Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!cmcl2!floyd!whuxlb!pyuxll!eisx!npoiv!npois!hogpc!houxm!5941ux!dje From: dje@5941ux.UUCP Newsgroups: net.math Subject: Re: infinity = -1 Message-ID: <413@5941ux.UUCP> Date: Wed, 21-Sep-83 13:24:46 EDT Article-I.D.: 5941ux.413 Posted: Wed Sep 21 13:24:46 1983 Date-Received: Thu, 22-Sep-83 05:19:17 EDT References: mhuxj.380 Lines: 15 Response to the paradox of: x = 1 + 2 + 4 + 8 + ... = 1 + 2 * (1 + 2 + 4 + ...) = 1 + 2 * x implying x = -1. The series (1 + 2 + 4 + ...) doesn't sum to any real number, so saying that "x = 1 + 2 * x" doesn't give you the license to infer that x = -1. If you try to tinker with "infinite" quantities as if they were numbers, then you can get all kinds of inconsistent "equalities" like x = x + 1 as well. Dave Ellis / Bell Labs, Piscataway NJ ...!{hocda,ihnp4}!houxm!houxf!5941ux!dje ...!floyd!vax135!ariel!houti!hogpc!houxm!houxf!5941ux!dje