Thévenaz, JacquesWebb, Peter J.2008-12-162008-12-162008-12-16199510.2307/2154915https://infoscience.epfl.ch/handle/20.500.14299/32732blocksfinite groupscategory of finite $G$-setsdiagrams of $G$-setscategory of Mackey functorscategory of modulespath algebrasquiver with relationscomposition factorsCartan matricesdecomposition matricesBurnside ringsprojective Mackey functorsorthogonal idempotents$p$-perfect subgroupsverticessourcesGreen correspondents$p$-groupsindecomposable projective Mackey functorssource modulesHecke algebrasrestrictioncorestrictiongroup cohomologyfinite representation typeBrauer treestext::journal::journal article::research article