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Topic: From Fermat little theorem to Fermat Last Theorem
Replies: 62   Last Post: Mar 14, 2013 9:59 PM

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Pubkeybreaker

Posts: 1,394
Registered: 2/12/07
Re: From Fermat little theorem to Fermat Last Theorem
Posted: Nov 29, 2012 12:15 PM
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On Wednesday, November 28, 2012 3:07:56 PM UTC-5, quasi wrote:
> John Jens wrote: >Corrections was made. > >It's sufficient that only a < p. But you never _proved_ the inequality a < p, so you don't get to use it. Moreover, the equation a^p + b^p = c^p with the restrictions a,b,c positive integers p prime does not imply min(a,b) < p. To see this, just use p = 2 with a,b,c = 3,4,5. You tried to argue that you can't have p=2 since the inequality min(a,b) < p would then force min(a,b) = 1, leading to an easy contradiction. But you can't use the inequality min(a,b) < p without proving it, and the example p = 2 with a,b,c = 3,4,5 makes it clear that you can't prove it. quasi


A global remark:

It was demonstrated a number of years ago that FLT can not be proved
by modular considerations such as the one presented by the O.P.

The reason is as follows: The Hasse-Minkowski theorem that allows diophantine
analysis over a local field (such as Z/pZ) to be lifted to a global field
(such as Q) is blocked for FLT by the fact that SHA (The Tate-Sharfarevic
group) is non-trivial except in the case n = 4 (which is also why descent
argument works for n = 4). It is similar to the Brauer group obstruction
that prevents Abelian Varieties over local fields from being lifted to Q.

(I realize that the level of the discussion has been raised to the research
level of algebraic geometry; which, of course, is what Wiles used to
prove the thoerem)


Date Subject Author
11/27/12
Read From Fermat little theorem to Fermat Last Theorem
John Jens
11/27/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
11/27/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/27/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
11/27/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Pubkeybreaker
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Frederick Williams
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
David Bernier
11/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Stemper
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Ki Song
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
gus gassmann
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Ki Song
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
11/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Pubkeybreaker
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
11/28/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/1/12
Read Re: From Fermat little theorem to Fermat Last Theorem
vrut25@gmail.com
12/2/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/2/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/2/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
J. Antonio Perez M.
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/5/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/5/13
Read Re: From Fermat little theorem to Fermat Last Theorem
J. Antonio Perez M.
1/5/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/6/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
1/6/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/6/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Pubkeybreaker
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Bart Goddard
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Michael Klemm
3/7/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Brian Q. Hutchings
3/14/13
Read From Fermat little theorem to 'la theoreme "dernier" du Fermat -- and
the next one'
Brian Q. Hutchings
12/29/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/31/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/31/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
12/31/12
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
1/2/13
Read Re: From Fermat little theorem to Fermat Last Theorem
Brian Q. Hutchings
1/4/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
1/4/13
Read Re: From Fermat little theorem to Fermat Last Theorem
quasi
1/4/13
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Pubkeybreaker
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
John Jens
12/30/12
Read Re: From Fermat little theorem to Fermat Last Theorem
Pubkeybreaker
11/27/12
Read Re: From Fermat little theorem to Fermat Last Theorem
wheretogo

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