| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 12731 | . . 3 ⊢ 2 ∈ ℤ | |
| 2 | 1lt2 12518 | . . 3 ⊢ 1 < 2 | |
| 3 | eluz2b1 13049 | . . 3 ⊢ (2 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 1 < 2)) | |
| 4 | 1, 2, 3 | mpbir2an 724 | . 2 ⊢ 2 ∈ (ℤ≥‘2) |
| 5 | ral0 4453 | . . 3 ⊢ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2 | |
| 6 | fzssuz 13702 | . . . . . 6 ⊢ (2...(2 − 1)) ⊆ (ℤ≥‘2) | |
| 7 | dfss2 4094 | . . . . . 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 13734 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = ∅ | |
| 10 | 8, 9 | eqtr3i 2785 | . . . 4 ⊢ (2...(2 − 1)) = ∅ |
| 11 | 10 | raleqi 3317 | . . 3 ⊢ (∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 ↔ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2) |
| 12 | 5, 11 | mpbir 234 | . 2 ⊢ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 |
| 13 | isprm3 16863 | . 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 1569 ∈ wcel 2144 ∀wral 3076 ⊆ wss 3895 ∩ cin 4089 ∅c0 4278 class class class wbr 5102 ‘cfv 6538 (class class class)co 7420 1c1 11204 < clt 11346 − cmin 11544 2c2 12400 ℤcz 12696 ℤ≥cuz 12968 ...cfz 13642 ∥ cdvds 16427 ℙcprime 16851 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 ax-pre-mulgt0 11280 ax-pre-sup 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 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 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-1o 8479 df-2o 8480 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-fin 8980 df-sup 9437 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 df-div 11977 df-nn 12339 df-2 12408 df-3 12409 df-n0 12610 df-z 12697 df-uz 12969 df-rp 13124 df-fz 13643 df-seq 14148 df-exp 14208 df-cj 15271 df-re 15272 df-im 15273 df-sqrt 15407 df-abs 15408 df-dvds 16428 df-prm 16852 |
| This theorem is used by: 2mulprm 16873 ge2nprmge4 16882 isoddgcd1 16912 3lcm2e6 16913 pythagtriplem4 17002 pc2dvds 17062 oddprmdvds 17086 prmo2 17223 prmgaplem3 17236 lt6abl 20114 2logb9irr 27128 2logb3irr 27130 ppi2 27502 cht2 27504 1sgm2ppw 27532 perfectlem1 27561 perfectlem2 27562 perfect 27563 bpos1 27615 lgs2 27646 lgsdir2 27662 lgseisenlem2 27708 lgsquad2lem1 27716 lgsquad2lem2 27717 lgsquad3 27719 m1lgs 27720 2lgs 27739 2lgsoddprm 27748 dchrisum0flb 27842 fltne 27980 flt4lem2 27982 flt4lem5a 27987 flt4lem5b 27988 flt4lem5c 27989 flt4lem5d 27990 flt4lem5e 27991 numclwwlk5lem 30993 constrext2chnlem 34428 2sqr3minply 34458 2sqr3nconstr 34459 cos9thpinconstrlem2 34468 hgt750lemd 35323 12gcd5e1 43146 goldbachthlem2 48724 odz2prm2pw 48741 fmtnoprmfac1 48743 fmtnoprmfac2 48745 lighneallem2 48784 lighneallem3 48785 lighneallem4 48788 proththd 48792 ppivalnnnprm 48806 isodd7 48856 gcd2odd1 48859 perfectALTV 48914 7gbow 48963 sbgoldbalt 48972 sgoldbeven3prm 48974 sbgoldbo 48978 nnsum3primes4 48979 nnsum3primesle9 48985 zlmodzxznm 49702 |
| Copyright terms: Public domain | W3C validator |