A New Action of the Kudo-araki-may Algebra on the Dual of the Symmetric Algebras, with Applications to the Hit Problem
نویسندگان
چکیده
The hit problem for a cohomology module over the Steenrod algebra A asks for a minimal set of A-generators for the module. In this paper we consider the symmetric algebras over the field Fp, for p an arbitrary prime, and treat the equivalent problem of determining the set of A∗-primitive elements in their duals. We produce a method for generating new primitives from known ones via a new action of the Kudo-Araki-May algebra K, and consider the K-module structure of the primitives, which form a sub K-algebra of the dual of the infinite symmetric algebra. Our examples show that the K-action on the primitives is not free. Our new action encompasses, on the finite symmetric algebras, the operators introduced by Kameko for studying the hit problem. We also note connections to the Singer transfer.
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