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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 12992 | . 2 ⊢ (𝜑 → (𝐵 ∈ ℝ ∧ 0 < 𝐵)) |
| 5 | divge0 12025 | . 2 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝐵 ∈ ℝ ∧ 0 < 𝐵)) → 0 ≤ (𝐴 / 𝐵)) | |
| 6 | 1, 2, 4, 5 | syl21anc 838 | 1 ⊢ (𝜑 → 0 ≤ (𝐴 / 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 class class class wbr 5086 (class class class)co 7367 ℝcr 11037 0cc0 11038 < clt 11179 ≤ cle 11180 / cdiv 11807 ℝ+crp 12942 |
| 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 5232 ax-nul 5242 ax-pow 5308 ax-pr 5376 ax-un 7689 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 |
| 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 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6455 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-rp 12943 |
| This theorem is referenced by: iseralt 15647 nn0ehalf 16347 nn0oddm1d2 16354 bitsfzo 16404 bitsmod 16405 iserodd 16806 icopnfcnv 24909 logdiflbnd 26958 lgamgulmlem3 26994 chpo1ubb 27444 vmadivsumb 27446 rpvmasumlem 27450 dchrisumlem1 27452 dchrvmasumlem2 27461 rplogsum 27490 dirith2 27491 mulog2sumlem2 27498 vmalogdivsum2 27501 2vmadivsumlem 27503 selbergb 27512 selberg2b 27515 selberg4lem1 27523 pntrlog2bndlem2 27541 pntrlog2bndlem4 27543 pntrlog2bndlem5 27544 pntrlog2bndlem6 27546 pntrlog2bnd 27547 pntibndlem2 27554 ttgcontlem1 28953 constrresqrtcl 33921 sqsscirc1 34052 faclimlem1 35925 knoppndvlem14 36785 itg2addnclem2 37993 geomcau 38080 3lexlogpow5ineq2 42494 aks4d1p1p7 42513 aks6d1c2lem4 42566 aks6d1c7lem1 42619 areaquad 43644 sqrtcvallem2 44064 sqrtcvallem4 44066 stirlinglem11 46512 stirlinglem12 46513 fourierdlem26 46561 fourierdlem30 46565 fourierdlem47 46581 sge0ad2en 46859 eenglngeehlnmlem2 49208 |
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