Definitionintro
Metric space
Also called metric.
A set with a distance function that is non-negative, symmetric, zero only on equal points, and satisfies the triangle inequality.
A set with a distance function that is non-negative, symmetric, zero only on equal points, and satisfies the triangle inequality.
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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