@ARTICLE {, title = {Iracionálne čísla ako výsledok limitného procesu}, author = {Gunčaga, Ján}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2006}, volume = {35}, number = {1}, pages = {1--8}, issn = {1335-4981}, abstract = {This paper deals with number √2 , the length of diagonal in the unit square side 1. Ancient Greek mathematicians approached this problem via geometrical models. We describe some models using the computer program or calculator. }, }