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From: gross@spp2.UUCP (Howard E. Gross)
Newsgroups: net.math
Subject: weird functions
Message-ID: <445@spp2.UUCP>
Date: Thu, 21-Feb-85 16:56:19 EST
Article-I.D.: spp2.445
Posted: Thu Feb 21 16:56:19 1985
Date-Received: Thu, 28-Feb-85 12:31:33 EST
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A slight modification of the function I posted:        

Let g be a one-to-one map of the rationals to the positive integers.
Let f(x) = 1/g(x) if x is rational, f(x) = 0 otherwise.
Where is f continuous?

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 gross (Howard Gross)	{decvax,hplabs,ihnp4,sdcrdcf}!trwrb!trwspp!spp2