Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site dalcs.UUCP Path: utzoo!watmath!clyde!burl!ulysses!unc!mcnc!decvax!dartvax!dalcs!holmes From: holmes@dalcs.UUCP (Ray Holmes) Newsgroups: net.ai Subject: Re: Four color... Message-ID: <610@dalcs.UUCP> Date: Fri, 17-Feb-84 00:33:46 EST Article-I.D.: dalcs.610 Posted: Fri Feb 17 00:33:46 1984 Date-Received: Sat, 18-Feb-84 03:04:20 EST References: <1290@mit-eddie.UUCP> Organization: Dalhousie U, Halifax N.S. Lines: 6 [] The four colour problem is the same for a sphere as it is for the infinite plane. The problem for a torus was solved many years ago. The torus needs exactly 7 colours to paint it. Ray