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Mirrors > Home > MPE Home > Th. List > muls12d | Structured version Visualization version GIF version |
Description: Commutative/associative law for surreal multiplication. (Contributed by Scott Fenton, 14-Mar-2025.) |
Ref | Expression |
---|---|
muls12d.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
muls12d.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
muls12d.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
Ref | Expression |
---|---|
muls12d | ⊢ (𝜑 → (𝐴 ·s (𝐵 ·s 𝐶)) = (𝐵 ·s (𝐴 ·s 𝐶))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | muls12d.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ No ) | |
2 | muls12d.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
3 | 1, 2 | mulscomd 28039 | . . 3 ⊢ (𝜑 → (𝐴 ·s 𝐵) = (𝐵 ·s 𝐴)) |
4 | 3 | oveq1d 7435 | . 2 ⊢ (𝜑 → ((𝐴 ·s 𝐵) ·s 𝐶) = ((𝐵 ·s 𝐴) ·s 𝐶)) |
5 | muls12d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ No ) | |
6 | 1, 2, 5 | mulsassd 28066 | . 2 ⊢ (𝜑 → ((𝐴 ·s 𝐵) ·s 𝐶) = (𝐴 ·s (𝐵 ·s 𝐶))) |
7 | 2, 1, 5 | mulsassd 28066 | . 2 ⊢ (𝜑 → ((𝐵 ·s 𝐴) ·s 𝐶) = (𝐵 ·s (𝐴 ·s 𝐶))) |
8 | 4, 6, 7 | 3eqtr3d 2776 | 1 ⊢ (𝜑 → (𝐴 ·s (𝐵 ·s 𝐶)) = (𝐵 ·s (𝐴 ·s 𝐶))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1534 ∈ wcel 2099 (class class class)co 7420 No csur 27572 ·s cmuls 28005 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-ot 4638 df-uni 4909 df-int 4950 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-se 5634 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-1st 7993 df-2nd 7994 df-frecs 8286 df-wrecs 8317 df-recs 8391 df-1o 8486 df-2o 8487 df-nadd 8686 df-no 27575 df-slt 27576 df-bday 27577 df-sle 27677 df-sslt 27713 df-scut 27715 df-0s 27756 df-made 27773 df-old 27774 df-left 27776 df-right 27777 df-norec 27854 df-norec2 27865 df-adds 27876 df-negs 27933 df-subs 27934 df-muls 28006 |
This theorem is referenced by: divsasswd 28101 precsexlem9 28112 |
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