| Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > fmtnorn | Structured version Visualization version GIF version | ||
| Description: A Fermat number is a function value of the enumeration of the Fermat numbers. (Contributed by AV, 3-Aug-2021.) |
| Ref | Expression |
|---|---|
| fmtnorn | ⊢ (𝐹 ∈ ran FermatNo ↔ ∃𝑛 ∈ ℕ0 (FermatNo‘𝑛) = 𝐹) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovex 7444 | . . 3 ⊢ ((2↑(2↑𝑛)) + 1) ∈ V | |
| 2 | df-fmtno 48203 | . . 3 ⊢ FermatNo = (𝑛 ∈ ℕ0 ↦ ((2↑(2↑𝑛)) + 1)) | |
| 3 | 1, 2 | fnmpti 6679 | . 2 ⊢ FermatNo Fn ℕ0 |
| 4 | fvelrnb 6942 | . 2 ⊢ (FermatNo Fn ℕ0 → (𝐹 ∈ ran FermatNo ↔ ∃𝑛 ∈ ℕ0 (FermatNo‘𝑛) = 𝐹)) | |
| 5 | 3, 4 | ax-mp 5 | 1 ⊢ (𝐹 ∈ ran FermatNo ↔ ∃𝑛 ∈ ℕ0 (FermatNo‘𝑛) = 𝐹) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 = wceq 1567 ∈ wcel 2149 ∃wrex 3095 ran crn 5663 Fn wfn 6532 ‘cfv 6537 (class class class)co 7411 1c1 11101 + caddc 11103 2c2 12295 ℕ0cn0 12504 ↑cexp 14097 FermatNocfmtno 48202 |
| 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 5261 ax-nul 5271 ax-pr 5405 |
| 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 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-iota 6493 df-fun 6539 df-fn 6540 df-fv 6545 df-ov 7414 df-fmtno 48203 |
| This theorem is referenced by: prmdvdsfmtnof1lem2 48260 prmdvdsfmtnof 48261 prmdvdsfmtnof1 48262 |
| Copyright terms: Public domain | W3C validator |