Conceptintro
Refutation
Also called proof by refutation, refutation proof.
A derivation of the empty clause, showing that a clause set is unsatisfiable.
A derivation of the empty clause, showing that a clause set is unsatisfiable.
About this page
The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.
| Ladder | Level | What the next level needs |
|---|---|---|
| Human proof | H0 no proof |
|
| Lean | L0 no Lean part |
|
| Visual | V0 none |
|
| Writing | W0 stub |
|
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