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In the first of two articles,
takes a tour through the history of codes and the prospects for truly unbreakable quantum cryptography.
Decoding a war time diary
An account of how a prisoner of war's diary was recently decoded. Donald Hill wrote his diary in a numerical code, disguised as a set of mathematical tables, while in Hong Kong during and after the Japanese invasion of 1941.
Remarkable reversible numbers
Some neat number tricks using numbers read backwards.
Information about information
What is information and how does it shape our reality?
Maths in a minute: Continued fractions
Continued fractions reveal the good, the bad and the beautiful side of numbers.
London tube strike not all bad?
How "forced experimentation" can lead to economic benefits.
Want less traffic? Build fewer roads!
A mathematical "paradox" explains why more roads don't necessarily mean fewer traffic jams.
Tweets by @plusmathsorg
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