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    Hans Rosling and Raymond Smullyan have died

    By Katie Steckles. Posted February 10, 2017

    Image from Wikipedia, CC-BY David Shankbone

    Why should I worry about dying? It’s not going to happen in my lifetime! Raymond Smullyan, This Book Needs No Title (1986) This week, the mathematical community has lost not one but two of its most beloved practitioners. Earlier this week, Swedish statistician Hans Rosling passed away aged 68, and today it’s been announced that author…

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    Carnival of Mathematics

    Carnival of Mathematics 142

    By Katie Steckles. Posted February 10, 2017

    The next issue of the Carnival of Mathematics, rounding up blog posts from the month of January, and compiled by Manan, is now online at Math Misery. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.

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    Travels in a Mathematical World

    Math Teachers at Play #104

    By Peter Rowlett. Posted January 29, 2017

    Welcome to #104 of the Math Teachers At Play (MTaP) blog carnival. A blog carnival is a regular blogging round up coordinated by someone (in this case Denise Gaskins) that moves around different blogs each edition. This time, I’m taking a turn.

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    Irregulars

    Dani’s OEIS adventures: triangular square numbers

    By Dani Poveda. Posted January 27, 2017

    First four square triangular numbers, each one as a square of squares and two triangles

    Hi! I’m Dani Poveda. This is my first post here on The Aperiodical. I’m from Spain, and I’m not a mathematician (I’d love to be one, though). I’m currently studying a Spanish equivalent to HNC in Computer Networking. I’d like to share with you some of my inquiries about some numbers. In this case, about triangular…

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    Blackboard Bold

    Mobile Numbers: Products of Twin Primes

    By Katie Steckles. Posted January 23, 2017

    In this series of posts, Katie investigates simple mathematical concepts using the Google Sheets spreadsheet app on her phone. If you have a simple maths trick, pattern or concept you’d like to see illustrated in this series, please get in touch. Having spoken at the MathsJam annual conference in November 2016 about my previous phone spreadsheet…

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    News

    Graph Isomorphism panto: oh no it isn’t; oh yes it is!

    By Katie Steckles. Posted January 21, 2017

    As we reported back in November 2015, László Babai came up with an algorithm to decide if two graphs are isomorphic in quasipolynomial time. At the time, this proof still needed peer review, and in the last week or so, two big developments have occurred on that front. On Wednesday 4th January, an error was discovered…

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    Travels in a Mathematical World

    Mathematical genius: extrapolate from your own experience?

    By Peter Rowlett. Posted January 12, 2017

    The BBC biography series Great Lives covered in its most recent episode Srinivasa Ramanujan. In the closing minutes of the programme, host Matthew Paris said this, which I found quite interesting (or at least, interestingly expressed): I’m so far from understanding the mind of a mathematical genius that it’s simply inconceivable that you could tell a…

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