International Journal of Mathematics and Mathematical Sciences 
Volume 2006 (2006), Article ID 91267, 21 pages
doi:10.1155/IJMMS/2006/91267

On λ-rings and topological realization

Donald Yau

Department of Mathematics, The Ohio State University Newark, 1179 University Drive, Newark 43055, OH, USA

Received 19 July 2005; Accepted 12 April 2006

Abstract

It is shown that most possibly truncated power series rings admit uncountably many filtered λ-ring structures. The question of how many of these filtered λ-ring structures are topologically realizable by the K-theory of torsion-free spaces is also considered for truncated polynomial rings.