| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > bruval | Structured version Visualization version GIF version | ||
| Description: The basic 𝑁-th root of unity. (Contributed by AV, 24-Oct-2026.) |
| Ref | Expression |
|---|---|
| bruval | ⊢ (𝑁 ∈ ℕ → (bRoU‘𝑁) = (exp‘((2 · (π · i)) / 𝑁))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq2 7457 | . . 3 ⊢ (𝑛 = 𝑁 → ((2 · (π · i)) / 𝑛) = ((2 · (π · i)) / 𝑁)) | |
| 2 | 1 | fveq2d 6918 | . 2 ⊢ (𝑛 = 𝑁 → (exp‘((2 · (π · i)) / 𝑛)) = (exp‘((2 · (π · i)) / 𝑁))) |
| 3 | df-bru 49738 | . 2 ⊢ bRoU = (𝑛 ∈ ℕ ↦ (exp‘((2 · (π · i)) / 𝑛))) | |
| 4 | fvex 6927 | . 2 ⊢ (exp‘((2 · (π · i)) / 𝑁)) ∈ V | |
| 5 | 2, 3, 4 | fvmpt 7022 | 1 ⊢ (𝑁 ∈ ℕ → (bRoU‘𝑁) = (exp‘((2 · (π · i)) / 𝑁))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ‘cfv 6564 (class class class)co 7449 ici 11239 · cmul 11242 / cdiv 12011 ℕcn 12373 2c2 12435 expce 16268 πcpi 16273 bRoUcbru 49737 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pr 5396 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-iota 6518 df-fun 6566 df-fv 6572 df-ov 7452 df-bru 49738 |
| This theorem is used by: brucn 49740 bruval2 49741 bruval3 49742 |
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