English

On $P$-algebras and their duals

Algebraic Topology 2022-12-07 v2 Rings and Algebras

Abstract

The notion of PP-algebra due to Margolis, building on work of Moore and Peterson, was motivated by the case of the Steenrod algebra at a prime and its modules. We develop aspects of this theory further, focusing especially on coherent modules and finite dimensional modules. We also discuss the dual Hopf algebra of PP-algebra and its comodules. One of our aims is provide a collection of techniques for calculating cohomology groups over PP-algebras and their duals, in particular giving vanishing results. Much of our work is implicit in that of Margolis and others but we are unaware of systematic discussions in the literature. We give some examples illustrating topological applications which follow easily from our results.

Keywords

Cite

@article{arxiv.2205.09541,
  title  = {On $P$-algebras and their duals},
  author = {Andrew Baker},
  journal= {arXiv preprint arXiv:2205.09541},
  year   = {2022}
}

Comments

Minor changes, corrections and improvements. arXiv admin note: substantial text overlap with arXiv:2103.01253

R2 v1 2026-06-24T11:22:16.404Z