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Re: decimal point/comma (was conplaneteering)

From:scott <sjcaldwell@...>
Date:Friday, February 18, 2005, 13:44
On Feb 18, 2005, at 3:19 AM, Geoff Horswood wrote:

>> Mark J. Reed wrote: >>> Which reminds me - where did the × and ÷ symbols come from? > 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...
Yep. x and ÷ (obelus) were used in the 1600s, IIRC. Gee, I'm finally getting use out of my Bachelor of Mathematics. :-) gives some history on the symbols of operation if you are interested. scott


Mark J. Reed <markjreed@...>