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| Mirrors > Home > MPE Home > Th. List > nadd4 | Structured version Visualization version GIF version | ||
| Description: Rearragement of terms in a quadruple sum. (Contributed by Scott Fenton, 5-Feb-2025.) |
| Ref | Expression |
|---|---|
| nadd4 | ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → ((𝐴 +no 𝐵) +no (𝐶 +no 𝐷)) = ((𝐴 +no 𝐶) +no (𝐵 +no 𝐷))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nadd32 8661 | . . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐴 +no 𝐵) +no 𝐶) = ((𝐴 +no 𝐶) +no 𝐵)) | |
| 2 | 1 | 3expa 1118 | . . . 4 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ 𝐶 ∈ On) → ((𝐴 +no 𝐵) +no 𝐶) = ((𝐴 +no 𝐶) +no 𝐵)) |
| 3 | 2 | adantrr 717 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → ((𝐴 +no 𝐵) +no 𝐶) = ((𝐴 +no 𝐶) +no 𝐵)) |
| 4 | 3 | oveq1d 7402 | . 2 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → (((𝐴 +no 𝐵) +no 𝐶) +no 𝐷) = (((𝐴 +no 𝐶) +no 𝐵) +no 𝐷)) |
| 5 | naddcl 8641 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 +no 𝐵) ∈ On) | |
| 6 | 5 | adantr 480 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → (𝐴 +no 𝐵) ∈ On) |
| 7 | simprl 770 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → 𝐶 ∈ On) | |
| 8 | simprr 772 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → 𝐷 ∈ On) | |
| 9 | naddass 8660 | . . 3 ⊢ (((𝐴 +no 𝐵) ∈ On ∧ 𝐶 ∈ On ∧ 𝐷 ∈ On) → (((𝐴 +no 𝐵) +no 𝐶) +no 𝐷) = ((𝐴 +no 𝐵) +no (𝐶 +no 𝐷))) | |
| 10 | 6, 7, 8, 9 | syl3anc 1373 | . 2 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → (((𝐴 +no 𝐵) +no 𝐶) +no 𝐷) = ((𝐴 +no 𝐵) +no (𝐶 +no 𝐷))) |
| 11 | naddcl 8641 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐶 ∈ On) → (𝐴 +no 𝐶) ∈ On) | |
| 12 | 11 | ad2ant2r 747 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → (𝐴 +no 𝐶) ∈ On) |
| 13 | simplr 768 | . . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → 𝐵 ∈ On) | |
| 14 | naddass 8660 | . . 3 ⊢ (((𝐴 +no 𝐶) ∈ On ∧ 𝐵 ∈ On ∧ 𝐷 ∈ On) → (((𝐴 +no 𝐶) +no 𝐵) +no 𝐷) = ((𝐴 +no 𝐶) +no (𝐵 +no 𝐷))) | |
| 15 | 12, 13, 8, 14 | syl3anc 1373 | . 2 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → (((𝐴 +no 𝐶) +no 𝐵) +no 𝐷) = ((𝐴 +no 𝐶) +no (𝐵 +no 𝐷))) |
| 16 | 4, 10, 15 | 3eqtr3d 2772 | 1 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On)) → ((𝐴 +no 𝐵) +no (𝐶 +no 𝐷)) = ((𝐴 +no 𝐶) +no (𝐵 +no 𝐷))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 Oncon0 6332 (class class class)co 7387 +no cnadd 8629 |
| 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 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 |
| 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 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-ot 4598 df-uni 4872 df-int 4911 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-se 5592 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-oprab 7391 df-mpo 7392 df-1st 7968 df-2nd 7969 df-frecs 8260 df-nadd 8630 |
| This theorem is referenced by: nadd42 8663 |
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