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Mirrors > Home > MPE Home > Th. List > fvprmselelfz | Structured version Visualization version GIF version |
Description: The value of the prime selection function is in a finite sequence of integers if the argument is in this finite sequence of integers. (Contributed by AV, 19-Aug-2020.) |
Ref | Expression |
---|---|
fvprmselelfz.f | ⊢ 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)) |
Ref | Expression |
---|---|
fvprmselelfz | ⊢ ((𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁)) → (𝐹‘𝑋) ∈ (1...𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fvprmselelfz.f | . . . 4 ⊢ 𝐹 = (𝑚 ∈ ℕ ↦ if(𝑚 ∈ ℙ, 𝑚, 1)) | |
2 | eleq1 2824 | . . . . . 6 ⊢ (𝑚 = 𝑋 → (𝑚 ∈ ℙ ↔ 𝑋 ∈ ℙ)) | |
3 | id 22 | . . . . . 6 ⊢ (𝑚 = 𝑋 → 𝑚 = 𝑋) | |
4 | 2, 3 | ifbieq1d 4489 | . . . . 5 ⊢ (𝑚 = 𝑋 → if(𝑚 ∈ ℙ, 𝑚, 1) = if(𝑋 ∈ ℙ, 𝑋, 1)) |
5 | iftrue 4471 | . . . . . 6 ⊢ (𝑋 ∈ ℙ → if(𝑋 ∈ ℙ, 𝑋, 1) = 𝑋) | |
6 | 5 | adantr 482 | . . . . 5 ⊢ ((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → if(𝑋 ∈ ℙ, 𝑋, 1) = 𝑋) |
7 | 4, 6 | sylan9eqr 2798 | . . . 4 ⊢ (((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 𝑋) |
8 | elfznn 13331 | . . . . . 6 ⊢ (𝑋 ∈ (1...𝑁) → 𝑋 ∈ ℕ) | |
9 | 8 | adantl 483 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁)) → 𝑋 ∈ ℕ) |
10 | 9 | adantl 483 | . . . 4 ⊢ ((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → 𝑋 ∈ ℕ) |
11 | 1, 7, 10, 10 | fvmptd2 6915 | . . 3 ⊢ ((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → (𝐹‘𝑋) = 𝑋) |
12 | simprr 771 | . . 3 ⊢ ((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → 𝑋 ∈ (1...𝑁)) | |
13 | 11, 12 | eqeltrd 2837 | . 2 ⊢ ((𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → (𝐹‘𝑋) ∈ (1...𝑁)) |
14 | iffalse 4474 | . . . . . 6 ⊢ (¬ 𝑋 ∈ ℙ → if(𝑋 ∈ ℙ, 𝑋, 1) = 1) | |
15 | 14 | adantr 482 | . . . . 5 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → if(𝑋 ∈ ℙ, 𝑋, 1) = 1) |
16 | 4, 15 | sylan9eqr 2798 | . . . 4 ⊢ (((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) ∧ 𝑚 = 𝑋) → if(𝑚 ∈ ℙ, 𝑚, 1) = 1) |
17 | 9 | adantl 483 | . . . 4 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → 𝑋 ∈ ℕ) |
18 | 1nn 12030 | . . . . 5 ⊢ 1 ∈ ℕ | |
19 | 18 | a1i 11 | . . . 4 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → 1 ∈ ℕ) |
20 | 1, 16, 17, 19 | fvmptd2 6915 | . . 3 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → (𝐹‘𝑋) = 1) |
21 | elnnuz 12668 | . . . . . 6 ⊢ (𝑁 ∈ ℕ ↔ 𝑁 ∈ (ℤ≥‘1)) | |
22 | eluzfz1 13309 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘1) → 1 ∈ (1...𝑁)) | |
23 | 21, 22 | sylbi 216 | . . . . 5 ⊢ (𝑁 ∈ ℕ → 1 ∈ (1...𝑁)) |
24 | 23 | adantr 482 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁)) → 1 ∈ (1...𝑁)) |
25 | 24 | adantl 483 | . . 3 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → 1 ∈ (1...𝑁)) |
26 | 20, 25 | eqeltrd 2837 | . 2 ⊢ ((¬ 𝑋 ∈ ℙ ∧ (𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁))) → (𝐹‘𝑋) ∈ (1...𝑁)) |
27 | 13, 26 | pm2.61ian 810 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝑋 ∈ (1...𝑁)) → (𝐹‘𝑋) ∈ (1...𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 = wceq 1539 ∈ wcel 2104 ifcif 4465 ↦ cmpt 5164 ‘cfv 6458 (class class class)co 7307 1c1 10918 ℕcn 12019 ℤ≥cuz 12628 ...cfz 13285 ℙcprime 16421 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-cnex 10973 ax-resscn 10974 ax-1cn 10975 ax-icn 10976 ax-addcl 10977 ax-addrcl 10978 ax-mulcl 10979 ax-mulrcl 10980 ax-mulcom 10981 ax-addass 10982 ax-mulass 10983 ax-distr 10984 ax-i2m1 10985 ax-1ne0 10986 ax-1rid 10987 ax-rnegex 10988 ax-rrecex 10989 ax-cnre 10990 ax-pre-lttri 10991 ax-pre-lttrn 10992 ax-pre-ltadd 10993 ax-pre-mulgt0 10994 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3286 df-rab 3287 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-1st 7863 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11057 df-mnf 11058 df-xr 11059 df-ltxr 11060 df-le 11061 df-sub 11253 df-neg 11254 df-nn 12020 df-z 12366 df-uz 12629 df-fz 13286 |
This theorem is referenced by: (None) |
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