Happy birthday to MC Hammer who, at age 52, is now mathematically untouchable.

# You're reading: Posts By Christian Perfect

### Math Awareness Month 2014

Hey, you! Are you aware of **MATH**?

Well, of course *you’d* say yes. But every year the AMS runs a Math Awareness Month in April as an excuse to promote a load of great materials and events designed to attract *other* people to the subject.

### James Grime’s house-building problem

Aperiodipal James Grime has put a new video on his YouTube channel. He’s got a problem to do with building houses:

But James posts fantastic videos about maths puzzles all the time; what’s so notable about this one?

I was involved, that’s what! The puzzle can be done on pen and paper but it involves a lot of drawing and calculating, so James asked if anyone could make a computery version. I spent my day off work last week making just such a thing: the computerised Building Houses Problem.

### Yakov Sinai awarded the 2014 Abel Prize

The Abel Prize for 2014 has gone to Yakov Sinai of Princeton University, “for his fundamental contributions to dynamical systems, ergodic theory, and mathematical physics”.

### Everyone’s a mathematician

This morning Katie and I had a little discussion about house style on The Aperiodical. Mathematican Paul Taylor was listed as “Mathematician Paul Taylor” in the blurb for his featured post. I posited that everyone published here is a mathematician, so the “Mathematician” title is redundant.

This of course resulted in me writing a userscript which automatically prepends every name on the page with the honorific “Mathematician”.

### Mathematics Educators Stack Exchange

There’s a new Stack Exchange site for mathematics educators to ask and answer questions to do with the teaching of mathematics.

To give you an idea of what the site’s for, here are a few interesting questions that have already been asked:

- How can I estimate the length of an exam? (top answer: do it yourself, and multiply by 8)
- What is a good handwriting font for mathematics? (more data for Let’s Talk About X, which provoked a lot of discussion here a while ago)
- How to assign homework when answers are freely available or attainable online? (top answer: remember the true meaning of
~~Christmas~~homework)

The site is quite US-oriented at the moment because of who’s using it, but it doesn’t specifically exclude non-Americans from its remit.

### Integer sequence review: A193430

*The Online Encyclopedia of Integer Sequences contains over 200,000 sequences. It contains classics, curios, thousands of derivatives entered purely for completeness’s sake, short sequences whose completion would be a huge mathematical achievement, and some entries which are just downright silly.*

*For a lark, David and I have decided to review some of the Encyclopedia’s sequences. We’re rating sequences on four axes: Novelty, Aesthetics, Explicability and Completeness.*

This is the triumphant return of the integer sequence reviews!

A193430

Primes p such that p+1 is in A055462.23, 6911, 5944066965503999, ...