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Mirrors > Home > MPE Home > Th. List > divge0 | Structured version Visualization version GIF version |
Description: The ratio of nonnegative and positive numbers is nonnegative. (Contributed by NM, 27-Sep-1999.) |
Ref | Expression |
---|---|
divge0 | ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝐵 ∈ ℝ ∧ 0 < 𝐵)) → 0 ≤ (𝐴 / 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ge0div 11509 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 0 < 𝐵) → (0 ≤ 𝐴 ↔ 0 ≤ (𝐴 / 𝐵))) | |
2 | 1 | biimpd 231 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 0 < 𝐵) → (0 ≤ 𝐴 → 0 ≤ (𝐴 / 𝐵))) |
3 | 2 | 3exp 1115 | . . . 4 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ ℝ → (0 < 𝐵 → (0 ≤ 𝐴 → 0 ≤ (𝐴 / 𝐵))))) |
4 | 3 | com34 91 | . . 3 ⊢ (𝐴 ∈ ℝ → (𝐵 ∈ ℝ → (0 ≤ 𝐴 → (0 < 𝐵 → 0 ≤ (𝐴 / 𝐵))))) |
5 | 4 | com23 86 | . 2 ⊢ (𝐴 ∈ ℝ → (0 ≤ 𝐴 → (𝐵 ∈ ℝ → (0 < 𝐵 → 0 ≤ (𝐴 / 𝐵))))) |
6 | 5 | imp43 430 | 1 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝐵 ∈ ℝ ∧ 0 < 𝐵)) → 0 ≤ (𝐴 / 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∧ w3a 1083 ∈ wcel 2114 class class class wbr 5068 (class class class)co 7158 ℝcr 10538 0cc0 10539 < clt 10677 ≤ cle 10678 / cdiv 11299 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-po 5476 df-so 5477 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-div 11300 |
This theorem is referenced by: mulge0b 11512 ledivp1 11544 divge0i 11551 divge0d 12474 divelunit 12883 adddivflid 13191 fldiv4p1lem1div2 13208 fldiv 13231 modid 13267 modmuladdnn0 13286 expnbnd 13596 sqrtdiv 14627 sqreulem 14721 efcllem 15433 ege2le3 15445 flodddiv4 15766 hashgcdlem 16127 fldivp1 16235 4sqlem14 16296 odmodnn0 18670 prmirredlem 20642 icopnfcnv 23548 lebnumii 23572 nmoleub2lem3 23721 ncvs1 23763 minveclem4 24037 mbfi1fseqlem1 24318 mbfi1fseqlem5 24322 radcnvlem1 25003 cxpaddle 25335 log2tlbnd 25525 birthdaylem3 25533 jensenlem2 25567 amgm 25570 basellem3 25662 ppiub 25782 logfac2 25795 gausslemma2dlem0d 25937 chto1ub 26054 vmadivsum 26060 rpvmasumlem 26065 dchrvmasumlem2 26076 dchrvmasumiflem1 26079 dchrisum0fno1 26089 dchrisum0re 26091 mulog2sumlem2 26113 selberg2lem 26128 pntrmax 26142 pntrsumo1 26143 pntpbnd1 26164 ostth2lem2 26212 axpaschlem 26728 axcontlem2 26753 nv1 28454 siii 28632 minvecolem4 28659 norm1 29028 strlem1 30029 unitdivcld 31146 cvmliftlem2 32535 cvmliftlem10 32543 cvmliftlem13 32545 snmlff 32578 poimirlem29 34923 poimirlem30 34924 poimirlem31 34925 poimirlem32 34926 pellexlem1 39433 pellexlem6 39438 jm2.22 39599 jm2.23 39600 stoweidlem36 42328 stoweidlem38 42330 nn0eo 44595 dignn0flhalf 44685 |
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