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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!math.ksu.edu!deadend
- From: jxh@math.ksu.edu (James C. Hu)
- Newsgroups: sci.math
- Subject: Re: Non-number theoretcial proofs in number theory
- Date: 21 Jan 1993 04:29:36 -0600
- Organization: Dept. of Mathematics, Kansas State University
- Lines: 26
- Message-ID: <1jltugINNq3p@hilbert.math.ksu.edu>
- References: <C15H03.A3q@cs.bham.ac.uk>
- NNTP-Posting-Host: hilbert.math.ksu.edu
-
- ard@cs.bham.ac.uk (Antoni Diller) writes:
-
- >It's years since I've done any proper maths, but what I'm after are
- >examples of proofs of statements about the natural numbers or integers
- >that use ideas and methods external to number theory, like for example
- >results from the theory of complex numbers. Ideally I'd like an example
- >which is such that no proof only involving natural numbers or integers
- >is known. A reference to a good textbook would be acceptable.
- >Please reply by email and I'll post any good examples.
-
- How about the proof to:
- If p a positive prime and p = 1 (mod 4), then p is the sum of
- two square integers.
-
- I believe it's proof uses Gaussian Integers, but I seem to recall an
- alternate proof without them too ... (using Minkowski's? I can't
- remember ...).
-
- But you would find many results applicable if the tools of the proof
- are limited to the natural numbers or integers alone (for example, the
- prime number theorem: the number of primes not exceding x is
- asymptotic to x/ln(x)).
-
- --
- James C. Hu (jxh@math.ksu.edu), 1804 Denholm Dr., Manhattan, KS 66502
- I speak for me, the whole me, and nothing but for me. So help me me.
-