On Nichols algebras over SL(2,Fq) and GL(2,Fq).

We compute necessary conditions on Yetter-Drinfeld modules over the groups SL(2,Fq) and GL(2,Fq) to generate finite dimensional Nichols algebras. This is a first step toward a classification of pointed Hopf algebras with a group of grouplikes isomorphic to one of these groups. [ABSTRACT FROM AUTHOR]