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From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2008-03-14 11:29:39


On Fri, Mar 14, 2008 at 3:50 PM, Eric Niebler <eric_at_[hidden]> wrote:
>
> Martin Bonner wrote:
> > ??
> > The New Collins Concise English Dictionary (1982) by my desk has:
> >
> > Negate: 1. to nullify; invalidate. 2. to contradict
> >
> > Posit: 1. to assume or put forward as fact or the factual basis for an
> > argument. 2. to put in position.
> >
> > I don't really see how you can say that "to posit" is the opposite of
> > "to negate".
>
> ??
> "To put forward as fact" seems like the opposite of "to contradict" to
> me. One says, "it's true!" The other, "it's false!"
>
> The only other term that I have found that is acceptable for the unary
> plus operator is "unary_plus." That just seems so ... boring. ;-) And a
> little strange to have "negate" and "unary_plus". Blech.
>
> Is there a mathematician who can tell me if the operation performed by
> the unary plus operator has a name?
>

What about identity? ;)

just-kidding-ly-yours,

-- 
gpd

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