For u ∉ Q̄ with uū algebraic and distinct non-zero algebraic a₁, a₂, the space Q̄ + Q̄u + Q̄ū + Q̄u/(u² − a₁) + Q̄u/(u² − a₂) carries a 2×3 configuration

Initializing...

For u ∉ Q̄ with uū algebraic and distinct non-zero algebraic a₁, a₂, the space Q̄ + Q̄u + Q̄ū + Q̄u/(u² − a₁) + Q̄u/(u² − a₂) carries a 2×3 configuration · Prove2Me