Barker, Laurence2025-02-212025-02-212024-120021-8693https://hdl.handle.net/11693/116562A pointed p-group is a pointed group P gamma such that Pis a p-group. We parameterize the pointed p-groups on a group algebra or on a block algebra of a group algebra. This is equivalent to a parameterization of the isomorphism classes of indecomposable direct summands of the algebra as a bimodule with the group acting on the left and a p-subgroup acting on the right. The parameterization involves p-subgroups and irreducible characters of centralizers of p-subgroups.EnglishCC BYhttps://creativecommons.org/licenses/by/4.0/Puig categoryRelative multiplicityPointed p-groupGeneralized pieceThe pointed p-groups on a block algebraArticle10.1016/j.jalgebra.2024.11.0191090-266X