Title: The reduction of the product of two irreducible unitary representations of the proper orthochronous quantummechanical Poincaré group
Subjects: Poincaré series, Representations of groups, Symmetry (Physics), Poincaré, Séries de, Groupes, Représentation des, Symétrie (Physique), Groepentheorie, Representatie (wiskunde), Mathematische fysica, Physics, Physics, general