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Mirrors > Home > MPE Home > Th. List > difrp | Structured version Visualization version GIF version |
Description: Two ways to say one number is less than another. (Contributed by Mario Carneiro, 21-May-2014.) |
Ref | Expression |
---|---|
difrp | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ (𝐵 − 𝐴) ∈ ℝ+)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | posdif 11747 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) | |
2 | resubcl 11564 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐵 − 𝐴) ∈ ℝ) | |
3 | 2 | ancoms 457 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐵 − 𝐴) ∈ ℝ) |
4 | elrp 13023 | . . . 4 ⊢ ((𝐵 − 𝐴) ∈ ℝ+ ↔ ((𝐵 − 𝐴) ∈ ℝ ∧ 0 < (𝐵 − 𝐴))) | |
5 | 4 | baib 534 | . . 3 ⊢ ((𝐵 − 𝐴) ∈ ℝ → ((𝐵 − 𝐴) ∈ ℝ+ ↔ 0 < (𝐵 − 𝐴))) |
6 | 3, 5 | syl 17 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐵 − 𝐴) ∈ ℝ+ ↔ 0 < (𝐵 − 𝐴))) |
7 | 1, 6 | bitr4d 281 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ (𝐵 − 𝐴) ∈ ℝ+)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∈ wcel 2099 class class class wbr 5145 (class class class)co 7415 ℝcr 11147 0cc0 11148 < clt 11288 − cmin 11484 ℝ+crp 13021 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2697 ax-sep 5296 ax-nul 5303 ax-pow 5361 ax-pr 5425 ax-un 7737 ax-resscn 11205 ax-1cn 11206 ax-icn 11207 ax-addcl 11208 ax-addrcl 11209 ax-mulcl 11210 ax-mulrcl 11211 ax-mulcom 11212 ax-addass 11213 ax-mulass 11214 ax-distr 11215 ax-i2m1 11216 ax-1ne0 11217 ax-1rid 11218 ax-rnegex 11219 ax-rrecex 11220 ax-cnre 11221 ax-pre-lttri 11222 ax-pre-lttrn 11223 ax-pre-ltadd 11224 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2704 df-cleq 2718 df-clel 2803 df-nfc 2878 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3366 df-rab 3421 df-v 3466 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4325 df-if 4526 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4908 df-br 5146 df-opab 5208 df-mpt 5229 df-id 5572 df-po 5586 df-so 5587 df-xp 5680 df-rel 5681 df-cnv 5682 df-co 5683 df-dm 5684 df-rn 5685 df-res 5686 df-ima 5687 df-iota 6497 df-fun 6547 df-fn 6548 df-f 6549 df-f1 6550 df-fo 6551 df-f1o 6552 df-fv 6553 df-riota 7371 df-ov 7418 df-oprab 7419 df-mpo 7420 df-er 8725 df-en 8966 df-dom 8967 df-sdom 8968 df-pnf 11290 df-mnf 11291 df-ltxr 11293 df-sub 11486 df-neg 11487 df-rp 13022 |
This theorem is referenced by: xralrple 13231 lincmb01cmp 13519 iccf1o 13520 expmulnbnd 14246 fsumlt 15798 expcnv 15862 blssps 24417 blss 24418 icchmeo 24952 icchmeoOLD 24953 icopnfcnv 24954 icopnfhmeo 24955 ivthlem2 25468 ivthlem3 25469 c1liplem1 26016 lhop1lem 26033 ftc1lem4 26061 aaliou3lem7 26373 abelthlem7 26464 cosordlem 26553 logdivlti 26643 cxpaddlelem 26775 atantan 26947 birthdaylem3 26977 lgamgulmlem2 27054 lgamgulmlem3 27055 chtppilimlem2 27499 pntrlog2bndlem5 27606 pntlemd 27619 pntlemc 27620 ostth2lem1 27643 ttgcontlem1 28814 lt2addrd 32657 signsplypnf 34408 knoppndvlem20 36246 ftc1cnnclem 37404 fltnltalem 42351 fltnlta 42352 cvgdvgrat 44023 sge0gtfsumgt 46099 hoidmvlelem3 46253 vonioolem1 46336 smfmullem1 46447 smfmullem2 46448 smfmullem3 46449 |
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