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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 12535 | . . 3 ⊢ 2 ∈ ℤ | |
| 2 | 1lt2 12323 | . . 3 ⊢ 1 < 2 | |
| 3 | eluz2b1 12844 | . . 3 ⊢ (2 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 1 < 2)) | |
| 4 | 1, 2, 3 | mpbir2an 712 | . 2 ⊢ 2 ∈ (ℤ≥‘2) |
| 5 | ral0 4453 | . . 3 ⊢ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2 | |
| 6 | fzssuz 13493 | . . . . . 6 ⊢ (2...(2 − 1)) ⊆ (ℤ≥‘2) | |
| 7 | dfss2 3921 | . . . . . 6 ⊢ ((2...(2 − 1)) ⊆ (ℤ≥‘2) ↔ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1))) | |
| 8 | 6, 7 | mpbi 230 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1)) |
| 9 | uzdisj 13525 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = ∅ | |
| 10 | 8, 9 | eqtr3i 2762 | . . . 4 ⊢ (2...(2 − 1)) = ∅ |
| 11 | 10 | raleqi 3296 | . . 3 ⊢ (∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 ↔ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2) |
| 12 | 5, 11 | mpbir 231 | . 2 ⊢ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 |
| 13 | isprm3 16622 | . 2 ⊢ (2 ∈ ℙ ↔ (2 ∈ (ℤ≥‘2) ∧ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2)) | |
| 14 | 4, 12, 13 | mpbir2an 712 | 1 ⊢ 2 ∈ ℙ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 = wceq 1542 ∈ wcel 2114 ∀wral 3052 ∩ cin 3902 ⊆ wss 3903 ∅c0 4287 class class class wbr 5100 ‘cfv 6500 (class class class)co 7368 1c1 11039 < clt 11178 − cmin 11376 2c2 12212 ℤcz 12500 ℤ≥cuz 12763 ...cfz 13435 ∥ cdvds 16191 ℙcprime 16610 |
| 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 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-2o 8408 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-sup 9357 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-div 11807 df-nn 12158 df-2 12220 df-3 12221 df-n0 12414 df-z 12501 df-uz 12764 df-rp 12918 df-fz 13436 df-seq 13937 df-exp 13997 df-cj 15034 df-re 15035 df-im 15036 df-sqrt 15170 df-abs 15171 df-dvds 16192 df-prm 16611 |
| This theorem is referenced by: 2mulprm 16632 ge2nprmge4 16640 isoddgcd1 16670 3lcm2e6 16671 pythagtriplem4 16759 pc2dvds 16819 oddprmdvds 16843 prmo2 16980 prmgaplem3 16993 lt6abl 19836 2logb9irr 26773 2logb3irr 26775 ppi2 27148 cht2 27150 1sgm2ppw 27179 perfectlem1 27208 perfectlem2 27209 perfect 27210 bpos1 27262 lgs2 27293 lgsdir2 27309 lgseisenlem2 27355 lgsquad2lem1 27363 lgsquad2lem2 27364 lgsquad3 27366 m1lgs 27367 2lgs 27386 2lgsoddprm 27395 dchrisum0flb 27489 numclwwlk5lem 30474 constrext2chnlem 33927 2sqr3minply 33957 2sqr3nconstr 33958 cos9thpinconstrlem2 33967 hgt750lemd 34825 12gcd5e1 42367 fltne 42996 flt4lem5a 43004 flt4lem5b 43005 flt4lem5c 43006 flt4lem5d 43007 flt4lem5e 43008 goldbachthlem2 47900 odz2prm2pw 47917 fmtnoprmfac1 47919 fmtnoprmfac2 47921 lighneallem2 47960 lighneallem3 47961 lighneallem4 47964 proththd 47968 isodd7 48019 gcd2odd1 48022 perfectALTV 48077 7gbow 48126 sbgoldbalt 48135 sgoldbeven3prm 48137 sbgoldbo 48141 nnsum3primes4 48142 nnsum3primesle9 48148 zlmodzxznm 48851 |
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