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Research Journal of Applied Sciences

ISSN: Online 1993-6079
ISSN: Print 1815-932x
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The Representation of Real Characters of Finite Groups

H.S. Ndakwo
Page: 372-376 | Received 21 Sep 2022, Published online: 21 Sep 2022

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Abstract

Let A(x) be the representation of an element x in a group G. The representation A(x) may be real or complex. The aim of this study is to distinguish when the character of A(x) is real and when it is not. This distinction is linked with the notion of bilinear invariants and to find out the situation in which if A(x) is complex for some x whether it is equivalent as a representation to Q(x) such that Q(x) has a real coefficients for all xG. This notion is equivalent to finding an invertible matrix T such that Q(x) = TA(x) T and Q(x) is real. It was also proved in this study that for any complex irreducible orthogonal representation of a finite group G, the representation Q(x) for every xG is equivalent to a real orthogonal representation.


How to cite this article:

H.S. Ndakwo . The Representation of Real Characters of Finite Groups.
DOI: https://doi.org/10.36478/rjasci.2007.372.376
URL: https://www.makhillpublications.co/view-article/1815-932x/rjasci.2007.372.376