Number of Days Between Easter’s

My three year old asked me a pretty interesting question this morning, “how many sleeps is it until next Easter?”
Continue reading

Posted in Mathematics, Python | Leave a comment

Was there room on the door for two?

Could Jack Dawson (Leonardo DiCaprio) and Rose DeWitt Bukater (Kate Winslet) from the motion picture ‘Titanic’ both have survived by both floating on the door? (Clearly there are a load of spoilers in this article – but the film did come out over 20 years ago so I’m not going to worry too much about it).

[Note: This is a copy of an article I wrote in 2011, which is no longer available online so I’ve repeated it here for prosperity]
Continue reading

Posted in Mathematics, Misc | Leave a comment

Unblock IP address from connecting via SSH

I manage a small cluster at work and occasionally students get their IP address banned by entering the wrong password when logging into the cluster. I don’t fix the problem often enough to remember how to do it, so I thought I’d jot it down here for future reference. Continue reading

Posted in Linux | Tagged , , , | Leave a comment

Probability of World Cup Group Draw

The lineup for the 2018 FIFA World Cup is now complete, and the teams have been sorted into pots ahead of the group stage draw on December 1st. All draws are not equally likely, so what teams is your team likely to face?  Continue reading

Posted in Football, Python | 7 Comments

Correlation of mean transfer spend and UEFA coefficient

How does a countries mean transfer spend relate to its UEFA coefficient? Continue reading

Posted in Football, Mathematics | Leave a comment

Most expensive Premier League football transfer of all time: Rio Ferdinand

No, this post isn’t 15 years late, Rio Ferdinand really did cost “more” than Paul Pogba… Continue reading

Posted in Football, Mathematics | Tagged , , , | Leave a comment

Passwordless SSH on CentOS

The CentOS wiki page misses out a crucial step in setting up passwordless SSH. Continue reading

Posted in Linux | Leave a comment

Complex Reflection Groups

After a spring clean I came across a talk I gave on the classification of complex reflection groups back in March 2011. Continue reading

Posted in Mathematics | Tagged , , , | Leave a comment

Rescan Wireless Networks on Ubuntu

Sometimes I can’t find wireless networks which I know exist (on Ubuntu 16.04). Forcing the wireless interface to rescan fixes the problem.  Continue reading

Posted in Linux | Leave a comment

Distribution of Pancake Day

Today is pancake day and it got me thinking about the fact that I remember the day falling on my birthday (March 7th) just once in my lifetime. How long will I have to wait until it next falls on my birthday?
Continue reading

Posted in Mathematics, Python | Tagged , , | Leave a comment