Re: New <AREA> syntax proposal

Jeff de la Beaujardiere (
Tue, 10 Jun 1997 10:33:36 -0400

Date: Tue, 10 Jun 1997 10:33:36 -0400
Message-Id: <>
From: Jeff de la Beaujardiere <>
In-reply-to: <> (message from Colin F Reynolds on
Subject: 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  But I digress...


  = J-F Pitot de La Beaujardiere