Is this:

more or less the same this:

```
(for i = 1 ; i <= n ; i ++ )
{
f(i);
}
```

Not really a math guy, but my job research (google results) yields more and more math-y stuff.

Usually when seeing lots of formulae My brain goes “too much math, initiate shut down!”

I was always confounded by the “Sigma” notation …