Re: [MSA-Math-Club-NYC] August Meetup

From: David
Sent on: Saturday, July 18, 2009 11:39 AM
Hi Everyone,

There was a Gentleman from Stevens Institute of  Technology, in the last 
meetup, that wanted to prepare a talk on Neural Networks (NN).  If you 
would like to give a talk on NN, you are welcome to do so on the 
upcoming meetup.

Please let me know, David
> Hi Guys,
>
> Well, I can start the lecture by giving an introduction to groups as 
> well as their extensions, rings and fields. We can then dwell on this 
> topic further and talk about applications in the meetup after this 
> one. Unless, any one of you wants to prepare a talk and demonstrate 
> some applications on this meetup.
>
> Let me know, David
>> On Thu, Jul 16, 2009 at 11:22 PM, Sal <[address removed] 
>> <mailto:[address removed]>> wrote:
>>
>>     Hello,
>>
>>
>> Morning,
>>  
>>
>>     Well, there are many practical applications of group theory.
>>
>> Really?  Then why is it whenever someone mentions the "practical uses 
>> of group theory" they *always* mention the same four topics: 
>> crystallography, the Standard Model of physics, error correction and 
>> cryptography? Based on probability alone I would expect to hear more 
>> than four topics mentioned by X mathematicians where X > 4.
>>
>>     Channel coding theory and  quantum error-correcting codes are two
>>     branches of science that are based on group theory.
>>
>>
>> See!  :-)
>>  
>>
>>     In order to design an error correcting code that corrects
>>     information transmitted over public noise channel, one needs to
>>     find an Abelian group with certain properities.
>>
>>
>> And another thing, while technically this is a 'practical' 
>> application and a very important one to boot, the last time I had to 
>> generate quantum error-correcting codes was, hmmm, let me see...oh 
>> that's right, NEVER!
>>
>> <tangent>What'­s the phrase I'm looking for?  "Practical examples" or 
>> "practical applications" to mathematicians apparently means *any* 
>> application such as "quantum error-correcting codes". To the layman, 
>> that's not "practical".  I'm not looking for an example of late 
>> Dirichlet allocation that I can use in the woodshop but I can look 
>> around me and see practical applications of Faraday's Laws (why do 
>> some wall outlets spark when you pull the plug?) , Pasteur's Germ 
>> Theory (the importance of clean water), Computer Science (the overly 
>> complicated Turing Machine that I'm typing on) and even calculus 
>> (compound interest).  But of group theory? </tangent>
>>
>> And before that guy in the last row takes my statements too far, let 
>> me state for the record, no I don't think every statememnt in higher 
>> mathematics needs a practical, everyday application that you can 
>> point out to a four year old.
>>
>> -- 
>>
>> Faber Fedor
>> Linux New Jersey
>> http://linuxnj.co...­
>> faberfedor.blogspot.­com <http://faberfedor...;­
>>
>>
>>
>>
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>
>
>
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