A five-dimensional W ⊇ span(1, u, u⁻¹) has three independent t with t, ut ∈ W iff it contains u², u⁻², 1/(u − a), or is H₀ + Q̄g + Q̄ug

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A five-dimensional W ⊇ span(1, u, u⁻¹) has three independent t with t, ut ∈ W iff it contains u², u⁻², 1/(u − a), or is H₀ + Q̄g + Q̄ug · Prove2Me