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Employing the general ordering theorem (GOT),operational methods and incomplete 2-D Hermite polynomials,we derive the t-ordered expansion of Fock space projectors.Using the result,the general ordered form of the coherent state projectors is obtained.This indeed gives a new integration formula regarding incomplete 2-D Hermite polynomials.In addition,the orthogonality relation of the incomplete 2-D Hermite polynomials is derived to resolve Dattolis failure.