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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fmtno | Structured version Visualization version GIF version | ||
| Description: The 𝑁 th Fermat number. (Contributed by AV, 13-Jun-2021.) |
| Ref | Expression |
|---|---|
| fmtno | ⊢ (𝑁 ∈ ℕ0 → (FermatNo‘𝑁) = ((2↑(2↑𝑁)) + 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-fmtno 48138 | . 2 ⊢ FermatNo = (𝑛 ∈ ℕ0 ↦ ((2↑(2↑𝑛)) + 1)) | |
| 2 | oveq2 7405 | . . . 4 ⊢ (𝑛 = 𝑁 → (2↑𝑛) = (2↑𝑁)) | |
| 3 | 2 | oveq2d 7413 | . . 3 ⊢ (𝑛 = 𝑁 → (2↑(2↑𝑛)) = (2↑(2↑𝑁))) |
| 4 | 3 | oveq1d 7412 | . 2 ⊢ (𝑛 = 𝑁 → ((2↑(2↑𝑛)) + 1) = ((2↑(2↑𝑁)) + 1)) |
| 5 | id 22 | . 2 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℕ0) | |
| 6 | ovexd 7432 | . 2 ⊢ (𝑁 ∈ ℕ0 → ((2↑(2↑𝑁)) + 1) ∈ V) | |
| 7 | 1, 4, 5, 6 | fvmptd3 7000 | 1 ⊢ (𝑁 ∈ ℕ0 → (FermatNo‘𝑁) = ((2↑(2↑𝑁)) + 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1561 ∈ wcel 2143 Vcvv 3455 ‘cfv 6522 (class class class)co 7397 1c1 11075 + caddc 11077 2c2 12273 ℕ0cn0 12482 ↑cexp 14075 FermatNocfmtno 48137 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pr 5391 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3078 df-rex 3088 df-rab 3416 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5102 df-opab 5164 df-mpt 5183 df-id 5543 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-iota 6478 df-fun 6524 df-fv 6530 df-ov 7400 df-fmtno 48138 |
| This theorem is referenced by: fmtnoge3 48140 fmtnom1nn 48142 fmtnoodd 48143 fmtnof1 48145 fmtnorec1 48147 fmtnosqrt 48149 fmtno0 48150 fmtno1 48151 fmtnorec2lem 48152 fmtnorec3 48158 fmtnorec4 48159 fmtno2 48160 fmtno3 48161 fmtno4 48162 fmtnoprmfac1lem 48174 fmtno4prm 48185 2pwp1prmfmtno 48200 |
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