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| Mirrors > Home > MPE Home > Th. List > nn0nlt0 | Structured version Visualization version GIF version | ||
| Description: A nonnegative integer is not less than zero. (Contributed by NM, 9-May-2004.) (Revised by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| nn0nlt0 | ⊢ (𝐴 ∈ ℕ0 → ¬ 𝐴 < 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0ge0 12517 | . 2 ⊢ (𝐴 ∈ ℕ0 → 0 ≤ 𝐴) | |
| 2 | 0re 11198 | . . 3 ⊢ 0 ∈ ℝ | |
| 3 | nn0re 12501 | . . 3 ⊢ (𝐴 ∈ ℕ0 → 𝐴 ∈ ℝ) | |
| 4 | lenlt 11276 | . . 3 ⊢ ((0 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (0 ≤ 𝐴 ↔ ¬ 𝐴 < 0)) | |
| 5 | 2, 3, 4 | sylancr 598 | . 2 ⊢ (𝐴 ∈ ℕ0 → (0 ≤ 𝐴 ↔ ¬ 𝐴 < 0)) |
| 6 | 1, 5 | mpbid 235 | 1 ⊢ (𝐴 ∈ ℕ0 → ¬ 𝐴 < 0) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∈ wcel 2145 class class class wbr 5104 ℝcr 11087 0cc0 11088 < clt 11231 ≤ cle 11232 ℕ0cn0 12492 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-nn 12222 df-n0 12493 |
| This theorem is referenced by: nn0sub 12542 expneg 14093 sgnmulsgn 15134 nthruz 16297 efgsfo 19797 efgred 19806 psdmul 22286 fvmptnn04ifa 22964 deg1lt0 26205 lgsneg1 27440 wlkv0 29904 sgnmulsgp 33084 relexpxpmin 44300 ztprmneprm 48979 |
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