Endomorphism Algebras

Abstract

This chapter is devoted to some results on the endomorphism algebra ${\rm End}_{\mathcal{R},\mathcal{D}}$(G) of an object G of $\mathcal{D}$. Since $\mathcal{D}$ is a full subcategory of the biset category, it follows that for any objects G and H of $\mathcal{D}$

$$ {\rm Hom}_{\mathcal{R}\mathcal{D}} \left( {G,H} \right) = RB\left( {H,G} \right). $$