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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 12627 | . . 3 ⊢ 2 ∈ ℤ | |
| 2 | 1lt2 12414 | . . 3 ⊢ 1 < 2 | |
| 3 | eluz2b1 12944 | . . 3 ⊢ (2 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 1 < 2)) | |
| 4 | 1, 2, 3 | mpbir2an 723 | . 2 ⊢ 2 ∈ (ℤ≥‘2) |
| 5 | ral0 4460 | . . 3 ⊢ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2 | |
| 6 | fzssuz 13595 | . . . . . 6 ⊢ (2...(2 − 1)) ⊆ (ℤ≥‘2) | |
| 7 | dfss2 3924 | . . . . . 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 13627 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = ∅ | |
| 10 | 8, 9 | eqtr3i 2788 | . . . 4 ⊢ (2...(2 − 1)) = ∅ |
| 11 | 10 | raleqi 3321 | . . 3 ⊢ (∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 ↔ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2) |
| 12 | 5, 11 | mpbir 234 | . 2 ⊢ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 |
| 13 | isprm3 16742 | . 2 ⊢ (2 ∈ ℙ ↔ (2 ∈ (ℤ≥‘2) ∧ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2)) | |
| 14 | 4, 12, 13 | mpbir2an 723 | 1 ⊢ 2 ∈ ℙ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 = wceq 1570 ∈ wcel 2143 ∀wral 3079 ∩ cin 3905 ⊆ wss 3906 ∅c0 4287 class class class wbr 5110 ‘cfv 6538 (class class class)co 7412 1c1 11102 < clt 11244 − cmin 11442 2c2 12296 ℤcz 12592 ℤ≥cuz 12863 ...cfz 13536 ∥ cdvds 16311 ℙcprime 16730 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 ax-pre-sup 11179 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-2o 8455 df-er 8695 df-en 8945 df-dom 8946 df-sdom 8947 df-fin 8948 df-sup 9403 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-div 11873 df-nn 12235 df-2 12304 df-3 12305 df-n0 12506 df-z 12593 df-uz 12864 df-rp 13018 df-fz 13537 df-seq 14040 df-exp 14100 df-cj 15152 df-re 15153 df-im 15154 df-sqrt 15288 df-abs 15289 df-dvds 16312 df-prm 16731 |
| This theorem is referenced by: 2mulprm 16752 ge2nprmge4 16761 isoddgcd1 16791 3lcm2e6 16792 pythagtriplem4 16880 pc2dvds 16940 oddprmdvds 16964 prmo2 17101 prmgaplem3 17114 lt6abl 19966 2logb9irr 26938 2logb3irr 26940 ppi2 27312 cht2 27314 1sgm2ppw 27342 perfectlem1 27371 perfectlem2 27372 perfect 27373 bpos1 27425 lgs2 27456 lgsdir2 27472 lgseisenlem2 27518 lgsquad2lem1 27526 lgsquad2lem2 27527 lgsquad3 27529 m1lgs 27530 2lgs 27549 2lgsoddprm 27558 dchrisum0flb 27652 numclwwlk5lem 30716 constrext2chnlem 34118 2sqr3minply 34148 2sqr3nconstr 34149 cos9thpinconstrlem2 34158 hgt750lemd 35013 12gcd5e1 42748 fltne 43356 flt4lem5a 43364 flt4lem5b 43365 flt4lem5c 43366 flt4lem5d 43367 flt4lem5e 43368 goldbachthlem2 48275 odz2prm2pw 48292 fmtnoprmfac1 48294 fmtnoprmfac2 48296 lighneallem2 48335 lighneallem3 48336 lighneallem4 48339 proththd 48343 ppivalnnnprm 48357 isodd7 48407 gcd2odd1 48410 perfectALTV 48465 7gbow 48514 sbgoldbalt 48523 sgoldbeven3prm 48525 sbgoldbo 48529 nnsum3primes4 48530 nnsum3primesle9 48536 zlmodzxznm 49254 |
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