New journal publishes inaugural issue

The inaugural issue of Rejecta Mathematica is now available online. In case you haven’t heard of this one-of-a-kind journal, here is part of their mission statement: Rejecta Mathematica is an open access, online journal that publishes only papers that have been rejected from peer-reviewed journals (or conferences with comparable review standards) in the mathematical sciences….

What is the LaTeX code for that?

It is hard to count how many times I’ve scrolled through Scott Pakin’s The Comprehensive LATEX Symbol List (pdf) looking for the LaTeX code for some obscure mathematical symbol. That pdf document may no longer be the first place I turn. Daniel Kirsch, a math student from Münster, Germany has created a very useful website…

Videos of past meetings of the ICM

As you may know, the 2010 International Congress of Mathematicians will be held in Hyderabad, India. This weekend I received an invitation to speak at one of the satellite conferences (Various Aspects of Dynamical Systems) at The Maharaja Sayajirao University of Baroda in Vadodara, India, which is being held immediately after the ICM. Needless to…

Quantifier soup

Anyone who has tried to teach Calculus I students the definition of the limit knows that students have a difficult time working out definitions with multiple quantifiers. In fact it is something that we must come back to again and again with our mathematics majors. While doing a little research this week I came across…

Ambigram: pie≠3.14

I thought the first comment on this article was funny. It says that pie and 3.14 are mirror images, if written in a certain way. Regular readers may recall that I had fun creating ambigrams a few months ago. This blog comment inspired me to whip up a quick ambigram exhibiting this symmetry. I like…

Last Sunday was a perfect day

Most geeky math types (like me) already know about pi day (March 14… 3/14, get it?). Writing in The Times Online, Marcus du Sautoy suggests a new math holiday: June 28. He suggests calling this day the World Math Day (actually, he suggests World Maths Day). Why? What is so mathematical about June 28? June 28 can…