Posted in carnival of mathematics.

It’s the 110th Carnival of Mathematics – and I fear I’ve drawn the short straw. I suppose, as the numbers climb higher, there are fewer interesting facts to go around. However, a few that jump out: it gives the minimal value (-5) of the Merten’s function ( http://en.wikipedia.org/wiki/Mertens_function ) it’s

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Posted in carnival of mathematics.

On 30th June, 1987, the Canadian mint introduced the new $1 coin, or ‘loonie’, and Patrick Sjöberg of Sweden set a new high jump world record of 2.42 metres (only 3cm short of the current world record). Footballers Lionel Messi and Samir Nasri were less than a week old, and

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