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| Mirrors > Home > MPE Home > Th. List > addscomd | Structured version Visualization version GIF version | ||
| Description: Surreal addition commutes. Part of Theorem 3 of [Conway] p. 17. (Contributed by Scott Fenton, 20-Aug-2024.) |
| Ref | Expression |
|---|---|
| addscomd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| addscomd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| Ref | Expression |
|---|---|
| addscomd | ⊢ (𝜑 → (𝐴 +s 𝐵) = (𝐵 +s 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addscomd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | addscomd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 3 | addscom 27972 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 +s 𝐵) = (𝐵 +s 𝐴)) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (𝐴 +s 𝐵) = (𝐵 +s 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7360 No csur 27617 +s cadds 27965 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-se 5578 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-1st 7935 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-1o 8398 df-2o 8399 df-no 27620 df-lts 27621 df-bday 27622 df-slts 27764 df-cuts 27766 df-made 27833 df-old 27834 df-left 27836 df-right 27837 df-norec2 27955 df-adds 27966 |
| This theorem is referenced by: addslid 27974 addsproplem2 27976 addsproplem4 27978 addsproplem5 27979 addsproplem6 27980 adds32d 28013 adds12d 28014 adds42d 28016 addbday 28024 negnegs 28050 npcans 28081 negsubsdi2d 28086 ltsubsubsbd 28089 ltsubadds2d 28096 ltaddsubs2d 28098 lesubsd 28102 mulsproplem12 28133 mulscom 28145 addsdilem3 28159 addsdilem4 28160 mulsasslem3 28171 mulsunif2lem 28175 elzn0s 28404 zcuts 28413 zsoring 28415 halfcut 28464 pw2cut2 28468 bdayfinbndlem1 28473 z12addscl 28483 |
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