A lemma (entry) may depend on lemmas (entries) below its position, but never on lemmas above its position. This means the list is a topological order of the dependency graph. An entry 'all subs proved' means that all used lemmas are (transitively) proved.
| Name: | Status: | Subs proved? | Used: |
|---|---|---|---|
| dls-split | proved | all subs proved | dls-emp, dls-one, dls-rec, |
| dls-last | proved | all subs proved | dls-rec, dls-one, dls-emp, |
| dls-one | proved | all subs proved | dls-emp, dls-rec, |
| dls-length | proved | all subs proved | dls-rec, dls-emp, |
| dls-emp | axiom | ||
| dls-rec | axiom |