On the homomorphisms between the generalized Verma modules arising from conformally invariant systems

摘要

It is shown by Barchini, Kable, and Zierau that conformally invariant systems of differential operators yield explicit homomorphisms between certain generalized Verma modules. In this paper we determine whether or not the homomorphisms arising from such systems of first and second order difieren- tial operators associated to maximal parabolic subalgebras of quasi-Heisenberg type are standard.