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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 11984 | . . . . . . . . 9 ⊢ 1 ∈ ℕ | |
2 | eleq1 2826 | . . . . . . . . 9 ⊢ (𝑧 = 1 → (𝑧 ∈ ℕ ↔ 1 ∈ ℕ)) | |
3 | 1, 2 | mpbiri 257 | . . . . . . . 8 ⊢ (𝑧 = 1 → 𝑧 ∈ ℕ) |
4 | nnnn0 12240 | . . . . . . . . . 10 ⊢ (𝑧 ∈ ℕ → 𝑧 ∈ ℕ0) | |
5 | dvds1 16028 | . . . . . . . . . 10 ⊢ (𝑧 ∈ ℕ0 → (𝑧 ∥ 1 ↔ 𝑧 = 1)) | |
6 | 4, 5 | syl 17 | . . . . . . . . 9 ⊢ (𝑧 ∈ ℕ → (𝑧 ∥ 1 ↔ 𝑧 = 1)) |
7 | 6 | bicomd 222 | . . . . . . . 8 ⊢ (𝑧 ∈ ℕ → (𝑧 = 1 ↔ 𝑧 ∥ 1)) |
8 | 3, 7 | biadanii 819 | . . . . . . 7 ⊢ (𝑧 = 1 ↔ (𝑧 ∈ ℕ ∧ 𝑧 ∥ 1)) |
9 | velsn 4577 | . . . . . . 7 ⊢ (𝑧 ∈ {1} ↔ 𝑧 = 1) | |
10 | breq1 5077 | . . . . . . . 8 ⊢ (𝑛 = 𝑧 → (𝑛 ∥ 1 ↔ 𝑧 ∥ 1)) | |
11 | 10 | elrab 3624 | . . . . . . 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 2735 | . . . . 5 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} = {1} |
14 | 1ex 10971 | . . . . . 6 ⊢ 1 ∈ V | |
15 | 14 | ensn1 8807 | . . . . 5 ⊢ {1} ≈ 1o |
16 | 13, 15 | eqbrtri 5095 | . . . 4 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 1o |
17 | 1sdom2 9021 | . . . 4 ⊢ 1o ≺ 2o | |
18 | ensdomtr 8900 | . . . 4 ⊢ (({𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 1o ∧ 1o ≺ 2o) → {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≺ 2o) | |
19 | 16, 17, 18 | mp2an 689 | . . 3 ⊢ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≺ 2o |
20 | sdomnen 8769 | . . 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 16378 | . . 3 ⊢ (1 ∈ ℙ ↔ (1 ∈ ℕ ∧ {𝑛 ∈ ℕ ∣ 𝑛 ∥ 1} ≈ 2o)) | |
23 | 1, 22 | mpbiran 706 | . 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 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 {crab 3068 {csn 4561 class class class wbr 5074 1oc1o 8290 2oc2o 8291 ≈ cen 8730 ≺ csdm 8732 1c1 10872 ℕcn 11973 ℕ0cn0 12233 ∥ cdvds 15963 ℙcprime 16376 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-sup 9201 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-z 12320 df-uz 12583 df-rp 12731 df-seq 13722 df-exp 13783 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-dvds 15964 df-prm 16377 |
This theorem is referenced by: isprm2 16387 nprmdvds1 16411 prm23lt5 16515 pcmpt 16593 prmo1 16738 prmlem1a 16808 prmcyg 19495 prmgrpsimpgd 19717 prmirredlem 20694 bposlem5 26436 2lgs 26555 chtvalz 32609 prmdvdsfmtnof1lem2 45037 lighneallem3 45059 |
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