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- From: patl@athena.mit.edu (Patrick J. LoPresti)
- Subject: Re: Cryptography and P=NP
- Message-ID: <1992Nov22.171847.27106@athena.mit.edu>
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- Organization: Massachusetts Institute of Technology
- References: <15115@ember.UUCP> <Nov.16.16.59.47.1992.6436@remus.rutgers.edu> <1992Nov17.043640.5525@CSD-NewsHost.Stanford.EDU>
- Date: Sun, 22 Nov 1992 17:18:47 GMT
- Lines: 29
-
- (My apologies if this shows up twice. An earlier reply never appeared
- at my site.)
-
- In article <1992Nov17.043640.5525@CSD-NewsHost.Stanford.EDU> pratt@Sunburn.Stanford.EDU (Vaughan R. Pratt) writes:
- >
- >If one perturbs the definition of primality slightly while retaining
- >its basic statistical characteristics (mean, variance) then one can
- >actually prove such theorems as "There are infinitely many twin primes"
- >and "Every even number > 3 is the sum of two primes" (Goldbach's
- >conjecture) without much difficulty. (I believe "lucky" numbers
- >provide an instance of this general principle.) In these proofs the
- >statistical evidence is overwhelming, encouraging one to assign
- >extraordinary odds to the failure of Goldbach's conjecture.
- >
- [stuff deleted]
- >
- >There is *no* comparable statistical evidence for either P=NP or
- >P!=NP. The evidence to date for P!=NP is that a lot of people have
- >looked for a fast algorithm for the generic NP problem and failed.
- [more stuff deleted]
-
-
- Isn't it true that, with respect to a random oracle, P!=NP with
- probability 1?
-
- How does this "statistical" evidence differ from your example
- regarding the Goldbach conjecture?
-
- - Pat
-