In mathematics, a ray class field is an abelian extension of a global field associated with a ray class group of ideal classes or idele classes. Every finite abelian extension of a number field is contained in one of its ray class fields. The term "ray class group" is a translation of the German term "Strahlklassengruppe". Here "Strahl" is the German for a ray, and often means the positive real line, which appears in the positivity conditions defining ray class groups. , p.6) uses "Strahl" to mean a certain group of ideals defined using positivity conditions, and uses "Strahlklasse" to mean a coset of this group. There are two slightly different notions of what a ray class field is, as authors differ in how the infinite primes are treated. (Wikipedia).
Quantum field theory, Lecture 2
This winter semester (2016-2017) I am giving a course on quantum field theory. This course is intended for theorists with familiarity with advanced quantum mechanics and statistical physics. The main objective is introduce the building blocks of quantum electrodynamics. Here in Lecture 2
From playlist Quantum Field Theory
Quantum Field Theory II Lecture 1
This is a course offered by Ashoke Sen, called Quantum field theory II.
From playlist Quantum Field Theory
Quantum Field Theory 3a - Photons I
In this video we apply the theory we developed in videos 1 & 2, along with some ideas from electromagnetic theory, to develop a rigorous theory of photons.
From playlist Quantum Field Theory
The model of the atom - Bounded by the light
Reworking of the Weekend's blinded by the light
From playlist Level 2 NCEA Physics
Particle Physics 1: Introduction
Part 1 of a series: covering introduction to Quantum Field Theory, creation and annihilation operators, fields and particles.
From playlist Particle Physics
Astronomy - Ch. 6: Telescopes (11 of 25) The Newtonian Reflecting Telescope
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the Newtonian reflecting telescopes.
From playlist ASTRONOMY 6 TELESCOPES
1A Introduction to this course on limits
A course on limits in calculus for healthcare and life sciences students.
From playlist Life Science Math: Limits in calculus
CTNT 2020 - Heuristics for narrow class groups - Benjamin Breen
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 - Conference Videos
Physics Sample Paper Solutions -2 || CBSE Class 10 Science || Sprint 10 || Dr. Akash Sir || IL
Sample paper solutions refer to the step-by-step explanation of the answers to a set of sample Physics problems. These solutions can be used as a reference by students to understand the method of solving similar problems and to check their own answers for accuracy. The solutions will be pr
From playlist Sprint 10 || CBSE Class 10 Sample Paper Solutions || Infinity Learn
Lec 1 | MIT 2.71 Optics, Spring 2009
Lecture 1: Course organization; introduction to optics Instructor: George Barbastathis, Colin Sheppard, Se Baek Oh View the complete course: http://ocw.mit.edu/2-71S09 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 2.71 Optics, Spring 2009
Galaxy Clusters (Lecture 1) by Stefano Borgani
Program Cosmology - The Next Decade ORGANIZERS : Rishi Khatri, Subha Majumdar and Aseem Paranjape DATE : 03 January 2019 to 25 January 2019 VENUE : Ramanujan Lecture Hall, ICTS Bangalore The great observational progress in cosmology has revealed some very intriguing puzzles, the most i
From playlist Cosmology - The Next Decade
Andy Magid, University of Oklahoma
Andy Magid, University of Oklahoma Differential Brauer Monoids
From playlist Online Workshop in Memory of Ray Hoobler - April 30, 2020
Summer App Space: Lecture 7 - Dr. C. Corbett Moran – 7/7/17
The Summer App Space is a summer program for LA students and teachers to learn programming while getting paid to do fun space-related projects. Learn more: http://summerappspace.com
From playlist Summer App Space - 2017
Physics Sample Paper Solutions-3 || CBSE Class 10 Science || Sprint 10 || Dr. Akash Sir || IL
Sample paper solutions refer to the step-by-step explanation of the answers to a set of sample Physics problems. These solutions can be used as a reference by students to understand the method of solving similar problems and to check their own answers for accuracy. The solutions will be pr
From playlist Sprint 10 || CBSE Class 10 Sample Paper Solutions || Infinity Learn
1. Introduction to the Class | MIT 8.224 Exploring Black Holes
Lecturer: Edmund Bertschinger View the complete course at: http://ocw.mit.edu/8-224S03 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT Exploring Black Holes: General Relativity & Astrophysics
Physics & Astrophysics of Gamma-Ray Bursts: Part 1 by Frédéric Daigne
PROGRAM : GRAVITATIONAL WAVE ASTROPHYSICS (ONLINE) ORGANIZERS : Parameswaran Ajith, K. G. Arun, Sukanta Bose, Bala R. Iyer, Resmi Lekshmi and B Sathyaprakash DATE : 18 May 2020 to 22 May 2020 VENUE : ONLINE Meeting Due to the ongoing COVID-19 pandemic, the original program has been canc
From playlist Gravitational Wave Astrophysics (Online) 2020
Kähler–Einstein metrics on Fano manifolds: variational and algebro-geometric – S. Boucksom – ICM2018
Algebraic and Complex Geometry | Analysis and Operator Algebras Invited Lecture 4.1 | 8.1 Kähler–Einstein metrics on Fano manifolds: variational and algebro-geometric aspects Sébastien Boucksom Abstract: I will describe a variational approach to the existence of Kähler–Einstein metrics o
From playlist Algebraic & Complex Geometry