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Interactions between fractal geometry, harmonic analysis, and dynamical systems

September 2 - December 11, 2026

The purpose of the semester is to unite experts working at the interfaces between fractal geometry, harmonic analysis, and dynamical systems. These areas have become increasingly intertwined in the 2000s. Some of the most striking recent progress in each of fields has resulted from surprising input from the two others. The three main aims of the semester are to discover further connections between the fields, to facilitate experts in one field to rapidly gain a deeper understanding of the other two, and to provide junior mathematicians a unique opportunity gain experience in all three areas, early-on in their careers.

Examples of specific topics covered by the semester include (i) problems in continuum incidence geometry related to Kakeya sets, distance sets, and projections, sum-product theory, and finding patterns in fractal sets, (ii) connections between these problems with Fourier restriction and decoupling theory, fractal uncertainty principles in quantum chaos, and Fourier decay problems for dynamically defined fractal measures, (iii) the theory of effective equidistribution of random walks on groups.

The scientific programme of the semester will contain two week-long workshops, and several weekly seminars.

Workshop 1: September 21 — September 25
Workshop 2: November 16 — November 20

RECORDED SEMINARS:

Seminars Scroll to the next upcoming seminar

Recordings

Participants

Name University Country Arrival and Departure
Amir
Algom
University: University of Haifa at Oranim Country: Israel Arrival and Departure: Sep 2 - Nov 28
Michael
Björklund
University: Chalmers University of Technology Country: Sweden Arrival and Departure: Sep 2 - Dec 11
Emmanuel
Breuillard
University: University of Oxford Country: United Kingdom Arrival and Departure: Sep 28 - Dec 11
Alex
Cohen
University: Courant Institute Country: United States Arrival and Departure: Nov 8 - Dec 11
Damian
Dabrowski
University: IMPAN, Warsaw Country: Poland Arrival and Departure: Sep 7 - Oct 2
Nicolas
de Saxcé
University: Université Paris-Nord Country: France Arrival and Departure: Sep 2 - Dec 11
Semyon
Dyatlov
University: MIT Country: USA Arrival and Departure: Sep 21 - Sep 25
Manfred
Einsiedler
University: ETH Zürich Country: Switzerland Arrival and Departure: Sep 1 - Sep 12
De-Jun
Feng
University: Chinese University of Hong Kong Country: Hong Kong, China Arrival and Departure: Nov 28 - Dec 11
Jonathan
Fraser
University: University of St Andrews Country: United Kingdom Arrival and Departure: Sep 20 - Nov 21
Katrin
Fässler
University: University of Jyväskylä Country: Finland Arrival and Departure: Sep 2 - Oct 18
Alexander
Gorodnik
University: University of Zurich Country: Switzerland Arrival and Departure: Sep 9 - Sep 20
Shaoming
Guo
University: Chern Institute of Mathematics, Nankai University Country: China Arrival and Departure: Sep 1 - Dec 12
Weikun
He
University: Academy of Mathematics and System Science, Chinese Academy of Sciences Country: China Arrival and Departure: Sep 2 - Oct 7
Alex
Iosevich
University: University of Rochester Country: United States Arrival and Departure: Sep 1 - Oct 1
Osama
Khalil
University: [object Object] Country: United States Arrival and Departure: Nov 15 - Nov 28
Henna
Koivusalo
University: University of Bristol Country: UK Arrival and Departure: Oct 24 - Dec 11
Jialun
Li
University: CNRS and Ecole Polytechnique Country: France Arrival and Departure: Sep 2 - Dec 11
Elon
Lindenstrauss
University: Institute for Advanced Study Country: USA Arrival and Departure: Nov 15 - Nov 28
Amir
Mohammadi
University: UCSD Country: USA Arrival and Departure: Oct 1 - Oct 20
Joel
Moreira
University: Warwick University Country: UK Arrival and Departure: Sep 14 - Sep 25
Tuomas
Orponen
University: University of Jyväskylä Country: Finland Arrival and Departure: Sep 1 - Dec 11
Malabika
Pramanik
University: University of British Columbia Country: Canada Arrival and Departure: Sep 2 - Dec 11
Ariel
Rapaport
University: Technion Country: Israel Arrival and Departure: Sep 17 - Sep 29
Tuomas
Sahlsten
University: University of Helsinki Country: Finland Arrival and Departure: Sep 2 - Dec 12
Pablo
Shmerkin
University: University of British Columbia Country: Canada Arrival and Departure: Sep 2 - Dec 11
Donald
Stull
University: University of Chicago Country: USA Arrival and Departure: Oct 1 - Oct 15
Josh
Zahl
University: University of British Columbia Country: China Arrival and Departure: Sep 2 - Dec 11
Ruixiang
Zhang
University: University of Berkeley Country: USA Arrival and Departure: Sep 21 - Nov 20