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: |
|---|---|---|---|
| rtc-one | proved | all subs proved | rtc1, rtc, |
| rtc1 | proved | all subs proved | rtc-base, rtc-rec, |
| rtc-trans | proved | all subs proved | rtc-rec, rtc-base, rtc, |
| rtc-refl | proved | all subs proved | rtc-base, rtc, |
| rtc-last | proved | all subs proved | rtc-base, rtc-rec, |
| rtc | axiom | ||
| rtc-rec | axiom | ||
| rtc-base | axiom |