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RE: Undefined behaviour (Was: Definition of intervals as subsets...)



Vladik Kreinovich wrote:
> The explanation is simple: in Kaucher arithmetic, the interval ?5,2Ù
> DOES NOT mean {x: 5<= x <=2}, this interpretation would lead to an
> empty set.

That's not how Dan interpreted it; he wrote:
>>   Can it really be that the sum of {x | 5 <= x or x <= 2} ...

Note the OR, not AND.  He interprets it as the union of two
disjoint intervals  [-oo,2] U [5,+oo].

Michel.
Sent: 2009-03-16 20:04:41 UTC