analysis.
- J. Doob, Classical potential theory and its probabilistic counterpart.
- J. B. Garnett and D. E. Marshall, Harmonic measure.
- T. Ransford, Potential theory in the complex plane.
Prof. Catharina Stroppel joined the North Rhine-Westphalia Academy for Sciences and Arts
Hirzebruch lecture by Rahul Pandharipande on Monday, May 15, 2023
Matthias Kreck elected corresponding member of the Göttingen Academy of Sciences and Humanities in Lower Saxony
Lucas Mann recevices the Hausdorff memorial award 2021/22
Bachelor Prize 2021/22 of the BMG awarded
M. Rapoport receives the Alexanderson Award of the AIM (joint with Jan Bruinier, Benjamin Howard, Stephen S. Kudla, and Tonghai Yang)
Prof. Daniel Huybrechts receives the Compositio Prize for the periode 2017-2019
Prof. Catharina Stroppel receives Gottfried Wilhelm Leibniz Prize 2023
Rajula Srivastava receives Association for Women in Mathematics Dissertation Prize
Prof. Ana Caraiani wins a New Horizons in Mathematics Prizes 2023
Pius XI Medal awarded to Professor Peter Scholze
Prof. Valentin Blomer und Prof. Georg Oberdieck erhalten ERC grants
Grants for Mathematics students from Ukraine
Prof. Jessica Fintzen is awarded a Whitehead Prize of the London Mathematical Society
Prof. Peter Scholze elected as Foreign Member of the Royal Society
Bonner Mathematik belegt bei Shanghai Ranking den 1. Platz in Deutschland und weltweit den 13. Platz
Prof. Daniel Huybrechts erhält gemeinsam mit Debarre, Macri und Voisin ERC Synergy Grant