G.Keady's Erdos number is (at most) 4: 0 1 2 3 4 Erdos - Reznick,B,A. - Fitzpatrick,S. - Calvert,B. - Keady,G. Erdos - Reznick,B,A. - Fitzpatrick,S. - Dragomir,S. - Keady,G. Erdos - Caccetta, L - Wang, S - Dragomir,S. - Keady,G. (I have a Maple review with Simon Fitzpatrick, but doesn't really count. Rules for calculating Erdos numbers are papers listed in Maths Reviews.) People at UWA Maths with Erdos numbers smaller than mine: Vijayan 1 Fitzpatrick 2 Praeger 2 Wang 2 M.J. Hood 3 (has a joint paper with Simon Fitzpatrick) Erdos numbers of other co-authors with me Nev Fowkes 4 L.E. Fraenkel 4 John Norbury 4 Alex McNabb 4 Others at UWA Andrew Bassom 4 Des Hill 4 Kevin Judd 4