Grigorchuk group

The BuShou of HanZi :囗

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From playlist The BuShou of HanZi

Союз - Аполлон / Space: Apollo-Soyuz Leader Boris Petrov

Control engineer Boris N. Petrov was the leader on the Russian side of the Apollo-Soyuz Program 1975. His work included solving fuel consumption problems for rockets and a myriad of other technical issues. The Edison Tech Center interviewed Vladislav Rutkovsky - living pioneer in Russian

From playlist Russian Engineering

The BuShou of HanZi :禾

A brief description of the BuShou of 禾.

From playlist The BuShou of HanZi

How Did Russian Oligarchs Get So Rich?

Subscribe to The Daily Upside! (Free Business & Finance Newsletter): https://bit.ly/38LgdGN Russian Oligarchs have become synonymous with superyachts, luxury mansions and the shady political maneuvering of post-Soviet Russia. Since the Russian invasion of Ukraine, Russian billionaires lik

From playlist Long Videos

The BuShou of HanZi :宀

A brief description of the BuShou of 宀.

From playlist The BuShou of HanZi

The BuShou of HanZi :耳

A brief description of the BuShou of 耳.

From playlist The BuShou of HanZi

Rostislav Grigorchuk - Invariant random subgroups of groups of the lamplighter type

Rostislav Grigorchuk (Texas A&M University, USA) After a short introduction to invariant random subgroups (IRS) I will present some results obtained in collaboration with L.Bowen, R.Kravchenko and T.Nagnibeda and with M.Benli and T.Nagnibeda. First I will talk about IRS of groups

From playlist T1-2014 : Random walks and asymptopic geometry of groups.

The BuShou of HanZi :目

A brief description of the BuShou of 目.

From playlist The BuShou of HanZi

Anna Erschler - 2/2 Growth and Isoperimetric Inequalities in Groups

From playlist Summer School 2019: Aspects of Geometric Group Theory

Alexander Olshanskii - Relative growth of subgroups in finitely generated groups

Alexander Olshanskii (Vanderbilt University, USA and Moscow State University, Russia) Let $H$ be a subgroup of a finitely generated group $G$. The (relative) growth function $f(n)$ of $H$ with respect to a finite set $A$ generating $G$, is given by the formula $f(n) = card \{g\in H;

From playlist T1-2014 : Random walks and asymptopic geometry of groups.

Volodymyr Zelenskiy vs Vladimir Putin | Short Essay

Essay on how different Ukrainian president Volodymyr Zelenskiy from Russian president Vladimir Putin. Support independent research and analysis by joining my Patreon page: https://www.patreon.com/thehatedone Russia’s invasion in Ukraine is a self-centered ambition of an authoritarian lea

From playlist Analyses

Anna Erschler: Arboreal structures, Poisson boundary and growth of Groups

The lecture was held within the framework of the Hausdorff Trimester Program: Logic and Algorithms in Group Theory. Abstract: A group is said to be ICC if all non-identity elements have infinitely many conjugates. In a joint work with Vadim Kaimanovich, given an ICC group, we construct a

From playlist HIM Lectures: Trimester Program "Logic and Algorithms in Group Theory"

Rostislav Grigorchuk: Random subgroups, totally non free actions and factor representations

I will present results of three studies, performed in collaboration with M.Benli, L.Bowen, A.Dudko, R.Kravchenko and T.Nagnibeda, concerning the invariant and characteristic random subgroups in Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathemat

From playlist Dynamical Systems and Ordinary Differential Equations

Nekrashevych: Constructing simple groups using dynamical systems

We will show how minimal dynamical systems and etale groupoids can be used to construct finitely generated simple groups with prescribed properties. For example, one can show that there are uncountably many different growth types (in particular quasi-isometry classes) among finitely genera

From playlist Topology

Türkiye Otoban, köprü geçişleri, Üçüncü Köprü Geçiş 🇹🇷

From playlist Travels around the World

Crash course in Riemanian geometry (Lecture - 01) by Harish Seshadri

Geometry, Groups and Dynamics (GGD) - 2017 DATE: 06 November 2017 to 24 November 2017 VENUE: Ramanujan Lecture Hall, ICTS, Bengaluru The program focuses on geometry, dynamical systems and group actions. Topics are chosen to cover the modern aspects of these areas in which research has b

From playlist Geometry, Groups and Dynamics (GGD) - 2017

Hyperbolic geometry, the modular group and Diophantine (Lecture - 02) by Shrikrishna G Dani

Geometry, Groups and Dynamics (GGD) - 2017 DATE: 06 November 2017 to 24 November 2017 VENUE: Ramanujan Lecture Hall, ICTS, Bengaluru The program focuses on geometry, dynamical systems and group actions. Topics are chosen to cover the modern aspects of these areas in which research has b

From playlist Geometry, Groups and Dynamics (GGD) - 2017

How Small Can a Group or a Graph be to Admit a Non-Trivial Poisson Boundary? - Anna Erschler

Group Theory/Dynamics Talk Topic: How Small Can a Group or a Graph be to Admit a Non-Trivial Poisson Boundary? Speaker: Anna Erschler Affiliation: École normale supérieure Date: December 9, 2022 We review results about random walks on groups, discussing results and conjectures relating c

From playlist Mathematics

Introduction to hyperbolic groups (Lecture – 01) by Mahan Mj

Geometry, Groups and Dynamics (GGD) - 2017 DATE: 06 November 2017 to 24 November 2017 VENUE: Ramanujan Lecture Hall, ICTS, Bengaluru The program focuses on geometry, dynamical systems and group actions. Topics are chosen to cover the modern aspects of these areas in which research has b

From playlist Geometry, Groups and Dynamics (GGD) - 2017

Azerbaijan

There is more than just oil in Azerbaijan. This is a country with a rich and ancient history. It was the first democratic country in the Islamic world. Women's suffrage in Azerbaijan preceded the United Kingdom and the United States. Azerbaijani scientists contributed to the world developm

From playlist Culture