Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!genrad!panda!talcott!wjh12!foxvax1!brunix!browngr!jfh From: jfh@browngr.UUCP (John "Spike" Hughes) Newsgroups: net.math Subject: Re: Re: Non-linear systems: discontinuous functions Message-ID: <1860@browngr.UUCP> Date: Wed, 13-Feb-85 21:24:24 EST Article-I.D.: browngr.1860 Posted: Wed Feb 13 21:24:24 1985 Date-Received: Mon, 18-Feb-85 04:46:26 EST References: pucc-i.887, <209@talcott.UUCP> <328@rlgvax.UUCP> <384@hou2g.UUCP> <1027@sunybcs. Lines: 9 If you are willing to consider non-standard analysis, the delta function can be defined as being infinity at 0 and 0 elsewhere, with an integral that is in the monad of 1 (i.e. differs from 1 by an infinitesimal). This makes perfect sense, in an odd sort of way. See E. Nelson on Non-Standard Anaylsis in the Bulletin of the Amer. Math. Soc., about 2-4 years ago (sorry about the vague reference). Write to me for further info. -jfh