Random triples
| Subject | Object |
|---|---|
| gptkb:A1-homotopy_category | A1-homotopy classes of maps |
| gptkb:étale_topology | étale morphisms |
| gptkb:Spanier–Whitehead_category | stable homotopy classes of maps |
| gptkb:Derived_category | Roof diagrams |
| gptkb:Mod_R | R-linear maps |
| gptkb:Unbounded_derived_category | chain maps up to homotopy |