Erdös Numbers

The Erdős number describes the "collaborative distance" between mathematician Paul Erdős and another person

Oakland University has a site on Erdös numbers, including on how to compute your own Erdös Number

Mine is 4, via a few different paths (yes, OK, I confess---it's one paper with Chawla, Ravi, and Sinha that gives rise to all of the paths) .

• Paul Erdös -- Béla Bollobás -- Christian Borgs -- Ramamoorthi Ravi -- Uday Rajan

• Paul Erdös -- Miklós Ajtai -- Cynthia Dwork -- Shuchi Chawla -- Uday Rajan

• Paul Erdös -- Noga Alon -- Joseph Naor -- Amitabh Sinha -- Uday Rajan