Definitionintro
Subgroup
A subset of a group that is itself a group under the same operation, closed under products and inverses.
A subset of a group that is itself a group under the same operation, closed under products and inverses.
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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