Sleeplessness? Maths to the rescue!

January 22, 2011 at 2:11 PM

I do enjoy maths. I enjoyed (and still enjoy) the Maths Challenges for secondary school students run by , and I like “numerical crosswords” that are included in the crossword magazine Magpie ( Occasionally I manage to solve a wordy cryptic crossword too.

The other night I was unable to sleep and I started thinking about one of the latest numerical crosswords I had solved. It occured to me that one of the clues “Palindromic prime” could not have four digits. To cut a long story short… within 30 minutes I’d realised that there can be no palindromic primes with an even number of digits, as they are all multiples of 11.

Talk about an over-active mind, all I wanted to do was sleep!! Still, it did help me get to sleep.

My PhD thesis plans have changed a bit recently, I now hope to submit in the first few months of 2012, as there have been a few techinical difficulties that we’ve had to overcome. One of the difficulties was the super computer that I use stopped working. I wish I could say the same about me!!

I dreamt last night that I was a small dog and I couldn’t bark. I hadn’t lost my voice completely, I was just a little husky. Boom boom!!