Photos

Topology and its Applications 156 (2009) 2548

Contents lists available at ScienceDirect

Topology and its Applications www.elsevier.com/locate/topol

Photos

Neil Hindman is aged 65 . . .

. . . and βN is 72.

Photos by Bonita Parker.

0166-8641/$ – see front matter doi:10.1016/j.topol.2009.05.009

© 2009 Published by

Elsevier B.V.