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Merged
grunweg merged 5 commits into from
Dec 8, 2025
Merged

fix(pitfalls.md): remove repeated word #760

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a3a5f87
Fix duplicate phrase in pitfalls.md
AxelBoldt Dec 8, 2025
7d9ead4
Merge branch 'leanprover-community:lean4' into lean4
AxelBoldt Dec 8, 2025
b7810fa
Fix typos in pitfalls.md / Other partial functions
AxelBoldt Dec 8, 2025
4012671
Merge branch 'leanprover-community:lean4' into lean4
AxelBoldt Dec 8, 2025
fcd855f
Fix typo in Euclidean metric explanation
AxelBoldt Dec 8, 2025
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2 changes: 1 addition & 1 deletion templates/extras/pitfalls.md
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Expand Up @@ -453,7 +453,7 @@ example : dist ![(1 : ℝ),0] ![0,1] = 1 := by
fin_cases b <;> simp
```

To instead use the standard Euclidean metric (also called the $L^2$ metric), you must use instead use `EuclideanSpace ℝ (Fin n)`, which is an abbreviation for `WithLp 2 (Fin n → ℝ)`. Vectors of this type can be written using the `!₂[x,y,z,...]` notation.
To instead use the standard Euclidean metric (also called the $L^2$ metric), you must use `EuclideanSpace ℝ (Fin n)`, which is an abbreviation for `WithLp 2 (Fin n → ℝ)`. Vectors of this type can be written using the `!₂[x,y,z,...]` notation.
```lean
example : dist !₂[(1 : ℝ),0] !₂[0,1] = √2 := by
norm_num [EuclideanSpace.dist_eq]
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