Random triples
| Subject | Object |
|---|---|
| gptkb:Graham's_number | upper bound in Ramsey theory problem |
| gptkb:Gerver's_sofa | moving sofa problem (best known) |
| gptkb:Σ(2,3,5)_(Poincaré_sphere) | Poincaré conjecture (as a counterexample to naive formulation) |
| gptkb:Schwarzschild_spacetime | gptkb:Einstein_field_equations |