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| 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 11006 | . . . 4 ⊢ (𝐴 +pQ 𝐵) = (𝐵 +pQ 𝐴) | |
| 2 | 1 | fveq2i 6876 | . . 3 ⊢ ([Q]‘(𝐴 +pQ 𝐵)) = ([Q]‘(𝐵 +pQ 𝐴)) |
| 3 | addpqnq 10994 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = ([Q]‘(𝐴 +pQ 𝐵))) | |
| 4 | addpqnq 10994 | . . . 4 ⊢ ((𝐵 ∈ Q ∧ 𝐴 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) | |
| 5 | 4 | ancoms 464 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) |
| 6 | 2, 3, 5 | 3eqtr4a 2821 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴)) |
| 7 | addnqf 11004 | . . . 4 ⊢ +Q :(Q × Q)⟶Q | |
| 8 | 7 | fdmi 6709 | . . 3 ⊢ dom +Q = (Q × Q) |
| 9 | 8 | ndmovcom 7596 | . 2 ⊢ (¬ (𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴)) |
| 10 | 6, 9 | pm2.61i 184 | 1 ⊢ (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 = wceq 1570 ∈ wcel 2145 × cxp 5645 ‘cfv 6527 (class class class)co 7408 +pQ cplpq 10904 Qcnq 10908 [Q]cerq 10910 +Q cplq 10911 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-lim 6356 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8454 df-oadd 8458 df-omul 8459 df-er 8695 df-ni 10928 df-pli 10929 df-mi 10930 df-lti 10931 df-plpq 10964 df-enq 10967 df-nq 10968 df-erq 10969 df-plq 10970 df-1nq 10972 |
| This theorem is used by: ltaddnq 11030 addclprlem2 11073 addclpr 11074 addcompr 11077 distrlem4pr 11082 prlem934 11089 ltexprlem2 11093 ltexprlem6 11097 ltexprlem7 11098 prlem936 11103 |
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