Groups and group theory

A non-sofic group

The Discovery of Monster Group | Graduate Algebra I Presentation | Ong Jing Poh 260710

The Classification of Groups order pq | Graduate Algebra I Presentation | Lee Chuen Jac 260710

The Classification of Finite Abelian Groups | Graduate Algebra I Presentation | Lee Pei Yi 260710

On Maschke's Theorem | Graduate Algebra I Presentation | Teoh Yu Hang 260710

The Highest Weight Theorem for SL3(C) | Liu Xiaoyue 2026.06.27

Group Extension | Graduate Algebra I Lecture 9 | Nge Kie Seng 260506

Group Action | Graduate Algebra I Lecture 6 | Teoh Yu Hang 260424

Quotient Groups | Graduate Algebra I Lecture 5 | Lee Chuen Jac 260421

The Category of Groups | Graduate Algebra I Lecture 3 | Ong Jing Poh 260414

25 | SU(2) as double cover of SO(3), some consequences

24 | M as G/H, factor-group, homomorphism theorem

23 | Regular representation, left cosets, G/H

21 | Action of a group on a manifold, orbits, stabilizers

10 | Irreducible representation, intertwining operator, Schur's lemma

09 | Derived homomorphism, representation of a group and Lie algebra

08 | 1-parameter subgroups (and examples), exponential mapping

04 | Affine , Euclidean and Poincaré groups as matrix groups

03 | Metric and cometric, structured set, standard matrix groups

Daniel Freed: Lie Group Quiche (November 20, 2025)

Prof. Terence Tao | On Gromov's theorem on groups of polynominal growth and related topics

Prof. Jean-Pierre Serre | The quaquaversal group

Prof. Emmanuel Breuillard | Approximate groups: an introduction

Prof. Nansen Petrosyan | Group theoretic Dehn fillings and their L^2-Betti numbers

Dr. Alexis Marchand | Spectral gaps for stable commutator length via angle structures

Dr. Mark Pengitore | Linearity criteria for automorphism groups of hyperbolic groups

Prof. Narutaka Ozawa | Kazhdan's property (T) for EL_n(R)

Prof. Dawid Kielak | Computational aspects of cohomology of SL(n,Z)

Dr. Seung-Yeon Ryoo | Group embeddings and coarse differentiation

"Rigidité des représentations linéaires des groupes fondamentaux en dimension 3." par Julien Marché

Rigidity of linear representations of fundamental groups in dimension 3. by Julien Marché

Groups and Group Actions: Representations of groups by permutations - 1st Year Student Lecture

"Groupes, dynamique et logique." par Laurent Bartholdi

"Groups, Dynamics and Logic" by Laurent Bartholdi

Лекция 4 | Теория групп | Вася Ионин

Лекция 3 | Теория групп | Вася Ионин

Groups and Group Actions: Group homomorphisms - Oxford Mathematics 1st Year Student Lecture

Лекция 1 | Теория групп | Вася Ионин

Exploration & Epiphany | Guest video by Paul Dancstep

Representations of GL2

Vinberg lecture part 2. The reflection group of II25,1

Vinberg lecture part 1.Vinberg's algorithm