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* Elementary concepts of map objects
@ 2009-05-08 17:41 PETER EASTHOPE
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From: PETER EASTHOPE @ 2009-05-08 17:41 UTC (permalink / raw)
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In light of the recent discussion here about
the "horizontal line notation", I've returned
to the introduction to map objects in L. & S.,
_Conceptual Mathematics_.  This statement is
in the rectangle at the top of page 314.

( Script.ChangeFont Courier8 )

     T   e                 X ----> Y
T x Y  ----> Y  induces  -------------
                         T x X ----> Y

Evaluation map e induces a "correspondence".

Is this horizontal line an implication or
an equivalence or a map or a bijection?

"Induces" seems plausible but exactly what
is meant?

Thanks,          ... Peter E.




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