Supported by National Natural Science Foundation of China(Grant Nos.11101120, 11171299 and 11001247);Fundamental Research Funds for the Central Universities
In this paper, we shall study the solutions of functional equations of the formΦ=∑α∈Zsa(α)Φ(M.-α)where is an r × 1 column vector of functions on the s-dimensional Euclidean space,a := (a(a))α∈Zs is ...