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Theorem ofoaass 43639
Description: Component-wise addition of ordinal-yielding functions is associative. (Contributed by RP, 5-Jan-2025.)
Assertion
Ref Expression
ofoaass (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → ((𝐹f +o 𝐺) ∘f +o 𝐻) = (𝐹f +o (𝐺f +o 𝐻)))

Proof of Theorem ofoaass
Dummy variable 𝑎 is distinct from all other variables.
StepHypRef Expression
1 elmapfn 8804 . . . . . 6 (𝐹 ∈ (𝐵m 𝐴) → 𝐹 Fn 𝐴)
213ad2ant1 1134 . . . . 5 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐹 Fn 𝐴)
32adantl 481 . . . 4 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐹 Fn 𝐴)
4 elmapfn 8804 . . . . . 6 (𝐺 ∈ (𝐵m 𝐴) → 𝐺 Fn 𝐴)
543ad2ant2 1135 . . . . 5 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐺 Fn 𝐴)
65adantl 481 . . . 4 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐺 Fn 𝐴)
7 simpll 767 . . . 4 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐴𝑉)
8 inidm 4178 . . . 4 (𝐴𝐴) = 𝐴
93, 6, 7, 7, 8offn 7635 . . 3 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → (𝐹f +o 𝐺) Fn 𝐴)
10 elmapfn 8804 . . . . 5 (𝐻 ∈ (𝐵m 𝐴) → 𝐻 Fn 𝐴)
11103ad2ant3 1136 . . . 4 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐻 Fn 𝐴)
1211adantl 481 . . 3 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐻 Fn 𝐴)
139, 12, 7, 7, 8offn 7635 . 2 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → ((𝐹f +o 𝐺) ∘f +o 𝐻) Fn 𝐴)
146, 12, 7, 7, 8offn 7635 . . 3 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → (𝐺f +o 𝐻) Fn 𝐴)
153, 14, 7, 7, 8offn 7635 . 2 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → (𝐹f +o (𝐺f +o 𝐻)) Fn 𝐴)
16 simpllr 776 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → 𝐵 ∈ On)
17 elmapi 8788 . . . . . . . . 9 (𝐹 ∈ (𝐵m 𝐴) → 𝐹:𝐴𝐵)
18173ad2ant1 1134 . . . . . . . 8 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐹:𝐴𝐵)
1918adantl 481 . . . . . . 7 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐹:𝐴𝐵)
2019ffvelcdmda 7029 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐹𝑎) ∈ 𝐵)
21 onelon 6341 . . . . . 6 ((𝐵 ∈ On ∧ (𝐹𝑎) ∈ 𝐵) → (𝐹𝑎) ∈ On)
2216, 20, 21syl2anc 585 . . . . 5 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐹𝑎) ∈ On)
23 elmapi 8788 . . . . . . . . 9 (𝐺 ∈ (𝐵m 𝐴) → 𝐺:𝐴𝐵)
24233ad2ant2 1135 . . . . . . . 8 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐺:𝐴𝐵)
2524adantl 481 . . . . . . 7 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐺:𝐴𝐵)
2625ffvelcdmda 7029 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐺𝑎) ∈ 𝐵)
27 onelon 6341 . . . . . 6 ((𝐵 ∈ On ∧ (𝐺𝑎) ∈ 𝐵) → (𝐺𝑎) ∈ On)
2816, 26, 27syl2anc 585 . . . . 5 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐺𝑎) ∈ On)
29 elmapi 8788 . . . . . . . . 9 (𝐻 ∈ (𝐵m 𝐴) → 𝐻:𝐴𝐵)
30293ad2ant3 1136 . . . . . . . 8 ((𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴)) → 𝐻:𝐴𝐵)
3130adantl 481 . . . . . . 7 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → 𝐻:𝐴𝐵)
3231ffvelcdmda 7029 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐻𝑎) ∈ 𝐵)
33 onelon 6341 . . . . . 6 ((𝐵 ∈ On ∧ (𝐻𝑎) ∈ 𝐵) → (𝐻𝑎) ∈ On)
3416, 32, 33syl2anc 585 . . . . 5 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐻𝑎) ∈ On)
35 oaass 8488 . . . . 5 (((𝐹𝑎) ∈ On ∧ (𝐺𝑎) ∈ On ∧ (𝐻𝑎) ∈ On) → (((𝐹𝑎) +o (𝐺𝑎)) +o (𝐻𝑎)) = ((𝐹𝑎) +o ((𝐺𝑎) +o (𝐻𝑎))))
3622, 28, 34, 35syl3anc 1374 . . . 4 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (((𝐹𝑎) +o (𝐺𝑎)) +o (𝐻𝑎)) = ((𝐹𝑎) +o ((𝐺𝑎) +o (𝐻𝑎))))
373adantr 480 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → 𝐹 Fn 𝐴)
386adantr 480 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → 𝐺 Fn 𝐴)
397anim1i 616 . . . . . 6 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (𝐴𝑉𝑎𝐴))
40 fnfvof 7639 . . . . . 6 (((𝐹 Fn 𝐴𝐺 Fn 𝐴) ∧ (𝐴𝑉𝑎𝐴)) → ((𝐹f +o 𝐺)‘𝑎) = ((𝐹𝑎) +o (𝐺𝑎)))
4137, 38, 39, 40syl21anc 838 . . . . 5 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → ((𝐹f +o 𝐺)‘𝑎) = ((𝐹𝑎) +o (𝐺𝑎)))
4241oveq1d 7373 . . . 4 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (((𝐹f +o 𝐺)‘𝑎) +o (𝐻𝑎)) = (((𝐹𝑎) +o (𝐺𝑎)) +o (𝐻𝑎)))
436, 12jca 511 . . . . . 6 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → (𝐺 Fn 𝐴𝐻 Fn 𝐴))
44 fnfvof 7639 . . . . . 6 (((𝐺 Fn 𝐴𝐻 Fn 𝐴) ∧ (𝐴𝑉𝑎𝐴)) → ((𝐺f +o 𝐻)‘𝑎) = ((𝐺𝑎) +o (𝐻𝑎)))
4543, 39, 44syl2an2r 686 . . . . 5 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → ((𝐺f +o 𝐻)‘𝑎) = ((𝐺𝑎) +o (𝐻𝑎)))
4645oveq2d 7374 . . . 4 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → ((𝐹𝑎) +o ((𝐺f +o 𝐻)‘𝑎)) = ((𝐹𝑎) +o ((𝐺𝑎) +o (𝐻𝑎))))
4736, 42, 463eqtr4d 2780 . . 3 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (((𝐹f +o 𝐺)‘𝑎) +o (𝐻𝑎)) = ((𝐹𝑎) +o ((𝐺f +o 𝐻)‘𝑎)))
489, 12jca 511 . . . 4 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → ((𝐹f +o 𝐺) Fn 𝐴𝐻 Fn 𝐴))
49 fnfvof 7639 . . . 4 ((((𝐹f +o 𝐺) Fn 𝐴𝐻 Fn 𝐴) ∧ (𝐴𝑉𝑎𝐴)) → (((𝐹f +o 𝐺) ∘f +o 𝐻)‘𝑎) = (((𝐹f +o 𝐺)‘𝑎) +o (𝐻𝑎)))
5048, 39, 49syl2an2r 686 . . 3 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (((𝐹f +o 𝐺) ∘f +o 𝐻)‘𝑎) = (((𝐹f +o 𝐺)‘𝑎) +o (𝐻𝑎)))
513, 14jca 511 . . . 4 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → (𝐹 Fn 𝐴 ∧ (𝐺f +o 𝐻) Fn 𝐴))
52 fnfvof 7639 . . . 4 (((𝐹 Fn 𝐴 ∧ (𝐺f +o 𝐻) Fn 𝐴) ∧ (𝐴𝑉𝑎𝐴)) → ((𝐹f +o (𝐺f +o 𝐻))‘𝑎) = ((𝐹𝑎) +o ((𝐺f +o 𝐻)‘𝑎)))
5351, 39, 52syl2an2r 686 . . 3 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → ((𝐹f +o (𝐺f +o 𝐻))‘𝑎) = ((𝐹𝑎) +o ((𝐺f +o 𝐻)‘𝑎)))
5447, 50, 533eqtr4d 2780 . 2 ((((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) ∧ 𝑎𝐴) → (((𝐹f +o 𝐺) ∘f +o 𝐻)‘𝑎) = ((𝐹f +o (𝐺f +o 𝐻))‘𝑎))
5513, 15, 54eqfnfvd 6979 1 (((𝐴𝑉𝐵 ∈ On) ∧ (𝐹 ∈ (𝐵m 𝐴) ∧ 𝐺 ∈ (𝐵m 𝐴) ∧ 𝐻 ∈ (𝐵m 𝐴))) → ((𝐹f +o 𝐺) ∘f +o 𝐻) = (𝐹f +o (𝐺f +o 𝐻)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1087   = wceq 1542  wcel 2114  Oncon0 6316   Fn wfn 6486  wf 6487  cfv 6491  (class class class)co 7358  f cof 7620   +o coa 8394  m cmap 8765
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 2183  ax-ext 2707  ax-rep 5223  ax-sep 5240  ax-nul 5250  ax-pow 5309  ax-pr 5376  ax-un 7680
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 2538  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2810  df-nfc 2884  df-ne 2932  df-ral 3051  df-rex 3060  df-rmo 3349  df-reu 3350  df-rab 3399  df-v 3441  df-sbc 3740  df-csb 3849  df-dif 3903  df-un 3905  df-in 3907  df-ss 3917  df-pss 3920  df-nul 4285  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4863  df-int 4902  df-iun 4947  df-br 5098  df-opab 5160  df-mpt 5179  df-tr 5205  df-id 5518  df-eprel 5523  df-po 5531  df-so 5532  df-fr 5576  df-we 5578  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-pred 6258  df-ord 6319  df-on 6320  df-lim 6321  df-suc 6322  df-iota 6447  df-fun 6493  df-fn 6494  df-f 6495  df-f1 6496  df-fo 6497  df-f1o 6498  df-fv 6499  df-ov 7361  df-oprab 7362  df-mpo 7363  df-of 7622  df-om 7809  df-1st 7933  df-2nd 7934  df-frecs 8223  df-wrecs 8254  df-recs 8303  df-rdg 8341  df-oadd 8401  df-map 8767
This theorem is referenced by: (None)
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