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| Mirrors > Home > MPE Home > Th. List > 1nprm | Structured version Visualization version GIF version | ||
| Description: 1 is not a prime number. (Contributed by Paul Chapman, 22-Jun-2011.) (Proof shortened by Fan Zheng, 3-Jul-2016.) |
| Ref | Expression |
|---|---|
| 1nprm | ⊢ ¬ 1 ∈ ℙ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn 12185 | . . . . . . . . 9 ⊢ 1 ∈ ℕ | |
| 2 | eleq1 2824 | . . . . . . . . 9 ⊢ (𝑧 = 1 → (𝑧 ∈ ℕ ↔ 1 ∈ ℕ)) | |
| 3 | 1, 2 | mpbiri 258 | . . . . . . . 8 ⊢ (𝑧 = 1 → 𝑧 ∈ ℕ) |
| 4 | nnnn0 12444 | . . . . . . . . . 10 ⊢ (𝑧 ∈ ℕ → 𝑧 ∈ ℕ0) | |
| 5 | dvds1 16288 | . . . . . . . . . 10 ⊢ (𝑧 ∈ ℕ0 → (𝑧 ∥ 1 ↔ 𝑧 = 1)) | |
| 6 | 4, 5 | syl 17 | . . . . . . . . 9 ⊢ (𝑧 ∈ ℕ → (𝑧 ∥ 1 ↔ 𝑧 = 1)) |
| 7 | 6 | bicomd 223 | . . . . . . . 8 ⊢ (𝑧 ∈ ℕ → (𝑧 = 1 ↔ 𝑧 ∥ 1)) |
| 8 | 3, 7 | biadanii 822 | . . . . . . 7 ⊢ (𝑧 = 1 ↔ (𝑧 ∈ ℕ ∧ 𝑧 ∥ 1)) |
| 9 | velsn 4583 | . . . . . . 7 ⊢ (𝑧 ∈ {1} ↔ 𝑧 = 1) | |
| 10 | breq1 5088 | . . . . . . . 8 ⊢ (𝑛 = 𝑧 → (𝑛 ∥ 1 ↔ 𝑧 ∥ 1)) | |
| 11 | 10 | elrab 3634 | . . . . . . 7 ⊢ (𝑧 ∈ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ↔ (𝑧 ∈ ℕ ∧ 𝑧 ∥ 1)) |
| 12 | 8, 9, 11 | 3bitr4ri 304 | . . . . . 6 ⊢ (𝑧 ∈ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ↔ 𝑧 ∈ {1}) |
| 13 | 12 | eqriv 2733 | . . . . 5 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} = {1} |
| 14 | 1ex 11140 | . . . . . 6 ⊢ 1 ∈ V | |
| 15 | 14 | ensn1 8968 | . . . . 5 ⊢ {1} ≈ 1o |
| 16 | 13, 15 | eqbrtri 5106 | . . . 4 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 1o |
| 17 | 1sdom2 9158 | . . . 4 ⊢ 1o ≺ 2o | |
| 18 | ensdomtr 9051 | . . . 4 ⊢ (({𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 1o ∧ 1o ≺ 2o) → {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≺ 2o) | |
| 19 | 16, 17, 18 | mp2an 693 | . . 3 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≺ 2o |
| 20 | sdomnen 8928 | . . 3 ⊢ ({𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≺ 2o → ¬ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 2o) | |
| 21 | 19, 20 | ax-mp 5 | . 2 ⊢ ¬ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 2o |
| 22 | isprm 16642 | . . 3 ⊢ (1 ∈ ℙ ↔ (1 ∈ ℕ ∧ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 2o)) | |
| 23 | 1, 22 | mpbiran 710 | . 2 ⊢ (1 ∈ ℙ ↔ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 2o) |
| 24 | 21, 23 | mtbir 323 | 1 ⊢ ¬ 1 ∈ ℙ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {crab 3389 {csn 4567 class class class wbr 5085 1oc1o 8398 2oc2o 8399 ≈ cen 8890 ≺ csdm 8892 1c1 11039 ℕcn 12174 ℕ0cn0 12437 ∥ cdvds 16221 ℙcprime 16640 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-2o 8406 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-sup 9355 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-3 12245 df-n0 12438 df-z 12525 df-uz 12789 df-rp 12943 df-seq 13964 df-exp 14024 df-cj 15061 df-re 15062 df-im 15063 df-sqrt 15197 df-abs 15198 df-dvds 16222 df-prm 16641 |
| This theorem is referenced by: isprm2 16651 nprmdvds1 16676 prm23lt5 16785 pcmpt 16863 prmo1 17008 prmlem1a 17077 prmcyg 19869 prmgrpsimpgd 20091 prmirredlem 21452 bposlem5 27251 2lgs 27370 cos9thpiminplylem2 33927 chtvalz 34773 prmdvdsfmtnof1lem2 48048 lighneallem3 48070 |
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