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| Mirrors > Home > MPE Home > Th. List > eluz2b3 | Structured version Visualization version GIF version | ||
| Description: Two ways to say "an integer greater than or equal to 2". (Contributed by Paul Chapman, 23-Nov-2012.) |
| Ref | Expression |
|---|---|
| eluz2b3 | ⊢ (𝑁 ∈ (ℤ≥‘2) ↔ (𝑁 ∈ ℕ ∧ 𝑁 ≠ 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluz2b2 12944 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) ↔ (𝑁 ∈ ℕ ∧ 1 < 𝑁)) | |
| 2 | nngt1ne1 12264 | . . 3 ⊢ (𝑁 ∈ ℕ → (1 < 𝑁 ↔ 𝑁 ≠ 1)) | |
| 3 | 2 | pm5.32i 584 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 1 < 𝑁) ↔ (𝑁 ∈ ℕ ∧ 𝑁 ≠ 1)) |
| 4 | 1, 3 | bitri 278 | 1 ⊢ (𝑁 ∈ (ℤ≥‘2) ↔ (𝑁 ∈ ℕ ∧ 𝑁 ≠ 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∧ wa 400 ∈ wcel 2149 ≠ wne 2964 class class class wbr 5113 ‘cfv 6537 1c1 11100 < clt 11242 ℕcn 12232 2c2 12294 ℤ≥cuz 12861 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7862 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-nn 12233 df-2 12302 df-n0 12504 df-z 12591 df-uz 12862 |
| This theorem is referenced by: 1nuz2 12947 elnn1uz2 12948 nn01to3 12964 relexpuzrel 15088 nno 16439 ncoprmgcdne1b 16707 isprm2 16739 isprm4 16741 rpexp 16780 dfphi2 16832 dvdsprmpweqnn 16944 expnprm 16961 prmirredlem 21590 domnchr 21650 ovolicc1 25643 logbgcd1irr 26924 musum 27320 lgsne0 27464 2sqlem8a 27554 2sqlem8 27555 2sqlem9 27556 2sqcoprm 27564 frgrregord013 30686 cos9thpiminplylem2 34117 ballotlemic 34841 ballotlem1c 34842 signstfveq0a 34907 subfacp1lem3 35572 stoweidlem14 46619 lighneallem3 48247 lighneallem4 48250 eluz2cnn0n1 49175 |
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