Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!apple!motcsd!xdos!doug
From: doug@xdos.UUCP (Doug Merritt)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Maps & mathematics (Was: Re: Clicking on Irregular Shape)
Message-ID: <436@xdos.UUCP>
Date: 28 Jul 89 15:48:03 GMT
References: <635967196@hpindwa.HP.COM> <387100007@S41.Prime.COM> <26691@agate.BERKELEY.EDU>
Reply-To: doug@xdos.UUCP (Doug Merritt)
Organization: Hunter Systems, Mountain View CA (Silicon Valley)
Lines: 18

In article <26691@agate.BERKELEY.EDU> mwm@eris.berkeley.edu (Mike (I'll think of something yet) Meyer) writes:
>In article <387100007@S41.Prime.COM> CIS@S41.Prime.COM writes:
><Indeed.  What makes the geo map of the US not a mathematical map?
>
>Hmm. A map in mathematics is a function that takes elements from one
>set to a second set. Somehow, I don't see how any geographical map can
>do that.

But it does. The first set is the surface physical world, the second set is
the collection of bordered, colored regions on the piece of paper.
Remember that the name "map" in mathematics originated from
considerations of real world problems.

The rest of your article was very clear, nicely written.
	Doug
-- 
Doug Merritt		{pyramid,apple}!xdos!doug
Member, Crusaders for a Better Tomorrow		Professional Wildeyed Visionary