Štefan Znám
Slovak mathematician and mathematics professor, (February 9, 1936 - July 17, 1993), posed Znám’s problem.
His ErdÃ
âs 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 Journal of Combinatorial Theory. Three years later, Bosák co-authored ”Decompositions of complete graphs into factors with diameter two” with ErdÃ
âs and Alexander Rosa in Mathematics Casopis Slovene Akademie Vied.