Arithmetic problems of plane geometry | Circles | Types of polygons
Robbins pentagon
In geometry, a Robbins pentagon is a cyclic pentagon whose side lengths and area are all rational numbers. (Wikipedia).
Arithmetic problems of plane geometry | Circles | Types of polygons
In geometry, a Robbins pentagon is a cyclic pentagon whose side lengths and area are all rational numbers. (Wikipedia).
9/11: The Pentagon Premieres Friday, September 11 at 9/8c. On September 11, 1941, the U.S. War Department broke ground on a massive new five-sided headquarters that would rise to become the ultimate symbol of the American military. Sixty years to the day after construction began, a hijack
From playlist Remembering September 11th, 2001 | History
Deconstructing History: The Pentagon | History
With 17.5 miles of corridors and a total floor area of 6.6 million square feet, the Pentagon is a military complex like no other. #DeconstructingHistory Subscribe for more History: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY videos and full episodes: http://www.history.
From playlist Presidents at War | History
What Were the Pentagon Papers? | History
Explore the circumstances surrounding the leaking of the Pentagon Papers, a top-secret Department of Defense study of U.S. political and military involvement in Vietnam from 1945 to 1967, to the public. Subscribe for more HISTORY: http://histv.co/SubscribeHistoryYT Newsletter: https://ww
From playlist Presidents at War | History
The Warfighters: The Pentagon on September 11th | History
Watch these epic first hand accounts of grit and courage from the Veterans who were there. Check out The Warfighters at History.com. #TheWarfighters Subscribe for more HISTORY: http://histv.co/SubscribeHistoryYT Newsletter: https://www.history.com/newsletter Website - http://www.history.
From playlist The Warfighters | Official Series Playlist
From playlist Harvard Tour
General Keane on General Petraeus's Strategy | American War Generals
General Jack Keane knew General Petraeus was the ideal man to lead the new strategy in Iraq. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class sci
From playlist American War Generals | National Geographic
Robbins' formulas, the Bellows conjecture + polyhedra volumes|Rational Geometry Math Foundations 128
We discuss modern developments in the direction of our latest videos, namely formulas for areas of polygons in terms of the quadrances of the sides. We discuss work of Moebius, Bowman and Robbins on the areas of cyclic pentagons. There is also a rich story about 3 dimensional generalizati
From playlist Math Foundations
General Clark on the Iraq Invasion | American War Generals
General Wesley Clark talks about the reasoning behind the invasion of Iraq in 2003. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists,
From playlist American War Generals | National Geographic
The Computer Chronicles - Computers and the Pentagon Part 1 (1986)
Special thanks to archive.org for hosting these episodes. Downloads of all these episodes and more can be found at: http://archive.org/details/computerchronicles
From playlist The Computer Chronicles 1986 Episodes
Seminar: Some Fundamental Formulas from Metrical Algebraic Geometry
A seminar presented to the School of Mathematics and Statistics, UNSW on June 9, 2015 by N J Wildberger. This talk discusses rather elementary but surprisingly powerful formulas which lie at the base of metrical algebraic geometry. They are presented here in the affine setting, although pr
From playlist MathSeminars
9/11 Timeline: The Attack on United 93 and the Pentagon | History
A timeline of the attack on United 93 and the Pentagon that occured on September 11, 2001. Subscribe for more from HISTORY: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY content: Website - http://www.history.com Twitter - https://twitter.com/history/posts Facebook - http
From playlist Remembering September 11th, 2001 | History
Sleep Experts Debunk 15 Sleep Myths
Two sleep experts debunk 15 of the most common myths about sleep. They explain that boredom, alone, doesn’t make you tired and that you should get out of bed if you can’t fall asleep. They also debunk the idea that loud snoring is nothing more than annoying. In fact, it’s often a sign of a
From playlist Debunked
Tony Robbins Dispels Several Common Myths About Investing | Big Think
Tony Robbins Dispels Several Common Myths About Investing Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- Tony Robbins, aut
From playlist Big ideas in finance & investing | Big Think
Tony Robbins: How Carl Icahn, Wall Street's Activist Investor, Protects Shareholders | Big Think.
How Carl Icahn, Wall Street's Activist Investor, Protects Shareholders Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- When
From playlist Big ideas in finance & investing | Big Think
Laurence Carassus: Pricing without martingale measure
Abstract: For several decades, the no-arbitrage (NA) condition and the martingale measures have played a major role in the financial asset's pricing theory. Here, we propose a new approach based on convex duality instead of martingale measures duality: our prices will be expressed using Fe
From playlist Probability and Statistics
The Gulf of Tonkin Resolution | History
Learn about the international incident that escalated American involvement in the Vietnam War. Newsletter: https://www.history.com/newsletter Website - http://www.history.com /posts Facebook - https://www.facebook.com/History Twitter - https://twitter.com/history HISTORY Topical Video Se
From playlist Presidents at War | History
GTAC 2014: Fire Away Sooner And Faster With MSL!
Bryan Robbins (FINRA) and Daniel Koo (FINRA) Delivering software faster without compromising quality is not a trivial task. We all desire to move at speed by developing tests early and executing tests faster, with a minimal maintenance footprint. At FINRA, we developed MSL (pronounced "Mi
From playlist GTAC 2014
Guns and Rockets (feat. Smarter Every Day) - Objectivity 80
Rocket and ballistics expert Destin Sandlin (from Smarter Every Day) joins Keith at the Royal Society. What will they look at? More special guests on Objectivity: http://bit.ly/Objectivity_Guests Smarter Every Day: https://www.youtube.com/smartereveryday Destin is chatting with Keith Moor
From playlist Special Guests on Objectivity
Lt. General Flynn on His Leadership Style | American War Generals
Lt. General Michael Flynn describes his unique and effective leadership style. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, phot
From playlist American War Generals | National Geographic
What happens when you have a concussion? - Clifford Robbins
View full lesson: https://ed.ted.com/lessons/what-happens-when-you-have-a-concussion-clifford-robbins Each year in the United States, players of sports and recreational activities receive between 2.5 and 4 million concussions. How dangerous are all those concussions? The answer is complic
From playlist New TED-Ed Originals