###
Erdös number of Joris Van der Jeugt

Most mathematicians are familiar with the definition of one's
Erdös
number. Paul Erdös, the Hungarian mathematician of the highest
caliber,
wrote hundreds of papers in many different areas, many in collaboration
with others. His Erdös number is 0. His co-authors have Erdös
number 1. People other than Erdös who have written a joint paper
with
someone with Erdös number 1 but not with Erdös himself have
Erdös
number 2, and so on. See the collaboration
graph of some famous mathematicians.
The Erdös
Number Project Web site gives much information about all this.

(1997) I think that my own Erdös number is currently 4; in fact
there
are many paths of length 4 in my collaboration graph. One such path is:

Joris VAN DER JEUGT

Jiri PATERA

Hans J. ZASSSENHAUS

Ronald L. GRAHAM

Paul ERDOS

(2006) Somebody told me that my Erdös number is now 3, due to
the path:

Joris VAN DER JEUGT

Veerle FACK

Brendan D. MCKAY

Paul ERDOS

*Joris Van der
Jeugt
March 2006 *