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Re: decimal point/comma (was conplaneteering)

From:Geoff Horswood <geoffhorswood@...>
Date:Friday, February 18, 2005, 8:19
On Tue, 15 Feb 2005 14:16:04 -0600, Phil Bordelon
<phil@...> wrote:

>Mark J. Reed wrote: > >> Which reminds me - where did the × and ÷ symbols come from? Everyone >> learns them in early grades, and they show up as labels on calculator >> keys, but they're never used in actual mathematics notation . . . > >I'm certainly not an expert on, um, anything, but I'd venture to guess >that ÷ is a fraction, with dots representing the locations the two >numbers would go. > >> -Marcos > >Phil
I'm no mathematician, but I always assumed that × used to be the conventional multiplication sign up until the advent of computers, when it was replaced by * to avoid confusion with x. But thinking about it again, that can't be right, as people were doing algebra long before there were computers... [confused look] Geoff


scott <sjcaldwell@...>
Mark J. Reed <markjreed@...>