VStefanZnam 2006-06-12 18:14:56 2006-11-02 18:26:34 Definition % this is the default PlanetMath preamble. as your knowledge % of TeX increases, you will probably want to edit this, but % it should be fine as is for beginners. % almost certainly you want these \usepackage{amssymb} \usepackage{amsmath} \usepackage{amsfonts} % used for TeXing text within eps files %\usepackage{psfrag} % need this for including graphics (\includegraphics) %\usepackage{graphicx} % for neatly defining theorems and propositions %\usepackage{amsthm} % making logically defined graphics %\usepackage{xypic} % there are many more packages, add them here as you need them % define commands here Slovak mathematician and mathematics professor, (February 9, 1936 - July 17, 1993), posed Zn\'am's problem. His Erdős number is 2 by at least six different paths. For example, in 1968, Znám wrote a paper on "Strongly geodetic graphs" with Juraj Bosák in the {\it Journal of Combinatorial Theory}. Three years later, Bosák co-authored "Decompositions of complete graphs into factors with diameter two" with Erdős and Alexander Rosa in {\it Mathematics Casopis Slovene Akademie Vied}.