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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 10894 | . . . 4 ⊢ (𝐴 +pQ 𝐵) = (𝐵 +pQ 𝐴) | |
| 2 | 1 | fveq2i 6855 | . . 3 ⊢ ([Q]‘(𝐴 +pQ 𝐵)) = ([Q]‘(𝐵 +pQ 𝐴)) |
| 3 | addpqnq 10882 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = ([Q]‘(𝐴 +pQ 𝐵))) | |
| 4 | addpqnq 10882 | . . . 4 ⊢ ((𝐵 ∈ Q ∧ 𝐴 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) | |
| 5 | 4 | ancoms 461 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐵 +Q 𝐴) = ([Q]‘(𝐵 +pQ 𝐴))) |
| 6 | 2, 3, 5 | 3eqtr4a 2813 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 +Q 𝐵) = (𝐵 +Q 𝐴)) |
| 7 | addnqf 10892 | . . . 4 ⊢ +Q :(Q × Q)⟶Q | |
| 8 | 7 | fdmi 6688 | . . 3 ⊢ dom +Q = (Q × Q) |
| 9 | 8 | ndmovcom 7568 | . 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 398 = wceq 1550 ∈ wcel 2132 × cxp 5634 ‘cfv 6506 (class class class)co 7381 +pQ cplpq 10792 Qcnq 10796 [Q]cerq 10798 +Q cplq 10799 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-sep 5236 ax-nul 5246 ax-pr 5380 ax-un 7703 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-ral 3067 df-rex 3077 df-rmo 3357 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-pss 3915 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4856 df-iun 4941 df-br 5091 df-opab 5153 df-mpt 5172 df-tr 5198 df-id 5531 df-eprel 5536 df-po 5544 df-so 5545 df-fr 5589 df-we 5591 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-pred 6273 df-ord 6334 df-on 6335 df-lim 6336 df-suc 6337 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-ov 7384 df-oprab 7385 df-mpo 7386 df-om 7832 df-1st 7955 df-2nd 7956 df-frecs 8246 df-wrecs 8277 df-recs 8326 df-rdg 8365 df-1o 8421 df-oadd 8425 df-omul 8426 df-er 8662 df-ni 10816 df-pli 10817 df-mi 10818 df-lti 10819 df-plpq 10852 df-enq 10855 df-nq 10856 df-erq 10857 df-plq 10858 df-1nq 10860 |
| This theorem is referenced by: ltaddnq 10918 addclprlem2 10961 addclpr 10962 addcompr 10965 distrlem4pr 10970 prlem934 10977 ltexprlem2 10981 ltexprlem6 10985 ltexprlem7 10986 prlem936 10991 |
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