Pi shows up in many areas that have nothing to do with geometry.  For 
example, the integral of exp(-x^2) over the whole real line is sqrt(Pi). 
    Also, the infinite series 1/1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ... = 
Pi/4.

- Martin

David Mirly wrote:
> Is pi really inherent throughout the universe?  
>  
> Won't the concept of pi break down in the presence of sufficiently 
> strong gravity?
> i.e. Euclidian plane geometry is only a good approximation for our 
> "normal/every day" applications.
> 
> 
> On Dec 6, 2006, at 9:52 AM, [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> 
> wrote:
> 
>> There seems to be a constant about the nature of number across all 
>> cultures: that they have a magically aspect and seem to be an integral 
>> part of the nature of the universe.  Of course some numbers seem to be 
>> more magic than others, e.g. Pi.  Why numbers are inherent in the 
>> universe is another interesting question considering wave and field 
>> theory. Magic?
>>  
>> cheers Paul Paryski
>> ============================================================
>> FRIAM Applied Complexity Group listserv
>> Meets Fridays 9a-11:30 at cafe at St. John's College
>> lectures, archives, unsubscribe, maps at http://www.friam.org
> 
> 
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> 
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> FRIAM Applied Complexity Group listserv
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