Re: I have correct proof of 4-color theorem


cuishitai@xxxxxxxxx wrote:
> The only correct, simple and elegant proof of
> the 4-color theorem [...]

I can stop reading right here, because you're a crank. In fact, I could
have stopped at the first word ("the") because there are many proofs of
a result. (A few dozen of the Pythagorian Theorem, for instance.)

If you claim you have _a_ correct, elegant proof of the 4CT, feel free
to post it, though. Just as long as you're not saying that it's
impossible for five regions to share a common boundary edge. (The
5-regions result was proved in 1840 by Augustus Moebius, before the
history of the 4CT, and is a RESULT of the 4CT, but it doesn't PROVE
it.)

--- Christopher Heckman,
who is in the acknowledgement section of
Robertson/Sanders/Seymour/Thomas's 4CT proof.

.

Quantcast