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Mirrors > Home > MPE Home > Th. List > posdif | Structured version Visualization version GIF version |
Description: Comparison of two numbers whose difference is positive. (Contributed by NM, 17-Nov-2004.) |
Ref | Expression |
---|---|
posdif | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | resubcl 11294 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐵 − 𝐴) ∈ ℝ) | |
2 | 1 | ancoms 459 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐵 − 𝐴) ∈ ℝ) |
3 | simpl 483 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → 𝐴 ∈ ℝ) | |
4 | ltaddpos 11474 | . . 3 ⊢ (((𝐵 − 𝐴) ∈ ℝ ∧ 𝐴 ∈ ℝ) → (0 < (𝐵 − 𝐴) ↔ 𝐴 < (𝐴 + (𝐵 − 𝐴)))) | |
5 | 2, 3, 4 | syl2anc 584 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (0 < (𝐵 − 𝐴) ↔ 𝐴 < (𝐴 + (𝐵 − 𝐴)))) |
6 | recn 10970 | . . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
7 | recn 10970 | . . . 4 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℂ) | |
8 | pncan3 11238 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + (𝐵 − 𝐴)) = 𝐵) | |
9 | 6, 7, 8 | syl2an 596 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + (𝐵 − 𝐴)) = 𝐵) |
10 | 9 | breq2d 5087 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < (𝐴 + (𝐵 − 𝐴)) ↔ 𝐴 < 𝐵)) |
11 | 5, 10 | bitr2d 279 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2107 class class class wbr 5075 (class class class)co 7284 ℂcc 10878 ℝcr 10879 0cc0 10880 + caddc 10883 < clt 11018 − cmin 11214 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2710 ax-sep 5224 ax-nul 5231 ax-pow 5289 ax-pr 5353 ax-un 7597 ax-resscn 10937 ax-1cn 10938 ax-icn 10939 ax-addcl 10940 ax-addrcl 10941 ax-mulcl 10942 ax-mulrcl 10943 ax-mulcom 10944 ax-addass 10945 ax-mulass 10946 ax-distr 10947 ax-i2m1 10948 ax-1ne0 10949 ax-1rid 10950 ax-rnegex 10951 ax-rrecex 10952 ax-cnre 10953 ax-pre-lttri 10954 ax-pre-lttrn 10955 ax-pre-ltadd 10956 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3073 df-rab 3074 df-v 3435 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4841 df-br 5076 df-opab 5138 df-mpt 5159 df-id 5490 df-po 5504 df-so 5505 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-iota 6395 df-fun 6439 df-fn 6440 df-f 6441 df-f1 6442 df-fo 6443 df-f1o 6444 df-fv 6445 df-riota 7241 df-ov 7287 df-oprab 7288 df-mpo 7289 df-er 8507 df-en 8743 df-dom 8744 df-sdom 8745 df-pnf 11020 df-mnf 11021 df-ltxr 11023 df-sub 11216 df-neg 11217 |
This theorem is referenced by: posdifi 11534 posdifd 11571 nnsub 12026 nn0sub 12292 znnsub 12375 rpnnen1lem5 12730 difrp 12777 qbtwnre 12942 eluzgtdifelfzo 13458 subfzo0 13518 expnbnd 13956 expmulnbnd 13959 pfxccatin12lem3 14454 eflt 15835 cos01gt0 15909 ndvdsadd 16128 nn0seqcvgd 16284 prmgaplem7 16767 cshwshashlem2 16807 dvcvx 25193 abelthlem7 25606 sinq12gt0 25673 cosq14gt0 25676 cosne0 25694 tanregt0 25704 logdivlti 25784 logcnlem4 25809 scvxcvx 26144 perfectlem2 26387 rplogsumlem2 26642 dchrisum0flblem1 26665 crctcshwlkn0lem3 28186 crctcshwlkn0lem7 28190 mblfinlem3 35825 mblfinlem4 35826 dvasin 35870 geomcau 35926 bfp 35991 perfectALTVlem2 45185 |
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