University of Rostock, Institute of Mathematics, 2005
https://doi.org/10.18453/rosdok_id00005890
Abstract: We present a version of the orthogonality relations for group characters which appears to be new - at least in this generality. The proof given uses only Maschke's theorem and Schur's lemma. Among other consequences, Burnside's result on the existence of zeros for non-linear irreducible characters is generalized.
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