Let {X(t), t R} be a WSS random process. Suppose that R X () = R X (0) for some > 0. Show

Let {X(t), t ∈ R} be a WSS random process. Suppose that R_X(τ) = R_X(0) for some τ > 0. Show that, for any t, we have

X(t+r) = X(t), with probability one.