Theoremintro
Pigeonhole principle
Also called Dirichlet's box principle.
If more items than boxes are placed, some box holds at least two.
If more items than boxes are placed, some box holds at least two.
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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