Home   Curriculum Vitae (IT)   Curriculum Vitae (EN)   List of Publications   Didattica   Erdös Number   Snapshots    Erdös Number     I have Erdös number 4 with multiplicity at least 6.    http://www.ams.org/mathscinet/              Free Tools Collaboration Distance          Author Name        Facchini, Alberto        Use Erdös     David Hilbert and Bill Gates also have Erdös number 4.