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| Mirrors > Home > MPE Home > Th. List > divge0d | Structured version Visualization version GIF version | ||
| Description: The ratio of nonnegative and positive numbers is nonnegative. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| rpgecld.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| rpgecld.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ+) |
| divge0d.3 | ⊢ (𝜑 → 0 ≤ 𝐴) |
| Ref | Expression |
|---|---|
| divge0d | ⊢ (𝜑 → 0 ≤ (𝐴 / 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpgecld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | divge0d.3 | . 2 ⊢ (𝜑 → 0 ≤ 𝐴) | |
| 3 | rpgecld.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ+) | |
| 4 | 3 | rpregt0d 13140 | . 2 ⊢ (𝜑 → (𝐵 ∈ ℝ ∧ 0 < 𝐵)) |
| 5 | divge0 12156 | . 2 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝐵 ∈ ℝ ∧ 0 < 𝐵)) → 0 ≤ (𝐴 / 𝐵)) | |
| 6 | 1, 2, 4, 5 | syl21anc 851 | 1 ⊢ (𝜑 → 0 ≤ (𝐴 / 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 class class class wbr 5102 (class class class)co 7408 ℝcr 11171 0cc0 11172 < clt 11315 ≤ cle 11316 / cdiv 11943 ℝ+crp 13090 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 ax-resscn 11229 ax-1cn 11230 ax-icn 11231 ax-addcl 11232 ax-addrcl 11233 ax-mulcl 11234 ax-mulrcl 11235 ax-mulcom 11236 ax-addass 11237 ax-mulass 11238 ax-distr 11239 ax-i2m1 11240 ax-1ne0 11241 ax-1rid 11242 ax-rnegex 11243 ax-rrecex 11244 ax-cnre 11245 ax-pre-lttri 11246 ax-pre-lttrn 11247 ax-pre-ltadd 11248 ax-pre-mulgt0 11249 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-er 8695 df-en 8952 df-dom 8953 df-sdom 8954 df-pnf 11317 df-mnf 11318 df-xr 11319 df-ltxr 11320 df-le 11321 df-sub 11515 df-neg 11516 df-div 11944 df-rp 13091 |
| This theorem is used by: iseralt 15820 nn0ehalf 16516 nn0oddm1d2 16523 bitsfzo 16573 bitsmod 16574 iserodd 16975 icopnfcnv 25225 logdiflbnd 27286 lgamgulmlem3 27322 chpo1ubb 27772 vmadivsumb 27774 rpvmasumlem 27778 dchrisumlem1 27780 dchrvmasumlem2 27789 rplogsum 27818 dirith2 27819 mulog2sumlem2 27826 vmalogdivsum2 27829 2vmadivsumlem 27831 selbergb 27840 selberg2b 27843 selberg4lem1 27851 pntrlog2bndlem2 27869 pntrlog2bndlem4 27871 pntrlog2bndlem5 27872 pntrlog2bndlem6 27874 pntrlog2bnd 27875 pntibndlem2 27882 ttgcontlem1 29396 constrresqrtcl 34343 sqsscirc1 34474 faclimlem1 36429 knoppndvlem14 37313 itg2addnclem2 38510 geomcau 38613 3lexlogpow5ineq2 43025 aks4d1p1p7 43044 aks6d1c2lem4 43097 aks6d1c7lem1 43150 areaquad 44161 sqrtcvallem2 44581 sqrtcvallem4 44583 stirlinglem11 47016 stirlinglem12 47017 fourierdlem26 47065 fourierdlem30 47069 fourierdlem47 47085 sge0ad2en 47363 eenglngeehlnmlem2 49772 |
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