Definitionintro
Variant function
Also called Loop variant, Ranking function, Bound function, Decreasing measure.
A quantity that is non-negative (or bounded below) and strictly decreases each iteration, forcing termination.
A quantity that is non-negative (or bounded below) and strictly decreases each iteration, forcing termination.
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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