T.H. Ray
Posts:
1,107
Registered:
12/13/04
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Re: Sixth grade math
Posted:
Feb 5, 2010 11:50 AM
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MoeBlee wrote
> On Feb 5, 6:10 am, "T.H. Ray" <thray...@aol.com>
> wrote:
>
> > The informal explanation does not contradict the
> formal
> > description of a function as a single valued total
> > relation between sets
>
> The various informal explanations are incompatible
> with the formal set
> theoretical definition, each in at least one
> important sense, which
> has been discussed over and over again already in
> this thread.
>
> MoeBlee
>
>
>
We may have different ideas of what constitutes an
important sense.
Speaking only for my own characterization, I find no
conflict between the set theoretic definition and
mine. Granted, the formal definition incorporates
both necessary and sufficient conditions, while I give
only a sufficient condition. However, what is
sufficient for a 12 year old will not obviate her
search for the necessary, should she have the ambition.
Tom
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