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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 12600 | . . 3 ⊢ 2 ∈ ℤ | |
| 2 | 1lt2 12387 | . . 3 ⊢ 1 < 2 | |
| 3 | eluz2b1 12917 | . . 3 ⊢ (2 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 1 < 2)) | |
| 4 | 1, 2, 3 | mpbir2an 721 | . 2 ⊢ 2 ∈ (ℤ≥‘2) |
| 5 | ral0 4451 | . . 3 ⊢ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2 | |
| 6 | fzssuz 13567 | . . . . . 6 ⊢ (2...(2 − 1)) ⊆ (ℤ≥‘2) | |
| 7 | dfss2 3922 | . . . . . 6 ⊢ ((2...(2 − 1)) ⊆ (ℤ≥‘2) ↔ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1))) | |
| 8 | 6, 7 | mpbi 232 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = (2...(2 − 1)) |
| 9 | uzdisj 13599 | . . . . 5 ⊢ ((2...(2 − 1)) ∩ (ℤ≥‘2)) = ∅ | |
| 10 | 8, 9 | eqtr3i 2786 | . . . 4 ⊢ (2...(2 − 1)) = ∅ |
| 11 | 10 | raleqi 3317 | . . 3 ⊢ (∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 ↔ ∀𝑧 ∈ ∅ ¬ 𝑧 ∥ 2) |
| 12 | 5, 11 | mpbir 233 | . 2 ⊢ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2 |
| 13 | isprm3 16700 | . 2 ⊢ (2 ∈ ℙ ↔ (2 ∈ (ℤ≥‘2) ∧ ∀𝑧 ∈ (2...(2 − 1)) ¬ 𝑧 ∥ 2)) | |
| 14 | 4, 12, 13 | mpbir2an 721 | 1 ⊢ 2 ∈ ℙ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 = wceq 1559 ∈ wcel 2141 ∀wral 3075 ∩ cin 3903 ⊆ wss 3904 ∅c0 4285 class class class wbr 5099 ‘cfv 6517 (class class class)co 7392 1c1 11071 < clt 11213 − cmin 11411 2c2 12269 ℤcz 12565 ℤ≥cuz 12836 ...cfz 13509 ∥ cdvds 16269 ℙcprime 16688 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 ax-pre-sup 11148 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-1st 7966 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-1o 8432 df-2o 8433 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-sup 9385 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-n0 12479 df-z 12566 df-uz 12837 df-rp 12991 df-fz 13510 df-seq 14012 df-exp 14072 df-cj 15109 df-re 15110 df-im 15111 df-sqrt 15245 df-abs 15246 df-dvds 16270 df-prm 16689 |
| This theorem is referenced by: 2mulprm 16710 ge2nprmge4 16719 isoddgcd1 16749 3lcm2e6 16750 pythagtriplem4 16838 pc2dvds 16898 oddprmdvds 16922 prmo2 17059 prmgaplem3 17072 lt6abl 19918 2logb9irr 26837 2logb3irr 26839 ppi2 27211 cht2 27213 1sgm2ppw 27241 perfectlem1 27270 perfectlem2 27271 perfect 27272 bpos1 27324 lgs2 27355 lgsdir2 27371 lgseisenlem2 27417 lgsquad2lem1 27425 lgsquad2lem2 27426 lgsquad3 27428 m1lgs 27429 2lgs 27448 2lgsoddprm 27457 dchrisum0flb 27551 numclwwlk5lem 30535 constrext2chnlem 34008 2sqr3minply 34038 2sqr3nconstr 34039 cos9thpinconstrlem2 34048 hgt750lemd 34906 12gcd5e1 42584 fltne 43190 flt4lem5a 43198 flt4lem5b 43199 flt4lem5c 43200 flt4lem5d 43201 flt4lem5e 43202 goldbachthlem2 48119 odz2prm2pw 48136 fmtnoprmfac1 48138 fmtnoprmfac2 48140 lighneallem2 48179 lighneallem3 48180 lighneallem4 48183 proththd 48187 ppivalnnnprm 48201 isodd7 48251 gcd2odd1 48254 perfectALTV 48309 7gbow 48358 sbgoldbalt 48367 sgoldbeven3prm 48369 sbgoldbo 48373 nnsum3primes4 48374 nnsum3primesle9 48380 zlmodzxznm 49083 |
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