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| Mirrors > Home > MPE Home > Th. List > 2prm | Structured version Visualization version GIF version | ||
| Description: 2 is a prime number. (Contributed by Paul Chapman, 22-Jun-2011.) (Proof shortened by Fan Zheng, 16-Jun-2016.) |
| Ref | Expression |
|---|---|
| 2prm | ⊢ 2 ∈ ℙ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2z 12709 | . . 3 ⊢ 2 ∈ ℤ | |
| 2 | 1lt2 12496 | . . 3 ⊢ 1 < 2 | |
| 3 | eluz2b1 13027 | . . 3 ⊢ (2 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 1 < 2)) | |
| 4 | 1, 2, 3 | mpbir2an 724 | . 2 ⊢ 2 ∈ (ℤ≥‘2) |
| 5 | ral0 4454 | . . 3 ⊢ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2 | |
| 6 | fzssuz 13679 | . . . . . 6 ⊢ (2...(2 − 1)) ⊆ (ℤ≥‘2) | |
| 7 | dfss2 3917 | . . . . . 6 ⊢ ((2...(2 − 1)) ⊆ (ℤ≥‘2) ↔ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1))) | |
| 8 | 6, 7 | mpbi 233 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1)) |
| 9 | uzdisj 13711 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = ∅ | |
| 10 | 8, 9 | eqtr3i 2786 | . . . 4 ⊢ (2...(2 − 1)) = ∅ |
| 11 | 10 | raleqi 3318 | . . 3 ⊢ (∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 ↔ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2) |
| 12 | 5, 11 | mpbir 234 | . 2 ⊢ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 |
| 13 | isprm3 16838 | . 2 ⊢ (2 ∈ ℙ ↔ (2 ∈ (ℤ≥‘2) ∧ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2)) | |
| 14 | 4, 12, 13 | mpbir2an 724 | 1 ⊢ 2 ∈ ℙ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 = wceq 1570 ∈ wcel 2145 ∀wral 3077 ∩ cin 3898 ⊆ wss 3899 ∅c0 4279 class class class wbr 5103 ‘cfv 6531 (class class class)co 7412 1c1 11182 < clt 11324 − cmin 11522 2c2 12378 ℤcz 12674 ℤ≥cuz 12946 ...cfz 13620 ∥ cdvds 16402 ℙcprime 16826 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 ax-pre-sup 11259 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8460 df-2o 8461 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-sup 9418 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 df-nn 12317 df-2 12386 df-3 12387 df-n0 12588 df-z 12675 df-uz 12947 df-rp 13102 df-fz 13621 df-seq 14125 df-exp 14185 df-cj 15246 df-re 15247 df-im 15248 df-sqrt 15382 df-abs 15383 df-dvds 16403 df-prm 16827 |
| This theorem is used by: 2mulprm 16848 ge2nprmge4 16857 isoddgcd1 16887 3lcm2e6 16888 pythagtriplem4 16977 pc2dvds 17037 oddprmdvds 17061 prmo2 17198 prmgaplem3 17211 lt6abl 20089 2logb9irr 27105 2logb3irr 27107 ppi2 27479 cht2 27481 1sgm2ppw 27509 perfectlem1 27538 perfectlem2 27539 perfect 27540 bpos1 27592 lgs2 27623 lgsdir2 27639 lgseisenlem2 27685 lgsquad2lem1 27693 lgsquad2lem2 27694 lgsquad3 27696 m1lgs 27697 2lgs 27716 2lgsoddprm 27725 dchrisum0flb 27819 fltne 27957 flt4lem5a 27964 flt4lem5b 27965 flt4lem5c 27966 flt4lem5d 27967 flt4lem5e 27968 numclwwlk5lem 30970 constrext2chnlem 34364 2sqr3minply 34394 2sqr3nconstr 34395 cos9thpinconstrlem2 34404 hgt750lemd 35260 12gcd5e1 43021 goldbachthlem2 48575 odz2prm2pw 48592 fmtnoprmfac1 48594 fmtnoprmfac2 48596 lighneallem2 48635 lighneallem3 48636 lighneallem4 48639 proththd 48643 ppivalnnnprm 48657 isodd7 48707 gcd2odd1 48710 perfectALTV 48765 7gbow 48814 sbgoldbalt 48823 sgoldbeven3prm 48825 sbgoldbo 48829 nnsum3primes4 48830 nnsum3primesle9 48836 zlmodzxznm 49553 |
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