Acta Polytechnica (Oct 2013)
EXTREMAL VECTORS FOR VERMA TYPE REPRESENTATION OF B2
Abstract
Starting from the Verma modules of the algebra B2 we explicitly construct factor representations of the algebra B2 which are connected with the unitary representation of the group SO(3, 2). We find a full set of extremal vectors for representations of this kind. So we can explicitly resolve the problem of the irreducibility of these representations.