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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 11510 | . . . . . 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 2113 class class class wbr 5069 (class class class)co 7159 ℝcr 10539 0cc0 10540 < clt 10678 ≤ cle 10679 / cdiv 11300 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 ax-resscn 10597 ax-1cn 10598 ax-icn 10599 ax-addcl 10600 ax-addrcl 10601 ax-mulcl 10602 ax-mulrcl 10603 ax-mulcom 10604 ax-addass 10605 ax-mulass 10606 ax-distr 10607 ax-i2m1 10608 ax-1ne0 10609 ax-1rid 10610 ax-rnegex 10611 ax-rrecex 10612 ax-cnre 10613 ax-pre-lttri 10614 ax-pre-lttrn 10615 ax-pre-ltadd 10616 ax-pre-mulgt0 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-nel 3127 df-ral 3146 df-rex 3147 df-reu 3148 df-rmo 3149 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-br 5070 df-opab 5132 df-mpt 5150 df-id 5463 df-po 5477 df-so 5478 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7117 df-ov 7162 df-oprab 7163 df-mpo 7164 df-er 8292 df-en 8513 df-dom 8514 df-sdom 8515 df-pnf 10680 df-mnf 10681 df-xr 10682 df-ltxr 10683 df-le 10684 df-sub 10875 df-neg 10876 df-div 11301 |
This theorem is referenced by: mulge0b 11513 ledivp1 11545 divge0i 11552 divge0d 12474 divelunit 12883 adddivflid 13191 fldiv4p1lem1div2 13208 fldiv 13231 modid 13267 modmuladdnn0 13286 expnbnd 13596 sqrtdiv 14628 sqreulem 14722 efcllem 15434 ege2le3 15446 flodddiv4 15767 hashgcdlem 16128 fldivp1 16236 4sqlem14 16297 odmodnn0 18671 prmirredlem 20643 icopnfcnv 23549 lebnumii 23573 nmoleub2lem3 23722 ncvs1 23764 minveclem4 24038 mbfi1fseqlem1 24319 mbfi1fseqlem5 24323 radcnvlem1 25004 cxpaddle 25336 log2tlbnd 25526 birthdaylem3 25534 jensenlem2 25568 amgm 25571 basellem3 25663 ppiub 25783 logfac2 25796 gausslemma2dlem0d 25938 chto1ub 26055 vmadivsum 26061 rpvmasumlem 26066 dchrvmasumlem2 26077 dchrvmasumiflem1 26080 dchrisum0fno1 26090 dchrisum0re 26092 mulog2sumlem2 26114 selberg2lem 26129 pntrmax 26143 pntrsumo1 26144 pntpbnd1 26165 ostth2lem2 26213 axpaschlem 26729 axcontlem2 26754 nv1 28455 siii 28633 minvecolem4 28660 norm1 29029 strlem1 30030 unitdivcld 31148 cvmliftlem2 32537 cvmliftlem10 32545 cvmliftlem13 32547 snmlff 32580 poimirlem29 34925 poimirlem30 34926 poimirlem31 34927 poimirlem32 34928 pellexlem1 39432 pellexlem6 39437 jm2.22 39598 jm2.23 39599 stoweidlem36 42328 stoweidlem38 42330 nn0eo 44595 dignn0flhalf 44685 |
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