## Tuesday, September 14, 2010

### Names

I believe I have written a post earlier about names in Science. I am prompted to write again by a particularly irritating phenomenon in Category Theory. It seems that names are being introduced for vague concepts and used as ideological weapons.

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### In the news again

In the past few days all the members of the University have received emails from a president of a faculty here in Como suggesting that the Rector and the Rector Vicario resign. Other emails have been received from another president, and an ex president in Varese.

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## Friday, September 03, 2010

### A formula

If
$A=\left( \begin{array}{ccc} 25 & 15 & 30 \\ 104 & 80 & 120 \\ 30 & 30 & 30 \end{array} \right)$
and
$B_k= \left( \begin{array}{ccc} -2k^2+k+4 & 2k^2+7k+6 & 0 \\ 2k^2+7k+2 & 0 & 2k^2+7k+6\\ 2k^2-k & 0 & 0 \end{array} \right) }$
then the (scaled) columns of
$A\prod_{k=2}^{n}B_k$
tend towards
$\left( \begin{array}{c} log(2)\\ \pi \\ 1 \end{array} \right)$
as $n\to\infty.$

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