It’s Friday again! And with a seamless unbroken chain of Follow Friday posts stretching backward through time with no discernible gap, here’s another post with some recommendations of people to follow on Twitter if you’re into maths.
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Porl Air-dursh: a public service announcement
Since we’re all talking and writing about Paul Erdős today, I just thought I’d make a little post clearing up how to write, and how to say, his name.
f(Erdős) = 100
Today is the 100th anniversary of the birth of Paul Erdős, or as most people would call it, Erdős’ 100th birthday. So, Happy Birthday Paul. And if you’ve never heard of him, let’s see what people at his birthday party are saying about the Man Who Loved Only Numbers. Please note: all birthday parties are strictly fictional.

Probably the greatest mathematician of the twentieth century, Paul Erdős … was so eccentric that he made Einstein look normal. He was 11 before he ever tied his shoes, 21 before he ever buttered toast, and died without ever boiling an egg. Erdős lived on the road, traveling from conference to conference, owning nothing but math notebooks and a suitcase or two. His life consisted of math, nothing else.
– Clifford Goldstein, in The Mules That Angels Ride (2005), p. 125
Manchester MathsJam recap, March 2013
Having been absent for last month’s MathsJam, I was keen to have a great time this month so I prepared some nice Easter-based things (since this is the nearest MathsJam to Easter). I thought about egg-shapes, and how to construct them, and came up with a few fun things. The turnout was huge (at its peak, 21+ε: one attendee was expecting) and we spread out over three tables.
Interesting Esoterica Summation, volume 6
Cor, it’s been longer than I thought since I last did one of these. I’ve been happily collecting esoterica for months, thinking I didn’t have enough new stuff to do a summation. It turns out I’ve got 22 new things! Better get cracking with the interest and the summing.
In case you’re new to this: every now and then I encounter a paper or a book or an article that grabs my interest but isn’t directly useful for anything. It might be about some niche sub-sub-subtopic I’ve never heard of, or it might talk about something old from a new angle, or it might just have a funny title. I put these things in my Interesting Esoterica collection on Mendeley. And then when I’ve gathered up enough, I collect them here.
In this post the titles are links to the original sources, and I try to add some interpretation or explanation of why I think each thing is interesting below the abstract.
Some things might not be freely available, or even available for a reasonable price. Sorry.
Karma by Do Ho Suh
via NotCot.org
Newcastle MathsJam January & February 2013 recaps
I’ve finally finally got round to writing up my notes from the last two Newcastle MathsJams, over at my mathem-o-blog.
