Ralph Baker Kearfott schrieb:
Arnold et al,
Please see my inserted comments.
Baker
On 2/23/2009 11:22 AM, Arnold Neumaier wrote:
Siegfried M. Rump schrieb:
(1) For a given function F, for example, X=F(interval(A.sup)) should
give an
inclusion of the value of F at the right bound of A.
Always???
This value is not even properly defined in many cases,
such as when F(x)=x-x or F(x)=(x-1)/(x+1) and A=[0,inf].
This was spoken in terms of established practice in the
mathematical community at large. I find it extermely important
that we do not create sectarian deviations from very established
practices.
We can change with the standard the practice of interval computation,
but not the practice of mathematics.