Proof: 1) ∃ {\displaystyle \ \exists } UFTI Z ⇒ {\displaystyle Z\ \ \Rightarrow \ } fundamental theorem
Given W ∈ A n ∗ {\displaystyle W\in {\mathcal {A}}_{n}^{*}} , set V = W ∘ Z {\displaystyle V=W\circ Z}
