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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 48164 | . 2 ⊢ FermatNo = (𝑛 ∈ ℕ0 ↦ ((2↑(2↑𝑛)) + 1)) | |
| 2 | oveq2 7416 | . . . 4 ⊢ (𝑛 = 𝑁 → (2↑𝑛) = (2↑𝑁)) | |
| 3 | 2 | oveq2d 7424 | . . 3 ⊢ (𝑛 = 𝑁 → (2↑(2↑𝑛)) = (2↑(2↑𝑁))) |
| 4 | 3 | oveq1d 7423 | . 2 ⊢ (𝑛 = 𝑁 → ((2↑(2↑𝑛)) + 1) = ((2↑(2↑𝑁)) + 1)) |
| 5 | id 23 | . 2 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℕ0) | |
| 6 | ovexd 7443 | . 2 ⊢ (𝑁 ∈ ℕ0 → ((2↑(2↑𝑁)) + 1) ∈ V) | |
| 7 | 1, 4, 5, 6 | fvmptd3 7011 | 1 ⊢ (𝑁 ∈ ℕ0 → (FermatNo‘𝑁) = ((2↑(2↑𝑁)) + 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 Vcvv 3463 ‘cfv 6534 (class class class)co 7408 1c1 11097 + caddc 11099 2c2 12291 ℕ0cn0 12500 ↑cexp 14093 FermatNocfmtno 48163 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pr 5402 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-iota 6490 df-fun 6536 df-fv 6542 df-ov 7411 df-fmtno 48164 |
| This theorem is referenced by: fmtnoge3 48166 fmtnom1nn 48168 fmtnoodd 48169 fmtnof1 48171 fmtnorec1 48173 fmtnosqrt 48175 fmtno0 48176 fmtno1 48177 fmtnorec2lem 48178 fmtnorec3 48184 fmtnorec4 48185 fmtno2 48186 fmtno3 48187 fmtno4 48188 fmtnoprmfac1lem 48200 fmtno4prm 48211 2pwp1prmfmtno 48226 |
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