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Principal indecomposable characters and normal subgroups.

Reynolds, William F.

1986.

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We present an analogue of Clifford's tensor-factorization theorem for principal indecomposable (projective indecomposable) characters, i.e. the Brauer characters afforded by indecomposable projective modules over group algebras over splitting fields of prime characteristic and discuss some related results.

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Reynolds W.F. (1986) Principal indecomposable characters and normal subgroups. In: Dlab V., Gabriel P., Michler G. (eds) Representation Theory II Groups and Orders. Lecture Notes in Mathematics, vol 1178, 143-151. Berlin, Heidelberg: Springer. https://doi.org/10.1007/BFb0075294.