Geodesic
On Racah Operators
Funkcionalʹnyj analiz i ego priloženiâ, Tome 40 (2006) no. 3, pp. 69-72

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As a generalization of the well-known Racah coefficients (defined for finite-dimensional representations of semisimple Lie groups), we introduce the notion of Racah operators for locally compact groups with “nice” dual space. In the case of the group $PSL(2,\mathbb{C})$, these operators are explicitly indicated.
Keywords: Racah operator, group representation, dual space
Mots-clés : distribution. 
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     title = {On {Racah} {Operators}},
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R. S. Ismagilov. On Racah Operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 40 (2006) no. 3, pp. 69-72. http://geodesic.mathdoc.fr/item/FAA_2006_40_3_a7/