The 20 most-watched TEDx talks so far News X marks the spot: This week’s TEDxTalks Each week, TEDx chooses four of our favorite talks, highlighting just a few of the enlightening speakers from the TEDx community, and its diverse constellation of ideas worth spreading. Below, give this week’s talks a listen. Global Issues 4 TEDxTalks on how the world could end today (but, chances are, won’t) Well, it’s December 21st, 2012, in EST time zones and, if you’re reading this, the world has not ended. Who Can Name the Bigger Number? [This essay in Spanish][This essay in French] In an old joke, two noblemen vie to name the bigger number. The first, after ruminating for hours, triumphantly announces "Eighty-three!" The second, mightily impressed, replies "You win." A biggest number contest is clearly pointless when the contestants take turns. So contestants can’t say "the number of sand grains in the Sahara," because sand drifts in and out of the Sahara regularly. Are you ready? The contest’s results are never quite what I’d hope. And yet the girl’s number could have been much bigger still, had she stacked the mighty exponential more than once. , for example. or Place value, exponentials, stacked exponentials: each can express boundlessly big numbers, and in this sense they’re all equivalent. —yet the first number is quotidian, the second astronomical, and the third hyper-mega astronomical. Such paradigms are historical rarities. And herein lies a parallel with another mathematical story. .) . Fee. Nope. Conclusion?
Fantasy Tour De France Game Now Live By BikeRadar | Thursday, June 27, 2013 8.00am The BikeRadar Fantasy Tour de France game is nearing its closing date for registration. You have until 17:00 GMT+1 on Friday 29 June to register and choose your team. There are some fabulous prizes on offer, including grandstand seats for the final stage of the 2013 Tour de France - but you'll need to get your team in soon. You can play for free, limited to one team per entrant. All you need to do is pick nine riders, a team and a bonus stage and you'll have a chance to transfer up to 24 riders during the course of the race. You score points from stage placings down to 20th, your team scores if one of your riders finishes in the top five on the stage, and you get additional points if your riders finish a stage or retain the yellow or green jersey at the end of a day. Your team will score double points in your nominated bonus stage. Click here for the full rules list. Win trips to the Tour, Vuelta and Lanzarote Click here for the full prize list.
JimBobJenkins's Channel Game Theory 101: The Complete Textbook on Amazon: Two prisoners are locked into separate interrogation rooms. The cops know they were trespassing and believe they were planning on robbing a store, but they lack sufficient evidence to charge them with the latter crime. If no one confesses, both will only be charged with trespassing and receive a sentence of one month. If each prisoner only want to minimize the amount of time he spends in jail, what should they do? This lesson introduces the concept of strict dominance, which is a very useful tool for a game theorist.
10 TED talks about the beauty - and difficulty of being creative Moebius (Möbius) strip in art and culture | Imaging and a little bit of OSS In 1858, two German mathematicians, August Ferdinand Möbius and Johann Benedict Listing, independently discovered what is popularly known as the Möbius strip. The characteristic feature of Möbius strip is that it is a surface with single side. In its most simplest form a Moebius strip can be constructed out a a strip of paper which is twisted halfway and the ends joined together. Basic Moebius strip (twisted ribbon) A Mobius strip can be expressed mathematically in several diffferent forms. x(u,v) = cos(u) + v*cos(u/2)*cos(u) y(u,v) = sin(u) + v*cos(u/2)*sin(u) z(u,v) = v * sin(u/2) Default values for u and v: u = [0, 2π] for one complete loop;, v = [-0.4, 0.4] An equation for constructing a Moebius Strip using Matlab can be found at the Univesity of Stutgart’s mathematic department – Matlab code repository. Rendering of Moebius strip using Matlab M. M.C.Escher has another piece of art in the form of a Moebius strip. M. Moebius Strip written onto a transparent Moebius Strip Robert R.
Home | TWiT.TV Math-ish question I'm in the process of building a Jerry Andrus-like "impossible object" that I've designed, and I've run into a snag with the shape of one of the pieces. I'm hoping someone more math-oriented than me here could help me with it. The piece is best described like this. Picture a rectangular box. The top and bottom are squares, so the width and depth are equal: Now picture two lines: one running from top to bottom along the inner right edge; and the other forming a diagonal, from the inner top left corner to the outer bottom right corner (the front and right faces of the box are removed for clarity): What I'm interested in is the curved surface bound by those two lines: Specifically, I'm trying to figure out how to map this 3-d shape onto a 2-d surface -- in other words, I want to figure out what shape I would need to cut a flat piece of paper into, so that when it was twisted it would form the above shape. To help figure this out, I've made a few rough models like this: 1. 2. 3. 4. 5. 6. 7. 1.
Watch TV Shows and Series Online at Coke &Popcorn! Download videos from Youtube, SoundCloud mp3, Facebook, VK, Putlocker, Xvideos & more... 10 Good Reasons why our users love TubeOffline:1. Its Free! 2. Math Monday – The Squared Square – The Museum of Mathematics Math Monday: The Squared Square by George Hart If you’re a cabinet maker, geometry is essential to all of the lengths and angles that you calculate. The cabinet shown here goes further and presents the solution to a rather difficult dissection problem. This is the simplest perfect squared square. There are twenty one different squares, with the sizes indicated below, covering a 112 by 112 area. Taking this solution and turning it into a beautiful piece of furniture was the work of Bob Mackay.
Fibonacci Flim-Flam. The Fibonacci Series Leonardo of Pisa (~1170-1250), also known as Fibonacci, wrote books of problems in mathematics, but is best known by laypersons for the sequence of numbers that carries his name: This sequence is constructed by choosing the first two numbers (the "seeds" of the sequence) then assigning the rest by the rule that each number be the sum of the two preceding numbers. Take any three adjacent numbers in the sequence, square the middle number, multiply the first and third numbers. The Fibonacci sequence is but one example of many sequences with simple recursion relations. The Fibonacci sequence obeys the recursion relation P(n) = P(n-1) + P(n-2). A striking feature of this sequence is that the reciprocal of f is 0.6180339887... which is f - 1. The ratio f = 1.6180339887... is called the "golden ratio" or "golden mean". Note: Writers on this subject sometimes concentrate on f and some on 1/f as the ratio of interest. It's easy to invent other interesting recursion relations.