Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php2014-12-19T04:18:36-05:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializerProfessor Keith Devlin on Youtubehttp://www.mathblogging.org/post/1069772014-12-18T19:49:00-05:00David<br /> <br />Dr. Keith Devlin is a mathematics professor at Stanford University in
[…]Comienza el carnaval navideño. Edición 5.9http://www.mathblogging.org/post/1069762014-12-18T19:19:52-05:00EbeniTICUn año más Que no te aburran las M@tes aloja la edición de diciembre, ya sabes participa del 19 al 25
http://matesnoaburridas.wordpress.com/2014/12/15/carnaval-de-matematicas-edicion-5-9-enma-castelnuovo/On This Day in Math - December 19http://www.mathblogging.org/post/1069742014-12-18T19:00:00-05:00Pat Ballew<br />If equations are trains threading the landscape of numbers,<br />then no train stops at pi. ~Richard Preston<br /><br />The 353rd day of the year; 353 is the last day of the year that is a palindromic prime. It is the first multi-digit palindromic prime with all prime digits. Also, it is the smallest number whose 4th power is equal to the sum of four other 4th powers, as discovered by R. Norrie in 1911: 3534 = 304 + 1204 + 2724 + 3154. *Wik <br /><br /><br />EVENTSOn 19th December 1705 the demonstrator of experiments at the Royal […]The City before Christmashttp://www.mathblogging.org/post/1069752014-12-18T18:55:52-05:00ioanaiulianaWe are very close to Christmas and I thought that it would be nice to share with you some of the photos I have made around the city. As you already know (About me) I am living in Aberdeen, Scotland … Continue reading →Nice Neighbors, Spinning GIFs, and Breakfasthttp://www.mathblogging.org/post/1069732014-12-18T18:48:31-05:00Justin LanierWelcome to this week’s Math Munch! Math projects are exciting—especially when a whole bunch of people work together. One example of big-time collaboration is the GIMPS project, where anyone can use their computer to help find the next large prime number. Another is the recent MegaMenger project, where people from all over the world helped to build […]Where Do Your Students Max Out?http://www.mathblogging.org/post/1069702014-12-18T18:24:48-05:00Megan SchmidtSome of my tweets this week have gone insane. Hedge (@approx_normal) and I have started Insanity Max 30 (Read: Twitter Math Camp is in LA this summer). One of the major components is to write down the time in which you “max out” or take a break for the first time. The obvious goal is to […]A quick note on Kružno, official game of the village of Kružno*http://www.mathblogging.org/post/1069722014-12-18T18:21:00-05:00Mark<br /><br />I've got a couple more post I'd like to do on Kružno, the abstract strategy game I developed a few years ago, a post on abstract strategy games and another on trying my hand at small scale manufacturing (and why I ended up using chess pieces in a checkers variant). Unfortunately, I'm a bit pressed for time and I really wanted to get something out today, so this will have to do for now.<br /><br />You can find the rules here and the game itself here. The game takes about three to five minutes to […]a neat (theoretical) Monte Carlo resulthttp://www.mathblogging.org/post/1069712014-12-18T18:14:44-05:00xi'anMark Huber just arXived a short paper where he develops a Monte Carlo approach that bounds the probability of large errors by computing a lower bound on the sample size r and I wondered at the presence of μ in the bound as it indicates the approach is not translation invariant. One reason is that […]Day 70 - Exploring Exponentshttp://www.mathblogging.org/post/1069692014-12-18T17:43:00-05:00Regan GalvanI remember thinking about how to teach certain concepts last year at EdCamp LA. Meeting twitter acquaintances like John Stevens, Jed Butler, and Matt Vaudrey, I finally got the sense of the scale of the power of the Mtbos. They were able to fill in a few gaps with engaging lesson ideas.... and they are just 3 of MANY math teachers in my PLN (are we still using that acronym?).<br /><br />Before EdCamp, I didn't know what I didn't know. Now I know, or almost know, and it is both awesome and overwhelming […]The role of proofs in mathematical writinghttp://www.mathblogging.org/post/1069682014-12-18T17:42:18-05:00SixWingedSeraphThis post outlines the way that proofs are used in mathematical writing. I have been revising the chapter on Proofs in abstractmath.org, and I felt that giving an overview would keep my mind organized when I was enmeshed in writing up complicated details. Proofs are the sole method for ensuring that a math statement is […]Effective Sample Sizehttp://www.mathblogging.org/post/1069672014-12-18T17:25:24-05:00leinsterYet another place where the concept of magnitude turns up: the statistical notion of effective sample size.Geometry Students' Vlogshttp://www.mathblogging.org/post/1069652014-12-18T17:20:00-05:00Regan GalvanMy geometry students recently did their 2nd video blog. I assign them each a different proof and they create a diagram and explain how to prove. See two of my favorites from this year and the prompt below.<br /><br />Jayla<br /><br />Bridget<br /><br /><br />Tips for making video blogs and embedding (Links to an external site.)1. Must be typed, including diagram, symbols and tick mark notation (I suggest using Google Drive's Drawing App)2. Must use a screen capture tool like jing that will record your voice and your typed
[…]Researchers from UT-Austin and University of Colorado discuss uncertainty in storm predictionshttp://www.mathblogging.org/post/1069642014-12-18T17:00:11-05:00karthikaHow can mathematical models help in the prediction of storms and hurricanes? How do they help determine the uncertainty that underlies extreme weather conditions? Understanding these answers can help reduce the human and monetary costs associated with natural disasters. Lindley Graham of the University of Texas at Austin and Troy Butler of the University of […]New Theme: Radcliffehttp://www.mathblogging.org/post/1069662014-12-18T16:57:04-05:00Daniel W. RobertRadcliffe is a bold, modern theme that puts your content at center stage. Quick comments on the NIPS experimenthttp://www.mathblogging.org/post/1069612014-12-18T16:45:28-05:00Boaz Barak[One can tell it’s reviewing and letter-writing season when I escape to blogging more often..] There’s been some discussion on the NIPS experiment, enough of it that even my neuro-scientist brother sent me a link to Eric Price’s blog post. The gist of it is that the program chairs duplicated the reviewing process for 10% of the […]Specifications Grading: Final(?) Thoughtshttp://www.mathblogging.org/post/1069632014-12-18T16:38:14-05:00bretbeneshI have really enjoyed our discussions of Specifications Grading. I have learned a lot from it, and I have enjoyed the conversations (which I will continue to engage in). I particularly want to thank Theron Hitchman, Robert Talbert, and Andy Rundquist for helping me think through this. I feel like I kept asking the same […]Smoke Signals, Morse Code or ... ?http://www.mathblogging.org/post/1069622014-12-18T16:14:00-05:00distlerA privacy issue fails to get a real response.Rules of Kruznohttp://www.mathblogging.org/post/1069602014-12-18T16:06:00-05:00Mark<br /><br />I've been alluded quite a bit to Kruzno, a game I developed a few years ago and which I am currently selling on Amazon, but I don't think I've ever posted the rules so here they are.<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />MPS Awardee Spotlight: Daniel Spielmanhttp://www.mathblogging.org/post/1069592014-12-18T15:41:14-05:00UnknownDaniel Spielman was appointed a Simons Investigator in Theoretical Computer Science as a part of the foundation’s inaugural class in 2012. By combining mathematics with computer science, Spielman is able to make the process of solving mathematical problems faster and more efficient.That new beetle? Actually, it’s really an old beetlehttp://www.mathblogging.org/post/1069582014-12-18T15:30:18-05:00Cat FergusonA team of entomologists in India had to put their new species celebration on hold last year, when they found out their discovery had already been discovered. The Journal of Insect Science paper, initially published in December 2012, was retracted in October 2013, after several entomologists confirmed that the beetle was actually a previously identified species called Acanthophorus serraticornis. (The […]The post That new beetle? Actually, it’s really an old beetle appeared
[…]Remotely Mounting a USB Drivehttp://www.mathblogging.org/post/1069562014-12-18T15:27:00-05:00Paul RubinAs I try to retire an old PC running Mythbuntu in favor of a new replacement, I continue to learn things about Linux ... with a gun to my head, as it were.<br /><br />Without getting into the gory details, I can no longer work directly on the old PC -- I can't get a functioning display. I can, however, connect either by SSH terminal session or remote desktop. Once I get my recordings and database off the old box and onto the new one, I'm going to wipe the operating system, install something like Linux […]Impossible sqaurehttp://www.mathblogging.org/post/1069542014-12-18T15:14:00-05:00Vlad AlexeevImpossible square
by CareCube
http://im-possible.info/english/art/montage/carecube.html
Author - http://carecube.deviantart.com/
Class Opener – Day 73 – You Can’t…Because You Can’thttp://www.mathblogging.org/post/1069552014-12-18T15:02:16-05:00Bob LochelIn the past few days, my 9th graders have worked through a chapter on polynomials: multiplying, factoring, solving, simplifying. There’s a lot of process here, and often my fear is that students attempt to memorize short-cuts (such as the old … Continue reading →M.C. Escher’s magical, mathematical art arrives at National Gallery of Canadahttp://www.mathblogging.org/post/1069492014-12-18T14:42:42-05:00UnknownM.C. Escher’s magical, mathematical art arrives at National Gallery of Canada: Lucy Scholey:
The Dutch artist’s illusions feel like a magical mind bend. Yet his mathematical art follows logic. The two seemingly contradictory truths about Escher’s work play out in a rarely seen exhibit of the Dutch artist’s prints at the National Gallery of Canada that opens to the public on Saturday.
[source: mme rss]Paper appears in PRBhttp://www.mathblogging.org/post/1069482014-12-18T14:33:50-05:00abaggaleyOur work on bundles of quantised vortex rings in finite temperature superfluid helium has been published in Physical Review B: http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.224514Back to schoolhttp://www.mathblogging.org/post/1069522014-12-18T14:28:00-05:00Joanne MorganIn two weeks I'll return to school from maternity leave. I've done this before, but not mid-way through a school year. I'll only be working three days a week but teaching eight different classes, all shared with another teacher. It's going to be a challenge.
On top of the anxieties associated with teaching lessons for the first time since May, I'll be getting my seven month old baby settled intoThe beauty I see in algebrahttp://www.mathblogging.org/post/1069532014-12-18T14:19:09-05:00tomcircleOriginally posted on Math Online Tom Circle:<br />The beauty I see in algebra: Margot Gerritsen at TEDxSTANFORD: From equations to matrices… to Google search, MRI body scan, …Beyond Tetris: a brief history of patriotic video gaming in Russiahttp://www.mathblogging.org/post/1069502014-12-18T14:18:49-05:00UnknownBeyond Tetris: a brief history of patriotic video gaming in Russia: Cat Goodfellow:
These simple, hard-to-beat, games were not an exclusively Russian craze, but there was a certain cultural logic to them: in a climate where engineering, science and mathematics were highly prized, games promised mental training. They were socially palatable, devoid of political ideology. They offered a comforting view of the world: strategise; make the correct moves and a win is assured.
[source: mme rss]Is String Theory About to Unravel?http://www.mathblogging.org/post/1069512014-12-18T14:15:49-05:00UnknownIs String Theory About to Unravel?: Brian Greene:
That was 30 years ago this month, making the moment ripe for taking stock: Is string theory revealing reality’s deep laws? Or, as some detractors have claimed, is it a mathematical mirage that has sidetracked a generation of physicists?
[source: mme rss]CFR: SoTFoM, SYMPOSIUM II `COMPETING FOUNDATIONS?'; INSTITUTE OF PHILOSOPHY, LONDON, 12-13 January 2015.http://www.mathblogging.org/post/1069462014-12-18T13:33:00-05:00Richard PettigrewThe organisers are delighted to announce a provisional programme and call for registration for the upcoming Symposium in the Foundations of Mathematics, to be held at the Institute of Philosophy in London on 12-13th January 2015. There will be an additional (free) affiliated talk by Benedict Eastaugh at the Institute on the 14th January.<br /><br />Sponsors: The Institute of Philosophy, Mind Association, British Logic Colloquium, Aristotelian Society, British Society for the Philosophy of Science, and […]