| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > addcomnq | Structured version Visualization version GIF version | ||
| Description: Addition of positive fractions is commutative. (Contributed by NM, 30-Aug-1995.) (Revised by Mario Carneiro, 28-Apr-2013.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| addcomnq | ⊢ (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addcompq 10919 | . . . 4 ⊢ (𝐴 +pQ 𝐵) = (𝐵 +pQ 𝐴) | |
| 2 | 1 | fveq2i 6870 | . . 3 ⊢ ([Q]‘(𝐴 +pQ 𝐵)) = ([Q]‘(𝐵 +pQ 𝐴)) |
| 3 | addpqnq 10907 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = ([Q]‘(𝐴 +pQ 𝐵))) | |
| 4 | addpqnq 10907 | . . . 4 ⊢ ((𝐵 ∈ Q ∧ 𝐴 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) | |
| 5 | 4 | ancoms 462 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) |
| 6 | 2, 3, 5 | 3eqtr4a 2824 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴)) |
| 7 | addnqf 10917 | . . . 4 ⊢ +Q :(Q × Q)⟶Q | |
| 8 | 7 | fdmi 6703 | . . 3 ⊢ dom +Q = (Q × Q) |
| 9 | 8 | ndmovcom 7583 | . 2 ⊢ (¬ (𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴)) |
| 10 | 6, 9 | pm2.61i 183 | 1 ⊢ (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 399 = wceq 1561 ∈ wcel 2143 × cxp 5646 ‘cfv 6521 (class class class)co 7396 +pQ cplpq 10817 Qcnq 10821 [Q]cerq 10823 +Q cplq 10824 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pr 5391 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-oadd 8441 df-omul 8442 df-er 8678 df-ni 10841 df-pli 10842 df-mi 10843 df-lti 10844 df-plpq 10877 df-enq 10880 df-nq 10881 df-erq 10882 df-plq 10883 df-1nq 10885 |
| This theorem is referenced by: ltaddnq 10943 addclprlem2 10986 addclpr 10987 addcompr 10990 distrlem4pr 10995 prlem934 11002 ltexprlem2 11006 ltexprlem6 11010 ltexprlem7 11011 prlem936 11016 |
| Copyright terms: Public domain | W3C validator |