Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ucsfcca.UUCP Path: utzoo!linus!decvax!decwrl!ucbvax!ucsfcgl!ucsfcca!dick From: dick@ucsfcca.UUCP (Dick Karpinski) Newsgroups: net.math.symbolic Subject: Laws of Form (G. Spencer-Brown) Message-ID: <418@ucsfcca.UUCP> Date: Mon, 28-Oct-85 20:58:11 EST Article-I.D.: ucsfcca.418 Posted: Mon Oct 28 20:58:11 1985 Date-Received: Fri, 1-Nov-85 00:18:15 EST Distribution: net Organization: UCSF Computer Center Lines: 15 Is anyone besides William Bricken doing any computer work with the Laws of Form by G. Spencer-Brown. This book is not too hard to follow, but understanding what you have got is another matter entirely. This is the arithmetic of indications said to underlie (and extend) things like Boolean algebra. It claims to rehabilitate (or perhaps, just to habilitate) a notion of imaginary truth values analogous to imaginary numbers. Any info/hints/flames welcome. Dick -- Dick Karpinski Manager of Unix Services, UCSF Computer Center UUCP: ...!ucbvax!ucsfcgl!cca.ucsf!dick (415) 666-4529 (12-7) BITNET: dick@ucsfcca Compuserve: 70215,1277 Telemail: RKarpinski USPS: U-76 UCSF, San Francisco, CA 94143