Criteria for Groups with Representations of the Second Kind and for Simple Phase Groups
Canadian journal of mathematics, Tome 27 (1975) no. 3, pp. 528-544

Voir la notice de l'article provenant de la source Cambridge University Press

In this paper we consider matrix representations of compact groups over the field of the complex numbers. We shall deal mainly with finite groups.The Kronecker product of two irreducible representations σ1 and σ2 of a group is in general a reducible representation of . The explicit reduction of such a product to irreducible representations σ3 can be performed by means of a unitary matrix, the elements of which are called Wigner coefficients or Clebsch-Gordan coefficients [1; 25; 27].
Zanten, A. J. Van; Vries, E. De. Criteria for Groups with Representations of the Second Kind and for Simple Phase Groups. Canadian journal of mathematics, Tome 27 (1975) no. 3, pp. 528-544. doi: 10.4153/CJM-1975-064-4
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