Date: Dec 6, 2012 12:51 PM
Author: Robert Hansen
Subject: Re: In "square root of -1", should we say "minus 1" or "negative 1"?
On Dec 6, 2012, at 12:03 PM, Joe Niederberger <firstname.lastname@example.org> wrote:
> He (Martinez) didn't, so what is it? Keep addition as is, but be willing to change the usual rules of multiplication in order to impose the new sign rule: (-) x (-) = (-).
He seems to have invented something altogether different than the "sign" we know. So I don't think it is correct to compare "rules" just because the two systems use the same symbol. In his system, the minus sign would equate to what we call "i".