articles - page 7 | Sean Elvidge

A varied collection of thoughts and ideas, usually around statistics, football, space weather or potentially interesting tidbits.

A Short History of Nearly Everything - Some Corrections

Some corrections in A Short History of Nearly Everything

5 min read · March 31, 2012

2012 · books
1 = 2

1 = 2

1 min read · February 17, 2012

2012 · mathematics
Sine Rule on a Sphere

How to use the sine rule on a sphere

2 min read · January 04, 2012

2012 · mathematics
Cosine Rule on a Sphere

How to use the cosine rule on a sphere

3 min read · January 02, 2012

2012 · mathematics
Batch Process in Bash

How to do the same process on a large number of files in Bash

2 min read · March 18, 2011

2011 · code bash
God's Number is 20

You never need more than 20 moves to solve a Rubik cube

6 min read · February 15, 2011

2011 · mathematics
Recurring Decimals - Something on the Repetend

How to calculate the size of the repetend for recurring decimals

3 min read · August 26, 2010

2010 · mathematics
Hilbert's Hotel

Use Hilbert's hotel to rethink about infinity

5 min read · August 26, 2010

2010 · mathematics
Probability of Sharing a Birthday

What is the probability of two people sharing a birthday

4 min read · August 24, 2010

2010 · mathematics