“…As in Section 2.1, we denote by B(E) ⊂ E the unit ball centered at zero, and by Δ(E) ⊂ E the polydisk in (6). Let now Y be the space of sequences (ϕ m ) m∈Z of analytic functions ϕ m = (ϕ 1m , ϕ 2m ) : B(E) → F 1 × F 2 , m ∈ Z, with a holomorphic extensionφ m to the interior of the polydisk Δ(E) which is continuous on Δ(E), and such that for every m ∈ Z, ϕ m (0) = 0, d 0 ϕ m = 0, and…”