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Geometry and Dynamics of Discrete Actions
Cuernavaca, Mexico
June 16 - 20, 2026

The Satellite Conference of the 2026 ICM will take place at Cuernavaca, Mexico from June 16 to 20, 2026.

The study of discrete actions of groups and semi-groups plays a central role in geometry and dynamics. This originates in the pioneering work of H. Poincaré over a century ago, studying solutions of certain differential equations on the complex line. The study of discrete group-actions has played for decades a major role in complex geometry and holomorphic dynamics; and so, does iteration theory of rational maps and endomorphisms of complex spaces.

Scientific Committee:

  • Richard Canary (U. Michigan, USA)
  • Patricia Dominguez (BUAP, Mexico)
  • Nuria Fagella (U. Barcelona, Spain)
  • Fanny Kassel (IHES, France)
  • Linda Keen (CUNY, USA)
  • Mikhail Lyubich (Stony Brook, USA)
  • John Parker (U. Durham, UK)
  • Feliks Przytycki (Polish Academy of Sciences, Poland)
  • José Seade (UNAM, Mexico)

Organizing Committee:

  • Carlos Cabrera (UNAM, Mexico)
  • Patricia Dominguez (BUAP, Mexico)
  • José Seade (UNAM, Mexico)

2026 International Congress of Mathematicians
Pennsylvania Convention Center Philadelphia, PA
July 23 - 30, 2026

International Congress of Mathematicians (ICM) 2026 in Philadelphia, USA | 23–30 July 2026

The International Congress of Mathematicians will be held July 23-30, 2026 in Philadelphia, Pennsylvania. The congress coincides with the 250th anniversary of the signing of the Declaration of Independence and the 40th anniversary of when the last ICM was held in the U.S. The ICM offers a rare opportunity to meet some of the world's leading mathematicians and be inspired by the vast diversity of today’s mathematics.

Philadelphia provides the ICM with an excellent conference center conveniently located in the heart of the city. There is an abundance of food within walking distance, along with top quality hotels close to the conference center.

The city offers fascinating history, world class art and culture for your enjoyment, and we look forward to seeing many of you in Philadelphia!

Jalal Shatah, Chair
ICM 2026 Organizing Committee

Organization, Coordination & Outreach

 John Morgan, Columbia University
Tony Pantev, University of Pennsylvania
Jonathan Block, University of Pennsylvania
Bryna Kra, Northwestern University
Eric Friedlander, University of Southern California

For more information, see website: https://www.icm2026.org/event/ac193975-5d24-4628-8c30-ddb23de19a8b/home

Dynamical Renormalization and MLC: January 4 – March 5, 2027
Simons Center for Geometry and Physics
January 4 – March 5, 2027

Since its introduction 50 years ago, the concept of Dynamical Renormalization (originally motivated by Renormalization in Physics) has become a fundamental tool in Dynamical Systems. The Program highlights recent advances of this theme, with a particular focus on the MLC Conjecture (the local connectivity of the Mandelbrot set), a central open problem in contemporary Holomorphic Dynamics. Related and parallel topics include circle and rational higher-degree Dynamics, 2D Dynamics (real and complex, dissipative and conservative), the spectral theory of the Schrödinger operator with almost periodic potential.

This event will also host a workshop: Half a century of Dynamical Renormalization: February 8 – 12, 2027.

Organized by:

Dima Dudko (SBU)
Edson de Faria (University of Sao Paulo)
Kostya Khanin (University of Toronto)
Misha Lyubich (SBU)
Marco Martens (SBU)

Half a century of Dynamical Renormalization: February 8 – 12, 2027
Simons Center for Geometry and Physics, Stony Brook
February 8 – 12, 2027

The goal of the Workshop is to bring together researchers working on various aspects of Renormalization in Dynamical Systems.

Fifty years ago, the Renormalization was introduced in Dynamics in the works of Feigenbaum, Coullet and Tresser. Today, the renormalization ideas have penetrated deeply into many areas of Mathematics and Physics, though an explicit relation between various areas often remains elusive. In the case of the Mandelbrot set, the MLC Conjecture has been essentially reduced to the justification of renormalization control for all quadratic polynomials.

Organized by:

Dima Dudko (SBU)
Edson de Faria (University of Sao Paulo)
Kostya Khanin (University of Toronto)
Misha Lyubich (SBU)
Marco Martens (SBU)