Simple Groups - Abstract Algebra
Simple groups are the building blocks of finite groups. After decades of hard work, mathematicians have finally classified all finite simple groups. Today we talk about why simple groups are so important, and then cover the four main classes of simple groups: cyclic groups of prime order
From playlist Abstract Algebra
This lecture is part of an online math course on group theory. We review free abelian groups, then construct free (non-abelian) groups, and show that they are given by the set of reduced words, and as a bonus find that they are residually finite.
From playlist Group theory
Now that we have defined and understand quotient groups, we need to look at product groups. In this video I define the product of two groups as well as the group operation, proving that it is indeed a group.
From playlist Abstract algebra
Now that we know what a quotient group is, let's take a look at an example to cement our understanding of the concepts involved.
From playlist Abstract algebra
Group Definition (expanded) - Abstract Algebra
The group is the most fundamental object you will study in abstract algebra. Groups generalize a wide variety of mathematical sets: the integers, symmetries of shapes, modular arithmetic, NxM matrices, and much more. After learning about groups in detail, you will then be ready to contin
From playlist Abstract Algebra
Bachir Bekka - On characters of infinite groups
Let G be a countable infinite group. Unless G is virtually abelian, a description of the unitary dual of G (that is, the equivalence classes of irreducible unitary representations of G) is hopeless, as a consequence of theorems of Glimm and Thoma. A sensible substitute for the unitary dual
From playlist Groupes, géométrie et analyse : conférence en l'honneur des 60 ans d'Alain Valette
Definition of a group Lesson 24
In this video we take our first look at the definition of a group. It is basically a set of elements and the operation defined on them. If this set of elements and the operation defined on them obey the properties of closure and associativity, and if one of the elements is the identity el
From playlist Abstract algebra
What is a Group? | Abstract Algebra
Welcome to group theory! In today's lesson we'll be going over the definition of a group. We'll see the four group axioms in action with some examples, and some non-examples as well which violate the axioms and are thus not groups. In a fundamental way, groups are structures built from s
From playlist Abstract Algebra
Visual Group Theory, Lecture 3.5: Quotient groups
Visual Group Theory, Lecture 3.5: Quotient groups Like how a direct product can be thought of as a way to "multiply" two groups, a quotient is a way to "divide" a group by one of its subgroups. We start by defining this in terms of collapsing Cayley diagrams, until we get a conjecture abo
From playlist Visual Group Theory
The orbit method for (certain) pro-p groups (Lecture 1) by Uri Onn
PROGRAM GROUP ALGEBRAS, REPRESENTATIONS AND COMPUTATION ORGANIZERS: Gurmeet Kaur Bakshi, Manoj Kumar and Pooja Singla DATE: 14 October 2019 to 23 October 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Determining explicit algebraic structures of semisimple group algebras is a fund
From playlist Group Algebras, Representations And Computation
Sven Raum: Operator algebras of locally compact groups acting on trees
Sven Raum: Operator algebras of locally compact groups acting on trees Abstract: I will present my work on C*-simplicity of locally compact groups, focusing on its relevance for studying locally compact groups acting on trees. First, I will summarising results that I could obtain in 2015
From playlist HIM Lectures: Trimester Program "Von Neumann Algebras"
Retrosynthesis 9 - Organic Chemistry
Retrosynthetic analysis of a spirocyclic unsaturated ketone to showcase 1,6-diX disconnections and the pinacol rearrangement as synthesis strategies in organic chemistry. More retrosynthesis videos here: https://www.youtube.com/watch?v=lD02HC4h6yw&list=PLavaRHHaRimVhyZD79H8g08cfhxrZMcB1 #
From playlist Retrosynthesis
CTNT 2020 - Infinite Galois Theory (by Keith Conrad) - Lecture 3
The Connecticut Summer School in Number Theory (CTNT) is a summer school in number theory for advanced undergraduate and beginning graduate students, to be followed by a research conference. For more information and resources please visit: https://ctnt-summer.math.uconn.edu/
From playlist CTNT 2020 - Infinite Galois Theory (by Keith Conrad)
Total Synthesis of Dysifragilone A, B and Dysidavarone C
An organic chemistry minilecture on the Total Synthesis of Dysifragilone A, B and Dysidavarone C by Yang-Ming Li, Yu-Tong Sun, Bi-Yuan Li, Hong-Bo Qin* Highlights include a reductive Heck coupling, palladium-catalysed α-arylation reaction and a dissolving metal enolate addition. NB: Reup
From playlist Total Synthesis
Heterocyclic Chemistry @Scripps: Lecture 7
Heterocyclic chemistry is a class taught at Scripps for over a decade now. The class primarily uses “The Portable Chemist’s Consultant” as a text book. This class is also available on iTunes U. Course materials can be found there and also on the Baran Lab Twitter feed.
From playlist Heterocyclic Chemistry 2019
Synthesis Workshop: Communication in Organic Synthesis (Episode 33)
In this Culture of Chemistry episode, which was recorded as a live talk with chemistry students from Towson University, we explore graphics, language, and organization in organic synthesis communications.
From playlist Culture of Chemistry
CTNT 2022 - An Introduction to Galois Representations (Lecture 2) - by Alvaro Lozano-Robledo
This video is part of a mini-course on "An Introduction to Galois Representations" that was taught during CTNT 2022, the Connecticut Summer School and Conference in Number Theory. More about CTNT: https://ctnt-summer.math.uconn.edu/
From playlist CTNT 2022 - An Introduction to Galois Representations (by Alvaro Lozano-Robledo)
Group Actions and Power Maps by C. R. E. Raja
PROGRAM : ERGODIC THEORY AND DYNAMICAL SYSTEMS (HYBRID) ORGANIZERS : C. S. Aravinda (TIFR-CAM, Bengaluru), Anish Ghosh (TIFR, Mumbai) and Riddhi Shah (JNU, New Delhi) DATE : 05 December 2022 to 16 December 2022 VENUE : Ramanujan Lecture Hall and Online The programme will have an emphasis
From playlist Ergodic Theory and Dynamical Systems 2022
Retrosynthesis 10 - Organic Chemistry
Retrosynthetic analysis of a substituted caprolactam, highlighting the Beckmann rearrangement, Michael addition, and protecting group chemistry using the THP group. #chemistry #organicchemistry #orgo #synthesis #ochem #retrosynthesis #stem #education #science The 7-membered ring in this
From playlist Retrosynthesis
Chapter 5: Quotient groups | Essence of Group Theory
Quotient groups is a very important concept in group theory, because it has paramount importance in group homomorphisms (connection with the isomorphism theorem(s)). With this video series, abstract algebra needs not be abstract - one can easily develop intuitions for group theory! In fac
From playlist Essence of Group Theory