Subject: Re: two postings From: "Nicholas J. Kuhn" Date: Wed, 04 Jan 2006 11:23:40 -0500 > Subject: query > From: jim stasheff > Date: Tue, 03 Jan 2006 16:59:52 -0500 > > Has anyone ever looked at deformations of the Steenrod algebra? > e.g. deforming the Adem relations but keeping Cartan? > > jim This is studied in Jeanne Duflot's paper `Lots of Hopf Algebras', J. Algebra 204 (1998), 69--94. I'd also take a look at papers of Reg Wood. Nick Kuhn