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| Description: Define a function generating the real Euclidean spaces of finite dimension. The case 𝑛 = 0 corresponds to a space of dimension 0, that is, limited to a neutral element (see ehl0 25451). Members of this family of spaces are Hilbert spaces, as shown in - ehlhl . (Contributed by Thierry Arnoux, 16-Jun-2019.) | 
| Ref | Expression | 
|---|---|
| df-ehl | ⊢ 𝔼hil = (𝑛 ∈ ℕ0 ↦ (ℝ^‘(1...𝑛))) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | cehl 25418 | . 2 class 𝔼hil | |
| 2 | vn | . . 3 setvar 𝑛 | |
| 3 | cn0 12526 | . . 3 class ℕ0 | |
| 4 | c1 11156 | . . . . 5 class 1 | |
| 5 | 2 | cv 1539 | . . . . 5 class 𝑛 | 
| 6 | cfz 13547 | . . . . 5 class ... | |
| 7 | 4, 5, 6 | co 7431 | . . . 4 class (1...𝑛) | 
| 8 | crrx 25417 | . . . 4 class ℝ^ | |
| 9 | 7, 8 | cfv 6561 | . . 3 class (ℝ^‘(1...𝑛)) | 
| 10 | 2, 3, 9 | cmpt 5225 | . 2 class (𝑛 ∈ ℕ0 ↦ (ℝ^‘(1...𝑛))) | 
| 11 | 1, 10 | wceq 1540 | 1 wff 𝔼hil = (𝑛 ∈ ℕ0 ↦ (ℝ^‘(1...𝑛))) | 
| Colors of variables: wff setvar class | 
| This definition is referenced by: ehlval 25448 | 
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