Abstract
Let p>2 be a prime, R=Zp[ζpf−1], K=Qp[ζpf−1], and G=SL2(pf). The group ring RG is calculated nearly up to Morita equivalence: The projections of RG into the simple components of KG are given explicitly and the endomorphism rings and homomorphism bimodules between the projective indecomposable RG-lattices are described.
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