I need help with part 2 of the following question. Please show A separates points and rule out the set C_x0,y0. By Stone's theorem, this would imply uniform density. There's another poster on this site who gave a nonsense answer to this question.
Let X, Y be compact metric spaces. Let A = {(x, y) →summation i=1 to n fi(x)gi(y) | fi ∈ C(X, R), and gi ∈ C(Y, R), 1 ≤ i ≤ n}.
i. Show that A is an algebra.
ii. Show that A is uniformly dense in C(X × Y, R).
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