FrobeniusSchurIndicatorAS

Let R be a relation matrix, T the character table. FrobeniusSchurIndicatorAS(R, T, a) returns the Frobenius-Schur indicator of the a-th irreducible character [5]. It is defined by

$$\nu_2(\chi)=\frac{m_\chi}{n_S\chi(1)}\sum_{s\in S}\frac{1}{n_s}\chi(\sigma_s{}^2).$$