Random triples
| Subject | Object |
|---|---|
| gptkb:Hirzebruch_surface | rational surface |
| gptkb:Hirzebruch_surfaces | not isomorphic to F_m for n ≠ m, n, m ≥ 0 |
| gptkb:Hirzebruch_surface | P(O ⊕ O(n)) over P^1 |
| gptkb:Hirzebruch_surfaces | minimal for n ≠ 1 |
| gptkb:Hirzebruch_surface | gptkb:projective_bundle_over_projective_line |