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Mirrors > Home > MPE Home > Th. List > Mathboxes > fmtnoinf | Structured version Visualization version GIF version |
Description: The set of Fermat numbers is infinite. (Contributed by AV, 3-Aug-2021.) |
Ref | Expression |
---|---|
fmtnoinf | ⊢ ran FermatNo ∉ Fin |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fmtnof1 44603 | . . . 4 ⊢ FermatNo:ℕ0–1-1→ℕ | |
2 | f1f 6593 | . . . 4 ⊢ (FermatNo:ℕ0–1-1→ℕ → FermatNo:ℕ0⟶ℕ) | |
3 | fdm 6532 | . . . . . 6 ⊢ (FermatNo:ℕ0⟶ℕ → dom FermatNo = ℕ0) | |
4 | nnssnn0 12058 | . . . . . . . 8 ⊢ ℕ ⊆ ℕ0 | |
5 | nnnfi 13504 | . . . . . . . 8 ⊢ ¬ ℕ ∈ Fin | |
6 | ssfi 8829 | . . . . . . . . . 10 ⊢ ((ℕ0 ∈ Fin ∧ ℕ ⊆ ℕ0) → ℕ ∈ Fin) | |
7 | 6 | expcom 417 | . . . . . . . . 9 ⊢ (ℕ ⊆ ℕ0 → (ℕ0 ∈ Fin → ℕ ∈ Fin)) |
8 | 7 | con3d 155 | . . . . . . . 8 ⊢ (ℕ ⊆ ℕ0 → (¬ ℕ ∈ Fin → ¬ ℕ0 ∈ Fin)) |
9 | 4, 5, 8 | mp2 9 | . . . . . . 7 ⊢ ¬ ℕ0 ∈ Fin |
10 | eleq1 2818 | . . . . . . 7 ⊢ (dom FermatNo = ℕ0 → (dom FermatNo ∈ Fin ↔ ℕ0 ∈ Fin)) | |
11 | 9, 10 | mtbiri 330 | . . . . . 6 ⊢ (dom FermatNo = ℕ0 → ¬ dom FermatNo ∈ Fin) |
12 | 3, 11 | syl 17 | . . . . 5 ⊢ (FermatNo:ℕ0⟶ℕ → ¬ dom FermatNo ∈ Fin) |
13 | ffun 6526 | . . . . . 6 ⊢ (FermatNo:ℕ0⟶ℕ → Fun FermatNo) | |
14 | fundmfibi 8933 | . . . . . 6 ⊢ (Fun FermatNo → (FermatNo ∈ Fin ↔ dom FermatNo ∈ Fin)) | |
15 | 13, 14 | syl 17 | . . . . 5 ⊢ (FermatNo:ℕ0⟶ℕ → (FermatNo ∈ Fin ↔ dom FermatNo ∈ Fin)) |
16 | 12, 15 | mtbird 328 | . . . 4 ⊢ (FermatNo:ℕ0⟶ℕ → ¬ FermatNo ∈ Fin) |
17 | 1, 2, 16 | mp2b 10 | . . 3 ⊢ ¬ FermatNo ∈ Fin |
18 | nn0ex 12061 | . . . 4 ⊢ ℕ0 ∈ V | |
19 | f1dmvrnfibi 8938 | . . . . 5 ⊢ ((ℕ0 ∈ V ∧ FermatNo:ℕ0–1-1→ℕ) → (FermatNo ∈ Fin ↔ ran FermatNo ∈ Fin)) | |
20 | 19 | notbid 321 | . . . 4 ⊢ ((ℕ0 ∈ V ∧ FermatNo:ℕ0–1-1→ℕ) → (¬ FermatNo ∈ Fin ↔ ¬ ran FermatNo ∈ Fin)) |
21 | 18, 1, 20 | mp2an 692 | . . 3 ⊢ (¬ FermatNo ∈ Fin ↔ ¬ ran FermatNo ∈ Fin) |
22 | 17, 21 | mpbi 233 | . 2 ⊢ ¬ ran FermatNo ∈ Fin |
23 | 22 | nelir 3039 | 1 ⊢ ran FermatNo ∉ Fin |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 ↔ wb 209 ∧ wa 399 = wceq 1543 ∈ wcel 2112 ∉ wnel 3036 Vcvv 3398 ⊆ wss 3853 dom cdm 5536 ran crn 5537 Fun wfun 6352 ⟶wf 6354 –1-1→wf1 6355 Fincfn 8604 ℕcn 11795 ℕ0cn0 12055 FermatNocfmtno 44595 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-inf2 9234 ax-cnex 10750 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-pre-mulgt0 10771 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-om 7623 df-1st 7739 df-2nd 7740 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-1o 8180 df-er 8369 df-en 8605 df-dom 8606 df-sdom 8607 df-fin 8608 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-div 11455 df-nn 11796 df-2 11858 df-n0 12056 df-z 12142 df-uz 12404 df-rp 12552 df-seq 13540 df-exp 13601 df-fmtno 44596 |
This theorem is referenced by: prminf2 44656 |
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