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Mirrors > Home > MPE Home > Th. List > addcom | Structured version Visualization version GIF version |
Description: Addition commutes. This used to be one of our complex number axioms, until it was found to be dependent on the others. Based on ideas by Eric Schmidt. (Contributed by Scott Fenton, 3-Jan-2013.) |
Ref | Expression |
---|---|
addcom | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) = (𝐵 + 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1cnd 10639 | . . . . . . . 8 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 1 ∈ ℂ) | |
2 | 1, 1 | addcld 10663 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (1 + 1) ∈ ℂ) |
3 | simpl 485 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
4 | simpr 487 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐵 ∈ ℂ) | |
5 | 2, 3, 4 | adddid 10668 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((1 + 1) · (𝐴 + 𝐵)) = (((1 + 1) · 𝐴) + ((1 + 1) · 𝐵))) |
6 | 3, 4 | addcld 10663 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) ∈ ℂ) |
7 | 1p1times 10814 | . . . . . . 7 ⊢ ((𝐴 + 𝐵) ∈ ℂ → ((1 + 1) · (𝐴 + 𝐵)) = ((𝐴 + 𝐵) + (𝐴 + 𝐵))) | |
8 | 6, 7 | syl 17 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((1 + 1) · (𝐴 + 𝐵)) = ((𝐴 + 𝐵) + (𝐴 + 𝐵))) |
9 | 1p1times 10814 | . . . . . . 7 ⊢ (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴)) | |
10 | 1p1times 10814 | . . . . . . 7 ⊢ (𝐵 ∈ ℂ → ((1 + 1) · 𝐵) = (𝐵 + 𝐵)) | |
11 | 9, 10 | oveqan12d 7178 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((1 + 1) · 𝐴) + ((1 + 1) · 𝐵)) = ((𝐴 + 𝐴) + (𝐵 + 𝐵))) |
12 | 5, 8, 11 | 3eqtr3rd 2868 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐴) + (𝐵 + 𝐵)) = ((𝐴 + 𝐵) + (𝐴 + 𝐵))) |
13 | 3, 3 | addcld 10663 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐴) ∈ ℂ) |
14 | 13, 4, 4 | addassd 10666 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐴 + 𝐴) + 𝐵) + 𝐵) = ((𝐴 + 𝐴) + (𝐵 + 𝐵))) |
15 | 6, 3, 4 | addassd 10666 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐴 + 𝐵) + 𝐴) + 𝐵) = ((𝐴 + 𝐵) + (𝐴 + 𝐵))) |
16 | 12, 14, 15 | 3eqtr4d 2869 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐴 + 𝐴) + 𝐵) + 𝐵) = (((𝐴 + 𝐵) + 𝐴) + 𝐵)) |
17 | 13, 4 | addcld 10663 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐴) + 𝐵) ∈ ℂ) |
18 | 6, 3 | addcld 10663 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐵) + 𝐴) ∈ ℂ) |
19 | addcan2 10828 | . . . . 5 ⊢ ((((𝐴 + 𝐴) + 𝐵) ∈ ℂ ∧ ((𝐴 + 𝐵) + 𝐴) ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((((𝐴 + 𝐴) + 𝐵) + 𝐵) = (((𝐴 + 𝐵) + 𝐴) + 𝐵) ↔ ((𝐴 + 𝐴) + 𝐵) = ((𝐴 + 𝐵) + 𝐴))) | |
20 | 17, 18, 4, 19 | syl3anc 1367 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((((𝐴 + 𝐴) + 𝐵) + 𝐵) = (((𝐴 + 𝐵) + 𝐴) + 𝐵) ↔ ((𝐴 + 𝐴) + 𝐵) = ((𝐴 + 𝐵) + 𝐴))) |
21 | 16, 20 | mpbid 234 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐴) + 𝐵) = ((𝐴 + 𝐵) + 𝐴)) |
22 | 3, 3, 4 | addassd 10666 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐴) + 𝐵) = (𝐴 + (𝐴 + 𝐵))) |
23 | 3, 4, 3 | addassd 10666 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐵) + 𝐴) = (𝐴 + (𝐵 + 𝐴))) |
24 | 21, 22, 23 | 3eqtr3d 2867 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + (𝐴 + 𝐵)) = (𝐴 + (𝐵 + 𝐴))) |
25 | 4, 3 | addcld 10663 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 + 𝐴) ∈ ℂ) |
26 | addcan 10827 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐴 + 𝐵) ∈ ℂ ∧ (𝐵 + 𝐴) ∈ ℂ) → ((𝐴 + (𝐴 + 𝐵)) = (𝐴 + (𝐵 + 𝐴)) ↔ (𝐴 + 𝐵) = (𝐵 + 𝐴))) | |
27 | 3, 6, 25, 26 | syl3anc 1367 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + (𝐴 + 𝐵)) = (𝐴 + (𝐵 + 𝐴)) ↔ (𝐴 + 𝐵) = (𝐵 + 𝐴))) |
28 | 24, 27 | mpbid 234 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) = (𝐵 + 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 = wceq 1536 ∈ wcel 2113 (class class class)co 7159 ℂcc 10538 1c1 10541 + caddc 10543 · cmul 10545 |
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 |
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-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-ov 7162 df-er 8292 df-en 8513 df-dom 8514 df-sdom 8515 df-pnf 10680 df-mnf 10681 df-ltxr 10683 |
This theorem is referenced by: addcomi 10834 ltaddnegr 10859 add12 10860 add32 10861 add42 10864 subsub23 10894 pncan2 10896 addsub 10900 addsub12 10902 addsubeq4 10904 sub32 10923 pnpcan2 10929 ppncan 10931 sub4 10934 negsubdi2 10948 ltaddsub2 11118 leaddsub2 11120 leltadd 11127 ltaddpos2 11134 addge02 11154 conjmul 11360 recp1lt1 11541 recreclt 11542 avgle1 11880 avgle2 11881 avgle 11882 nn0nnaddcl 11931 xaddcom 12636 fzen 12927 fzshftral 12998 fzo0addelr 13095 elfzoext 13097 flzadd 13199 addmodidr 13291 modadd2mod 13292 nn0ennn 13350 seradd 13415 bernneq2 13594 ccatrn 13946 ccatalpha 13950 revccat 14131 2cshwcom 14181 shftval2 14437 shftval4 14439 crim 14477 absmax 14692 climshft2 14942 summolem3 15074 binom1dif 15191 isumshft 15197 arisum 15218 mertenslem1 15243 bpolydiflem 15411 addcos 15530 demoivreALT 15557 dvdsaddr 15656 sumodd 15742 divalglem4 15750 divalgb 15758 gcdaddm 15876 hashdvds 16115 phiprmpw 16116 pythagtriplem2 16157 prmgaplem7 16396 mulgnndir 18259 cnaddablx 18991 cnaddabl 18992 zaddablx 18995 cncrng 20569 ioo2bl 23404 icopnfcnv 23549 uniioombllem3 24189 fta1glem1 24762 plyremlem 24896 fta1lem 24899 vieta1lem1 24902 vieta1lem2 24903 aaliou3lem2 24935 dvradcnv 25012 pserdv2 25021 reeff1olem 25037 ptolemy 25085 logcnlem4 25231 cxpsqrt 25289 atandm2 25458 atandm4 25460 atanlogsublem 25496 2efiatan 25499 dvatan 25516 birthdaylem2 25533 emcllem2 25577 fsumharmonic 25592 wilthlem1 25648 wilthlem2 25649 basellem8 25668 1sgmprm 25778 perfectlem2 25809 pntibndlem1 26168 pntibndlem2 26170 pntlemd 26173 pntlemc 26174 eucrctshift 28025 cnaddabloOLD 28361 cdj3lem3b 30220 isarchi3 30820 archiabllem2c 30828 cos2h 34887 tan2h 34888 eldioph2lem1 39363 addcomgi 40794 fz0addcom 43524 epoo 43875 perfectALTVlem2 43894 sbgoldbaltlem2 43952 |
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