Hi all,

I have a good news.

I have started a Romanian article about Species in Wikipedia :

http://ro.wikipedia.org/wiki/Specii_de_numereThe title is "Number Species".

By vulgarisation, a species becomes in my article a multiset of permutation groups.

**Q:** Then, why an article about species, and not an article about permutation groups ?

**A:** 1) The Theory of Species adds combinatorial

*meaning *and more ; it is not just equivalent to the theory of permutation group.

2) The Theory of Species offers a

*systematical description* of many combinatorial objects.

3) The Theory of Species offers a tool,

*the e.g.f.*, to quickly obtain numerical results on combinatorial questions.

4) The Theory of Species offers a foundation for the rigurous meaning of the gramatical preposition OF.

5) The Theory of Species open a generalisation - at the same level of understanding of cardinal and ordinal numbers

and so on....

6) Computer Scientists need a simplified approach rather then a sophisticated algebraical one.

7) Ingineers need a simplified explanation of what field (line), group (vector space) and what "degree" of liberty could means.

and so on...

I use French as metalanguage as well as diagrams.

I am also planning to insert combinatorial definitions whereever is possible