:) OK, OK. It makes sense in infinitesimal analysis (which came out of topos theory) too. But if you start switching number systems all bets are off.

Thanks for the pointer to surreal numbers.

FWIW, my booklist contains a good descriptive book on infinitesimal analysis.

In reply to Re: Re (tilly) 3 .999999... == 1? (Somewhat OT) by scott
in thread .999999... == 1? (Somewhat OT) by Sherlock

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