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On the basis of the formalism proposed by three of the present authors (A.K., J.P.and M.Y.), generalized Lipkin model consisting of (M+1) single-particle levels is investigated. This model is essentially a kind of the su(M+1)-algebraic model and, in contrast to the conventional treatment, the case, where fermions are partially occupied in each level, is discussed. The scheme for obtaining the orthogonal set for the irreducible representation is presented.

A Possible Boson Realization of Generalized Lipkin Model for Many-Fermion System: The su(M + 1)-Algebraic Model in Non-Symmetric Boson Representation