The Calkin-Wilf tree on Wikipedia ~ I’m very excited to teach this countability argument Long-Exposure Shot of a Roomba’s Path Shows Beautifully Organized Chaos ~ Polygonal billiards in action Clay Klein bottle ~ “It’s a bad idea to put sealed items in a kiln because they will burst as they heat. It took some time…
Category: Links
Recommended readings (4/27/09)
Barack Obama speaks to the 146th Annual Meeting of the National Academy of Sciences Calculus Made Easy: Being A Very Simplest Introduction To Those Beautiful Methods Of Reckoning Which Are Generally Called By The Terrifying Names Of The Differential Calculus And The Integral Calculus (2nd Ed., 1914), by Silvanus P. Thompson ~ What one fool…
Happy birthday Michael Atiyah
There is a article about Sir Michael Atiyah in the Times Online in honor of his 80th birthday, “Maths and the bomb: Sir Michael Atiyah at 80.”
Arthur Benjamin: Lightning Calculation and Other “Mathemagic”
I’m continuing to enjoy watching mathematics videos online. This week I saw a few math-related TED talks pop up in my news reader and enjoyed watching them: Math = Letting Dead People Do the Work at Let’s Play Math How calculus is changing architecture at Casting Out Nines In case you do not know what…
Recommended readings (3/29/09)
IMA Public Lecture: Mathematics Making Sense of Sensors ~ Robert Ghrist, University of Pennsylvania, January 22, 2009 Fibonacci-Inspired British National Wildflower Center Free Mathematics Books ~ 254 (legal) e-books Price Drop: Stocks, Homes, Now Triple-Word Scores ~ This article contains a beautiful infographic containing the frequency of letters in the English language compared to Scrabble…
Recommended readings (3/22/09)
The Four Color Problem Gets a Sharp New Hue ~ the strong perfect graph conjecture is settled: a graph with neither an odd hole nor an odd anti-hole is perfect Surfaces the Ooze of the Past ~ it was nice to find this post after writing my post on surfaces last week How to Build Your…
Recommended readings (3/12/09)
An ancient typo ~ Has no one noticed this before?!? Stackable letters ~ A new way to classify letters of the alphabet Mathematician answers Supreme Court plea ~ A fair division problem for voting Wolfram|Alpha is coming! ~ The next Segway or the next Google? An Appel a day ~ Seven colors suffice for a…
Recommended readings (2/27/09)
50th Carnival of Mathematics ~ Hosted by John D. Cook at the Endeavor blog Student Expectations Seen as Causing Grade Disputes (readers’ responses: ‘A’ Is for Achievement, ‘E’ Is for Effort) ~ “‘What would happen,’ I asked, ‘if a player showed up at spring training and worked harder than all the others yet still bombed? Would they…
Recommended readings for 2/19/09
I think I will try something different. Once in a while (once a week?) I’ll post links to some of the articles I’ve read and enjoyed. I’m inspired by the beautifully simplistic Trivium. In defense of j ~ It’s time to retire Euler’s choice of the letter i for the imaginary number √-1 The Arbesman Limit ~ People like to have things…
David Richeson: Division by Zero 