>> So, I'm not formally trained in mathematics at all. Normally, I can
>> muddle through. I kept seeing the following mysterious symbol: Π
>>
>> Err... what on earth?
>
> looks like pi to me...
It *is*. It's the uppercase Greek letter pi (whereas the famous
mathematical constant is the lowercase pi.) And the summation symbol is
the (uppercase) Greek letter sigma...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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