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Topic: Re: In "square root of -1", should we say "minus 1" or "negative
1"?

Replies: 1   Last Post: Dec 6, 2012 12:32 AM

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Joe Niederberger

Posts: 2,923
Registered: 10/12/08
Re: In "square root of -1", should we say "minus 1" or "negative
1"?

Posted: Dec 5, 2012 3:46 PM
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GS Chandy says:
>Rather late in the day (I'm sure), I must confess that I do not 'get' what you mean by the 'Martinez road'.

Author of "Negative Math":
http://www.amazon.com/Negative-Math-Mathematical-Rules-Positively/dp/0691123098

He simply shows that the algebra we learn in school is not the only possibility -- more a philosophical point than practical.
Regarding the business of why (-) x (-) = (+), the answer in this book is "well, that's a choice, there are other possibilities," and he begins to explore that a bit.
Obviously its not a bad choice, but people have been confused for eons thinking it should be more obvious somehow (of course it can be "proved" as well, given you accept certain other axioms.) Not quite at the level of math infamy as the fifth postulate, but along those lines.

>Indeed, Mazur's 'virtuous circles' ("virtuous cycles", I would believe) are only a (relatively small) portion of 'deeper understanding:

I was too hard in my words, its a good discussion in "Imagining Numbers", but he never points out the other possibilities.

Cheers,
Joe N



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