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Re: New <AREA> syntax proposal


Colin F Reynolds writes:
> Don't most area maps use four colo(u)rs, that being the maximum number of
> colors required to assure that no two adjacent regions bear the same
> color?

Four is the *minimum*, which is probably what you meant to write.
Interestingly, this conjecture took over a century to prove, and the
proof requires an entire book (see
http://www.math.utah.edu/~alfeld/math/4color.html).  But I digress...

--Jeff

  = J-F Pitot de La Beaujardiere
  = delabeau@iniki.gsfc.nasa.gov
  = http://globe2.gsfc.nasa.gov/
References: