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: |
|---|---|---|---|
| correctness-sort | proved | all subs proved | inv-inner, inv-outer, sort, |
| sort | axiom | ||
| inv-outer | axiom | ||
| inv-inner | axiom |