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Mirrors > Home > MPE Home > Th. List > leltadd | Structured version Visualization version GIF version |
Description: Adding both sides of two orderings. (Contributed by NM, 15-Aug-2008.) |
Ref | Expression |
---|---|
leltadd | ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 < 𝐷) → (𝐴 + 𝐵) < (𝐶 + 𝐷))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ltleadd 10511 | . . . . 5 ⊢ (((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐷 ∈ ℝ ∧ 𝐶 ∈ ℝ)) → ((𝐵 < 𝐷 ∧ 𝐴 ≤ 𝐶) → (𝐵 + 𝐴) < (𝐷 + 𝐶))) | |
2 | 1 | ancomsd 470 | . . . 4 ⊢ (((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐷 ∈ ℝ ∧ 𝐶 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 < 𝐷) → (𝐵 + 𝐴) < (𝐷 + 𝐶))) |
3 | 2 | ancom2s 844 | . . 3 ⊢ (((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 < 𝐷) → (𝐵 + 𝐴) < (𝐷 + 𝐶))) |
4 | 3 | ancom1s 847 | . 2 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 < 𝐷) → (𝐵 + 𝐴) < (𝐷 + 𝐶))) |
5 | recn 10026 | . . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
6 | recn 10026 | . . . 4 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℂ) | |
7 | addcom 10222 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) = (𝐵 + 𝐴)) | |
8 | 5, 6, 7 | syl2an 494 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 + 𝐵) = (𝐵 + 𝐴)) |
9 | recn 10026 | . . . 4 ⊢ (𝐶 ∈ ℝ → 𝐶 ∈ ℂ) | |
10 | recn 10026 | . . . 4 ⊢ (𝐷 ∈ ℝ → 𝐷 ∈ ℂ) | |
11 | addcom 10222 | . . . 4 ⊢ ((𝐶 ∈ ℂ ∧ 𝐷 ∈ ℂ) → (𝐶 + 𝐷) = (𝐷 + 𝐶)) | |
12 | 9, 10, 11 | syl2an 494 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ) → (𝐶 + 𝐷) = (𝐷 + 𝐶)) |
13 | 8, 12 | breqan12d 4669 | . 2 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ)) → ((𝐴 + 𝐵) < (𝐶 + 𝐷) ↔ (𝐵 + 𝐴) < (𝐷 + 𝐶))) |
14 | 4, 13 | sylibrd 249 | 1 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 < 𝐷) → (𝐴 + 𝐵) < (𝐶 + 𝐷))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 = wceq 1483 ∈ wcel 1990 class class class wbr 4653 (class class class)co 6650 ℂcc 9934 ℝcr 9935 + caddc 9939 < clt 10074 ≤ cle 10075 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-po 5035 df-so 5036 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 |
This theorem is referenced by: lt2add 10513 addgegt0 10515 leltaddd 10649 fldiv 12659 dp2lt10 29591 |
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