A five-dimensional space of rational functions of u containing 1, u, u⁻¹ carries a 2×3 configuration iff it is D1, D2a or D2b

Initializing...

A five-dimensional space of rational functions of u containing 1, u, u⁻¹ carries a 2×3 configuration iff it is D1, D2a or D2b · Prove2Me