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Mirrors > Home > MPE Home > Th. List > addcompr | Structured version Visualization version GIF version |
Description: Addition of positive reals is commutative. Proposition 9-3.5(ii) of [Gleason] p. 123. (Contributed by NM, 19-Nov-1995.) (New usage is discouraged.) |
Ref | Expression |
---|---|
addcompr | ⊢ (𝐴 +P 𝐵) = (𝐵 +P 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | plpv 10432 | . . 3 ⊢ ((𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝐴 +P 𝐵) = {𝑥 ∣ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)}) | |
2 | plpv 10432 | . . . . 5 ⊢ ((𝐵 ∈ P ∧ 𝐴 ∈ P) → (𝐵 +P 𝐴) = {𝑥 ∣ ∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +Q 𝑧)}) | |
3 | addcomnq 10373 | . . . . . . . . 9 ⊢ (𝑦 +Q 𝑧) = (𝑧 +Q 𝑦) | |
4 | 3 | eqeq2i 2834 | . . . . . . . 8 ⊢ (𝑥 = (𝑦 +Q 𝑧) ↔ 𝑥 = (𝑧 +Q 𝑦)) |
5 | 4 | 2rexbii 3248 | . . . . . . 7 ⊢ (∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +Q 𝑧) ↔ ∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +Q 𝑦)) |
6 | rexcom 3355 | . . . . . . 7 ⊢ (∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +Q 𝑦) ↔ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)) | |
7 | 5, 6 | bitri 277 | . . . . . 6 ⊢ (∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +Q 𝑧) ↔ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)) |
8 | 7 | abbii 2886 | . . . . 5 ⊢ {𝑥 ∣ ∃𝑦 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +Q 𝑧)} = {𝑥 ∣ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)} |
9 | 2, 8 | syl6eq 2872 | . . . 4 ⊢ ((𝐵 ∈ P ∧ 𝐴 ∈ P) → (𝐵 +P 𝐴) = {𝑥 ∣ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)}) |
10 | 9 | ancoms 461 | . . 3 ⊢ ((𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝐵 +P 𝐴) = {𝑥 ∣ ∃𝑧 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑥 = (𝑧 +Q 𝑦)}) |
11 | 1, 10 | eqtr4d 2859 | . 2 ⊢ ((𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝐴 +P 𝐵) = (𝐵 +P 𝐴)) |
12 | dmplp 10434 | . . 3 ⊢ dom +P = (P × P) | |
13 | 12 | ndmovcom 7335 | . 2 ⊢ (¬ (𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝐴 +P 𝐵) = (𝐵 +P 𝐴)) |
14 | 11, 13 | pm2.61i 184 | 1 ⊢ (𝐴 +P 𝐵) = (𝐵 +P 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 398 = wceq 1537 ∈ wcel 2114 {cab 2799 ∃wrex 3139 (class class class)co 7156 +Q cplq 10277 Pcnp 10281 +P cpp 10283 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-inf2 9104 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-1st 7689 df-2nd 7690 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-1o 8102 df-oadd 8106 df-omul 8107 df-er 8289 df-ni 10294 df-pli 10295 df-mi 10296 df-lti 10297 df-plpq 10330 df-enq 10333 df-nq 10334 df-erq 10335 df-plq 10336 df-1nq 10338 df-np 10403 df-plp 10405 |
This theorem is referenced by: enrer 10485 addcmpblnr 10491 mulcmpblnrlem 10492 ltsrpr 10499 addcomsr 10509 mulcomsr 10511 mulasssr 10512 distrsr 10513 ltsosr 10516 0lt1sr 10517 0idsr 10519 1idsr 10520 ltasr 10522 recexsrlem 10525 mulgt0sr 10527 ltpsrpr 10531 map2psrpr 10532 |
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