Charles Frederick Roos (May 18, 1901 – January 6, 1958) was an American economist who made contributions to mathematical economics. He was one of the founders of the Econometric Society together with American economist Irving Fisher and Norwegian economist Ragnar Frisch in 1930. He served as Secretary-Treasurer during the first year of the Society and was elected as President in 1948. He was director of research of the Cowles Commission from September 1934 to January 1937. Roos earned a PhD in mathematics from Rice University in 1926, under supervision of Griffith C. Evans. He was amongst the first, together with Evans and mathematician Frank P. Ramsey, to use the calculus of variations in mathematical economics. His direct involvement with two key institutions in economic history, both the Econometric Society and the Cowles Commission, place him in a pivotal position in the mathematization of economics in the first half of the 20th century. His own work, however, would not be so influential. Mathematical economics and econometrics eventually favored technical and epistemological approaches that were different from his own. (Wikipedia).
Maxim Kontsevich, Equations for stability
Maxim Kontsevich, IHÉS, France Equations for stability
From playlist Conférence en l'honneur de Jean-Pierre Bourguignon
5 - Grothendieck et la théorie de Galois
Orateur(s) : T. Szamuely Public : Tous Date : mardi 25 octobre Lieu : Institut Henri Poincaré
From playlist Colloque Evariste Galois
Mikhael Gromov, Spinor and Plateau billiards
Mikhael Gromov, IHÉS, France Spinor and Plateau billiards
From playlist Conférence en l'honneur de Jean-Pierre Bourguignon
Journées Hénon - 18/21 - Claude Froschlé
Michel Hénon : un patron, un collègue, un ami
From playlist Michel Hénon Memoriam
Michel Foucault was a philosophical historian who questioned many of our assumptions about how much better the world is today compared with the past. When he looked at the treatment of the mad, at the medical profession and at sexuality, he didn't see the progress that's routinely assumed.
From playlist WESTERN PHILOSOPHY
Interview with Alexander Goncharov
Prof. Alexander Goncharov is the first Gretchen and Barry Mazur Chairholder at IHES and a Professor in Mathematics at Yale University. In this interview he explains how he became interested in mathematics, his connection with IHES and with Barry Mazur, and talks about his research interest
From playlist Les entretiens de l'IHES
Engineering CEE 20: Engineering Problem Solving. Lecture 11
UCI CIvil & Environmental Engineering 20 Engineering Problem Solving (Spring 2013) Lec 11. Engineering Problem Solving -- View the complete course: http://ocw.uci.edu/courses/cee_20_introduction_to_computational_engineering_problem_solving.html Instructor: Jasper Alexander Vrugt, Ph.D.
From playlist Engineering CEE 20: Engineering Problem Solving
Post 1462H / Hemmi 159 and a slide rule conspiracy!
I describe the interesting Post 1462H slide rule and its predecessor/successor. I present the theory that these slide rules inspired a certain model popular in Europe.
From playlist All Slide Rule Videos
Journées Hénon - 20/21 - André Brahic
Michel Hénon : un modèle pour nous tous
From playlist Michel Hénon Memoriam
The Ruelle invariant and convexity in higher dimensions - Julian Chaidez
Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar Topic: The Ruelle invariant and convexity in higher dimensions Speaker: Julian Chaidez Affiliation: Member, School of Mathematics Date: June 24, 2022 I will explain how to construct the Ruelle invariant of a symplec
From playlist Mathematics
Geraldine Rojas & Ezequiel Paludi - Vals
Geraldine & Ezequiel "Couleurs Tango Festival" Paris, April 5, 2009
From playlist Tango
AQA A Level Maths Specimen Paper 3 Walkthrough Question 11 Statistics - Probability Function
The STATISTICS section of the AQA A Level Maths Specimen Paper 3. A discrete probability function Welcome to my walkthrough of the AQA A A-level Maths Specimen Paper 3! This A level maths paper contains core maths and Statistics, and makes ideal revision for students studying A Level M
From playlist AQA A Level Maths Specimen Paper 3 Walkthrough
Learn Chinese with Mike: Lesson 7 (Tones)
I introduce the four main tones of Mandarin Chinese. See the chapter download at www.chinesewithmike.com for supplemental information Follow me on Facebook www.facebook.com/chinesewithmike Twitter: www.twitter.com/ChineseWithMike Check out the website: www.chinesewithmike.com
From playlist Learn Chinese with Mike
Bonus Video 3: It's Complicated | MIT ChemLab Boot Camp
View the series: http://ocw.mit.edu/bootcamp Instructor: Dr. John Dolhun, 5.301 students Ever wonder if MIT students have love lives? License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu WARNING NOTICE: The experiments descri
From playlist ChemLab Boot Camp
What the bulldozers left behind: reclaiming Sicán’s past
Inverse-Face Beaker, 10th-11th century, Sicán (Lambayeque), Peru, gold, 20 x 18.1 cm (The Metropolitan Museum of Art) ARCHES (At Risk Cultural Heritage Education Series)
From playlist S. America before European colonization | Art of the Americas to World War I | Khan Academy
AQA A Level Maths Specimen Paper 2 Walkthrough Question 13: Mechanics - Forces in Vector Form
The mechanics section of the AQA A Level Maths Specimen Paper 2! Dealing with forces in Vector form; finding the resultant, calculating an angle between vectors and finding a force to produce equilibrium. Welcome to my walkthrough of the AQA A A-level Maths Specimen Paper 2! This A level
From playlist AQA A Level Maths Specimen Paper 2 Walkthrough
Don't mess with the roo crew. Watch with Described Video: https://youtu.be/UzjYWCHZg1s Support Animalogic on Patreon: https://www.patreon.com/animalogic Subscribe for new episodes on Fridays http://bit.ly/SubscribeToAnimalogic ----------- SOCIAL MEDIA https://www.tiktok.com/@animalog
From playlist Animalogic
Croc vs. Roo | Australia's Deadly Monsters
The water’s edge is the crocodile’s preferred kill zone. ➡ Subscribe: http://bit.ly/NatGeoWILDSubscribe #NatGeoWILD #Crocodiles #Wallaroos About Australia's Deadly Monsters: Australia's Deadly Monsters are supremely adapted to life within the great southern continent’s varied and often
From playlist Trending Videos | National Geographic
Louis Fayard - Le Boson de Brout-Englert Higgs
Les Amis de l'IHES. Conférence grand puublic du jeudi 15 mai 2014 donnée à l'IHES. Louis Fayard, LAL, Orsay "Le boson de Brout-Englert Higgs : la recherche, la découverte et les premières propriétés"
From playlist Évenements grand public