On 2016-09-17, at 10:25, Jesse 1 Robinson wrote:
>
> There is at least one other 'infinity' that is larger than Aleph-null: the
> set of all real numbers between any two arbitrary points, dubbed
> Aleph-sub-one. So the number of real numbers between zero and one or between
> 1 and 1000000 are both represented as Aleph-sub-one.
>
Perhaps:
https://en.wikipedia.org/wiki/Aleph_number#Continuum_hypothesis
The cardinality of the set of real numbers (cardinality of the continuum) is
2^0ℵ. It cannot be determined from ZFC (Zermelo–Fraenkel set theory with the
axiom of choice) where this number fits exactly in the aleph number hierarchy,
... (TMI) ...
> How this relates to z systems I don't know. Just showing off what I remember
> from a hundred years ago. ;-)
IEEE provides for NaN. It's pretty hard to assign a meaningful sign to ∞ - ∞.
-- gil
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