In mathematics, in the field of group theory, a subgroup of a group is said to have the Congruence Extension Property or to be a CEP subgroup if every congruence on the subgroup lifts to a congruence of the whole group. Equivalently, every normal subgroup of the subgroup arises as the intersection with the subgroup of a normal subgroup of the whole group. In symbols, a subgroup is a CEP subgroup in a group if every normal subgroup of can be realized as where is normal in . The following facts are known about CEP subgroups: * Every retract has the CEP. * Every transitively normal subgroup has the CEP. (Wikipedia).
A tour of CERN and its research facilities. Find out more about CERN: http://home.cern/ Produced by: CERN Video Productions Director: CERN Video Productions You can follow us on: cern.ch youtube.com/cerntv facebook.com/cern twitter.com/cern/ linkedin.com/company/cern instagram.com/cern
From playlist CERN - the Laboratory
A clip on working at CERN You can find more CERN Jobs videos at http://jobs.web.cern.ch/content/videos En français: https://www.youtube.com/watch?v=59TGuLcLLSI Auf Deutsch: https://www.youtube.com/watch?v=7ukiNPOOy-k
From playlist CERN Jobs
This video briefly introduces CERN - what it is, a brief history, and what occurs there, and how it impacts' today's society. Like what I do? Support by buying me a coffee - www.buymeacoffee.com/physicshigh For on going support, support me at Patreon: www.patreon.com/physicshigh LIKE an
From playlist New here? A selection of what I do
Visite du CERN et ses installations. Pour en savoir plus sur le CERN : http://home.cern/fr Produit par : CERN Video Productions Directeur : CERN Video Productions Vous pouvez nous suivre sur : cern.ch youtube.com/cerntv facebook.com/cern twitter.com/cern/ linkedin.com/company/cern inst
From playlist CERN - the Laboratory
CERN Professions: Electricity at CERN, what a network!
This video is published by our recruitment dept. If you are an electrical engineer, CERN has openings for you.
From playlist CERN Jobs
CERN looks back at the highlights of 2017
The past year has seen exciting developments across the CERN complex, with new installations and experiments, and LHC performance exceeding expectations. In this short video, CERN looks back on the highlights and headlines that have made 2017. You can read more about individual news item
From playlist CERN - the Laboratory
From playlist CERN Jobs
Sub Chasers of the Civil Air Patrol
The Civil Air patrol was created on the verge of the Second World War, and provided a valuable contribution to the war effort. The History Guy remembers the submarine chasers of the United States Civil Air Patrol in this "History Guy Hat Collection" video. An original version of this epis
From playlist US History
Lec 17 | MIT Finite Element Procedures for Solids and Structures, Nonlinear Analysis
Lecture 17: Modeling of elasto-plastic and creep response I Instructor: Klaus-Jürgen Bathe View the complete course: http://ocw.mit.edu/RES2-002S10 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT Nonlinear Finite Element Analysis
The past seven months of combat in Ukraine have demonstrated that the reign of artillery on the battlefield is far from over. When the West and NATO countries recognized that the war of Russian aggression in Ukraine has largely devolved into dueling artillery exchanges, they decided to
From playlist Military Mechanics
Minicomputer Part 5: Building an Arduino ROM Reader
In this episode we take our first step towards ensuring that we have a backup plan if all the magic smoke comes out on first power up – we rip the data off the ROMs! It’s not as easy as it sounds though as these ROMs are pretty old and weird chips that aren’t supported by a lot of ROM prog
From playlist Centurion Minicomputer
Europe in turmoil: Lessons from the History of European Integration – Kiran Klaus Patel
„Europe in turmoil: Lessons from the History of European Integration“: Historiker Kiran Klaus Patel von der Universität Maastricht machte auf der 70. Jahresversammlung der MPG die europäische Integration auch jenseits der Forschungspolitik nachvollziehbar.
From playlist Videos in English
From student to scientist: opportunities for working at CERN
Talk given by Laura Saulnier of CERN and Eva Tolosa of the Institut Pluridisciplinaire Hubert Curien in France, at the CERN Opendays 2013. To view this talk alongside the slides shown see http://cds.cern.ch/record/1604800. Watch more Opendays videos via this playlist: http://www.youtube.co
From playlist 2013: Talks from CERN Opendays
The Forgotten Ally - Portugal in WW1 I THE GREAT WAR Special
Portugal's participation in the First World War 1, especially the service of the Portuguese Expeditionary Corps on the Western Front, is often forgotten. And even when the troops were still fighting, the political situation back home had changed so much that the soldiers were largely forgo
From playlist SPECIAL EPISODES - The Great War
On cyclic Higgs bundles (Remote Talk) by Qiongling Li
Surface Group Representations and Geometric Structures DATE: 27 November 2017 to 30 November 2017 VENUE:Ramanujan Lecture Hall, ICTS Bangalore The focus of this discussion meeting will be geometric aspects of the representation spaces of surface groups into semi-simple Lie groups. Classi
From playlist Surface Group Representations and Geometric Structures
A converse theorem of Gross-Zagier and Kolyvagin: CM case - Ye Tian
Joint IAS/PU Number Theory Topic: A converse theorem of Gross-Zagier and Kolyvagin: CM case Speaker:Ye Tian Affiliation: Chinese Academy of Sciences Date: October 26, 2017 For more videos, please visit http://video.ias.edu
From playlist Mathematics
CGSR | Deterring Aggression by Major Power Adversaries: Insights from Wargaming and Analysis
Abstract: This briefing summarizes findings from wargames and related analyses that examine the operational challenges posed by the nation’s principal state adversaries—China and Russia. The briefing offers judgments about the ability of current and programmed U.S. forces and operating con
From playlist Center for Global Security Research
Sandrine Grellier: Turbulent cascades for a family of damped Szegö equations
HYBRID EVENT Recorded during the meeting "Frontiers of Operator Theory" the November 29, 2021 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Audiovis
From playlist Analysis and its Applications
Take a "Happy" tour of some of CERN's famous sites! Video by an international group of students and features students, staff, and members of the larger CERN community. Featuring "Happy" by Pharrell Williams and directed by CERN technical student Michal Laskowski.
From playlist Music and fun