Key points are not available for this paper at this time.
We establish a theory of scalar Fourier coefficients for a class of non-holomorphic, automorphic forms on the quaternionic real Lie group U (2, n). By studying the theta lifts of holomorphic modular forms from U (1, 1), we apply this theory to obtain examples of non-holomorphic cusp forms on U (2, n) whose Fourier coefficients are algebraic numbers.
Hilado et al. (Fri,) studied this question.