[FOM] Only one proof

Timothy Y. Chow tchow at alum.mit.edu
Mon Aug 31 17:57:26 EDT 2009

Joe Shipman wrote:
>I am interested in important theorems which, long after they are 
>discovered, have "essentially" only one proof.

There is essentially only one proof of Deligne's Theorem (formerly the 
Weil Conjecture).  Grothendieck's plan of proving them via his "standard 
conjectures" remains unfulfilled.


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