Let A be a d×d expanding matrix,and suppose that u is a family of orthogonal matrices with Au=uA.We construct the following iterated function systemfi(x)=QiA-ki(x+di),i=1,2,…,N,where Qi∈u,di∈Rd and ki∈Z+.In this paper,we firstly study the existence of the self-affine set generated by the iterated function system;Then,according to the properties of pseudo-norm w(x)[5],we show that if the system satisfies the open set condition,then the strong open set condition also holds.
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