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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 27880 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 +s 𝐵) = (𝐵 +s 𝐴)) | |
| 4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (𝐴 +s 𝐵) = (𝐵 +s 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 (class class class)co 7390 No csur 27558 +s cadds 27873 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-tp 4597 df-op 4599 df-uni 4875 df-int 4914 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-se 5595 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-1o 8437 df-2o 8438 df-no 27561 df-slt 27562 df-bday 27563 df-sslt 27700 df-scut 27702 df-made 27762 df-old 27763 df-left 27765 df-right 27766 df-norec2 27863 df-adds 27874 |
| This theorem is referenced by: addslid 27882 addsproplem2 27884 addsproplem4 27886 addsproplem5 27887 addsproplem6 27888 adds32d 27921 adds12d 27922 adds42d 27924 addsbday 27931 negnegs 27957 npcans 27986 negsubsdi2d 27991 sltsubsubbd 27994 sltsubadd2d 28001 sltaddsub2d 28003 mulsproplem12 28037 mulscom 28049 addsdilem3 28063 addsdilem4 28064 mulsasslem3 28075 mulsunif2lem 28079 elzn0s 28293 zscut 28302 halfcut 28340 |
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