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Mirrors > Home > MPE Home > Th. List > adds4d | Structured version Visualization version GIF version |
Description: Rearrangement of four terms in a surreal sum. (Contributed by Scott Fenton, 5-Feb-2025.) |
Ref | Expression |
---|---|
adds4d.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
adds4d.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
adds4d.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
adds4d.4 | ⊢ (𝜑 → 𝐷 ∈ No ) |
Ref | Expression |
---|---|
adds4d | ⊢ (𝜑 → ((𝐴 +s 𝐵) +s (𝐶 +s 𝐷)) = ((𝐴 +s 𝐶) +s (𝐵 +s 𝐷))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | adds4d.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ No ) | |
2 | adds4d.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
3 | adds4d.3 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ No ) | |
4 | 1, 2, 3 | adds32d 27875 | . . 3 ⊢ (𝜑 → ((𝐴 +s 𝐵) +s 𝐶) = ((𝐴 +s 𝐶) +s 𝐵)) |
5 | 4 | oveq1d 7419 | . 2 ⊢ (𝜑 → (((𝐴 +s 𝐵) +s 𝐶) +s 𝐷) = (((𝐴 +s 𝐶) +s 𝐵) +s 𝐷)) |
6 | 1, 2 | addscld 27848 | . . 3 ⊢ (𝜑 → (𝐴 +s 𝐵) ∈ No ) |
7 | adds4d.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ No ) | |
8 | 6, 3, 7 | addsassd 27874 | . 2 ⊢ (𝜑 → (((𝐴 +s 𝐵) +s 𝐶) +s 𝐷) = ((𝐴 +s 𝐵) +s (𝐶 +s 𝐷))) |
9 | 1, 3 | addscld 27848 | . . 3 ⊢ (𝜑 → (𝐴 +s 𝐶) ∈ No ) |
10 | 9, 2, 7 | addsassd 27874 | . 2 ⊢ (𝜑 → (((𝐴 +s 𝐶) +s 𝐵) +s 𝐷) = ((𝐴 +s 𝐶) +s (𝐵 +s 𝐷))) |
11 | 5, 8, 10 | 3eqtr3d 2774 | 1 ⊢ (𝜑 → ((𝐴 +s 𝐵) +s (𝐶 +s 𝐷)) = ((𝐴 +s 𝐶) +s (𝐵 +s 𝐷))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2098 (class class class)co 7404 No csur 27524 +s cadds 27827 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-tp 4628 df-op 4630 df-ot 4632 df-uni 4903 df-int 4944 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-se 5625 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-1st 7971 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-1o 8464 df-2o 8465 df-nadd 8664 df-no 27527 df-slt 27528 df-bday 27529 df-sle 27629 df-sslt 27665 df-scut 27667 df-0s 27708 df-made 27725 df-old 27726 df-left 27728 df-right 27729 df-norec2 27817 df-adds 27828 |
This theorem is referenced by: adds42d 27878 negsdi 27913 |
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