[Fis]: Re: Distribution of Energy is (not) the same as disorder?

To: "fis-listas.unizar.es" <fis@listas.unizar.es>
Subj: [Fis]: Re: "Distribution of Energy is (not) the same as "disorder"?

Dear Shu-Kun, Stan, and FISers,

Stan said:
> ... As I
> was reading Jerry's posting, I spontaneously translated his "distribution"
> into 'dispersion'.
> ...

That's OK for me. In descriptive statistics, the dispersion is
sometimes used in place of 'standard deviation', or, in the
multivariate case, is related to the inertia (trace of variance
matrix; in mechanics, multiply by the total mass).
Standard deviation and inertia have rigorous definitions from
distribution theory. So, if a distribution is exhibited, the
dispersion exists when the 2-order moment(s) are finite.
If no distribution is exhibited, we need an other definition
for dispersion.

Shu-Kun proposed:
> An International Treaty on the Definition of
> "Disorder" should be created to define "discorder",
> "information", 'symmetry", "entropy", etc...

Here is the task group: the FISers (already working...)

Michel Petitjean Email: petitjean@itodys.jussieu.fr
Editor-in-Chief of Entropy entropy@mdpi.org
ITODYS (CNRS, UMR 7086) ptitjean@ccr.jussieu.fr
1 rue Guy de la Brosse Phone: +33 (0)1 44 27 48 57
75005 Paris, France. FAX : +33 (0)1 44 27 68 14
http://www.mdpi.net/entropy http://www.mdpi.org/entropy
http://petitjeanmichel.free.fr/itoweb.petitjean.html
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Received on Mon Sep 13 10:50:17 2004