The CentOS wiki page misses out a crucial step in setting up passwordless SSH. Continue reading
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 classification, complex reflection groups, group theory, mathematics
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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
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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?
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Delete large number of jobs with SGE
Sometimes I accidentally add lots of jobs to our SGE queue and want a quick way to delete them. Continue reading
Relationship between Car Insurance Price and Population Density
There was some discussion in my office today about the correlation between car insurance prices and where you live. The idea being that the prices are correlated with population density. Continue reading
Posted in Internet, Mathematics
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Install G77 on Ubuntu >=14.04
In 2012 I wrote how to install G77 on Ubuntu >=9.04. However that approach no longer works (yet that particular blog posts gets lots of hits because of a link from stackoverflow). So here are some updated instructions which work for Ubuntu >= 14.04. Continue reading
How to Install the Edimax AC600 Wireless Driver for the Raspberry Pi
I use an Edimax AC600 series USB wireless device for my raspberry pi. Here is the easy way to install the driver for it. Continue reading
Number of Unique Song Choices on Desert Island Discs
Desert Island Discs celebrates its 75th birthday today, and today’s guest is David Beckham. Beckham will pick 8 song choices to take away with him on a desert island. What I wondered was, will all of his song choices have been picked by guests previously? With over 3,000 episodes there are going to be a lot of repetitions. Continue reading
Posted in Internet
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Dealing with WordPress Security Issues
Recently another WordPress site that I manage has had a lot of malware issues. Continue reading
Posted in Internet
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