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Manjul Bhargava and the magic of mathematics..

Manjul Bhargava and the magic of mathematics..

For a few years, I was the resident magician at my son’s birthday parties. That stopped when the kids realized I was repeating the same three tricks. (Funny how you can’t pull wool over the average four year-old’s eyes). Still, I always thought one of those three was a pretty good trick. You ask someone to memorize a card out of a pack, then without ever looking at the faces of the cards, you deal them into three piles, thrice. After the third time, still without looking, you pick out the memorized card. Except with jaded four year olds, it always sets off delighted gasps. What makes it work? No sleight of hand, but just simple mathematics. And that’s why I’m thrilled to find that one of the winners of the 2014 Fields Medal—the big prize in mathematics—teaches a variant of this trick in an entry-level mathematics course. In fact, it’s apparently a whole semester worth of magic: the course is called the Mathematics of Magic Tricks and Games. What a route to learning and loving mathematics.

Read more at: http://www.livemint.com/Opinion/HygMdK56KPYNUOBwDJNIsJ/Manjul-Bhargava-and-the-magic-of-mathematics.html?utm_source=copy

Algebra-cadabra! Here’s a classic magic trick, and the mathematical secret behind it..

Algebra-cadabra! Here’s a classic magic trick, and the mathematical secret behind it..

image Here’s thanking Alex in Numberland and the Guardian for this brilliant bit of MathMagic.. I’ve performed this effect a number of times and it never fails to amaze…

   You only need a cursory familiarity with the work of magicians like Derren Brown and David Blaine to realise that at the heart of many illusions lies a piece of rock-solid mathematics.

Sometimes tricks require fooling people with probability, as Brown expertly did in The System, his classic show about predicting the results of horse races.

And sometimes it relies on genuinely surprising and clever theory.

The literature on mathematical magic overwhelmingly concerns tricks using playing cards.

Irishman Colm Mulcahy is a legendary cardsmith in the mathe-magical community, and his lovely new book Mathematical Card Magic is jammed with entertaining and thought-provoking tricks.

Here’s one that’s in the book…

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