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Theorem naddcnff 43352
Description: Addition operator for Cantor normal forms is a function into Cantor normal forms. (Contributed by RP, 2-Jan-2025.)
Assertion
Ref Expression
naddcnff ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ( ∘f +o ↾ (𝑆 × 𝑆)):(𝑆 × 𝑆)⟶𝑆)

Proof of Theorem naddcnff
Dummy variables 𝑓 𝑔 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simpr 484 . . . . . 6 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → 𝑆 = dom (ω CNF 𝑋))
21eleq2d 2825 . . . . 5 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑓𝑆𝑓 ∈ dom (ω CNF 𝑋)))
3 eqid 2735 . . . . . 6 dom (ω CNF 𝑋) = dom (ω CNF 𝑋)
4 omelon 9684 . . . . . . 7 ω ∈ On
54a1i 11 . . . . . 6 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ω ∈ On)
6 simpl 482 . . . . . 6 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → 𝑋 ∈ On)
73, 5, 6cantnfs 9704 . . . . 5 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑓 ∈ dom (ω CNF 𝑋) ↔ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)))
82, 7bitrd 279 . . . 4 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑓𝑆 ↔ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)))
91eleq2d 2825 . . . . . . . . 9 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑔𝑆𝑔 ∈ dom (ω CNF 𝑋)))
103, 5, 6cantnfs 9704 . . . . . . . . 9 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑔 ∈ dom (ω CNF 𝑋) ↔ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)))
119, 10bitrd 279 . . . . . . . 8 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑔𝑆 ↔ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)))
1211adantr 480 . . . . . . 7 (((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) → (𝑔𝑆 ↔ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)))
13 simpl 482 . . . . . . . . . . . . . 14 ((𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅) → 𝑓:𝑋⟶ω)
14 simpl 482 . . . . . . . . . . . . . 14 ((𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅) → 𝑔:𝑋⟶ω)
1513, 14anim12i 613 . . . . . . . . . . . . 13 (((𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω))
166, 15anim12i 613 . . . . . . . . . . . 12 (((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ ((𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅))) → (𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)))
1716anassrs 467 . . . . . . . . . . 11 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → (𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)))
18 simprl 771 . . . . . . . . . . . . . . 15 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → 𝑓:𝑋⟶ω)
1918ffnd 6738 . . . . . . . . . . . . . 14 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → 𝑓 Fn 𝑋)
20 simprr 773 . . . . . . . . . . . . . . 15 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → 𝑔:𝑋⟶ω)
2120ffnd 6738 . . . . . . . . . . . . . 14 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → 𝑔 Fn 𝑋)
22 simpl 482 . . . . . . . . . . . . . 14 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → 𝑋 ∈ On)
23 inidm 4235 . . . . . . . . . . . . . 14 (𝑋𝑋) = 𝑋
2419, 21, 22, 22, 23offn 7710 . . . . . . . . . . . . 13 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → (𝑓f +o 𝑔) Fn 𝑋)
25 simpr 484 . . . . . . . . . . . . . . 15 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ (𝑓f +o 𝑔) Fn 𝑋) → (𝑓f +o 𝑔) Fn 𝑋)
26 simplrl 777 . . . . . . . . . . . . . . . . . . . . 21 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑓:𝑋⟶ω)
2726ffnd 6738 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑓 Fn 𝑋)
28 simplrr 778 . . . . . . . . . . . . . . . . . . . . 21 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑔:𝑋⟶ω)
2928ffnd 6738 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑔 Fn 𝑋)
30 simpll 767 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑋 ∈ On)
31 simpr 484 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → 𝑥𝑋)
32 fnfvof 7714 . . . . . . . . . . . . . . . . . . . 20 (((𝑓 Fn 𝑋𝑔 Fn 𝑋) ∧ (𝑋 ∈ On ∧ 𝑥𝑋)) → ((𝑓f +o 𝑔)‘𝑥) = ((𝑓𝑥) +o (𝑔𝑥)))
3327, 29, 30, 31, 32syl22anc 839 . . . . . . . . . . . . . . . . . . 19 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → ((𝑓f +o 𝑔)‘𝑥) = ((𝑓𝑥) +o (𝑔𝑥)))
3418ffvelcdmda 7104 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → (𝑓𝑥) ∈ ω)
3520ffvelcdmda 7104 . . . . . . . . . . . . . . . . . . . 20 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → (𝑔𝑥) ∈ ω)
36 nnacl 8648 . . . . . . . . . . . . . . . . . . . 20 (((𝑓𝑥) ∈ ω ∧ (𝑔𝑥) ∈ ω) → ((𝑓𝑥) +o (𝑔𝑥)) ∈ ω)
3734, 35, 36syl2anc 584 . . . . . . . . . . . . . . . . . . 19 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → ((𝑓𝑥) +o (𝑔𝑥)) ∈ ω)
3833, 37eqeltrd 2839 . . . . . . . . . . . . . . . . . 18 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ 𝑥𝑋) → ((𝑓f +o 𝑔)‘𝑥) ∈ ω)
3938ex 412 . . . . . . . . . . . . . . . . 17 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → (𝑥𝑋 → ((𝑓f +o 𝑔)‘𝑥) ∈ ω))
4039ralrimiv 3143 . . . . . . . . . . . . . . . 16 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → ∀𝑥𝑋 ((𝑓f +o 𝑔)‘𝑥) ∈ ω)
4140adantr 480 . . . . . . . . . . . . . . 15 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ (𝑓f +o 𝑔) Fn 𝑋) → ∀𝑥𝑋 ((𝑓f +o 𝑔)‘𝑥) ∈ ω)
42 fnfvrnss 7141 . . . . . . . . . . . . . . 15 (((𝑓f +o 𝑔) Fn 𝑋 ∧ ∀𝑥𝑋 ((𝑓f +o 𝑔)‘𝑥) ∈ ω) → ran (𝑓f +o 𝑔) ⊆ ω)
4325, 41, 42syl2anc 584 . . . . . . . . . . . . . 14 (((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) ∧ (𝑓f +o 𝑔) Fn 𝑋) → ran (𝑓f +o 𝑔) ⊆ ω)
4443ex 412 . . . . . . . . . . . . 13 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → ((𝑓f +o 𝑔) Fn 𝑋 → ran (𝑓f +o 𝑔) ⊆ ω))
4524, 44jcai 516 . . . . . . . . . . . 12 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → ((𝑓f +o 𝑔) Fn 𝑋 ∧ ran (𝑓f +o 𝑔) ⊆ ω))
46 df-f 6567 . . . . . . . . . . . 12 ((𝑓f +o 𝑔):𝑋⟶ω ↔ ((𝑓f +o 𝑔) Fn 𝑋 ∧ ran (𝑓f +o 𝑔) ⊆ ω))
4745, 46sylibr 234 . . . . . . . . . . 11 ((𝑋 ∈ On ∧ (𝑓:𝑋⟶ω ∧ 𝑔:𝑋⟶ω)) → (𝑓f +o 𝑔):𝑋⟶ω)
4817, 47syl 17 . . . . . . . . . 10 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → (𝑓f +o 𝑔):𝑋⟶ω)
49 ffun 6740 . . . . . . . . . . . . 13 ((𝑓f +o 𝑔):𝑋⟶ω → Fun (𝑓f +o 𝑔))
5049adantl 481 . . . . . . . . . . . 12 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → Fun (𝑓f +o 𝑔))
51 simplrr 778 . . . . . . . . . . . . . . 15 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → 𝑓 finSupp ∅)
5251adantr 480 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → 𝑓 finSupp ∅)
53 simplrr 778 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → 𝑔 finSupp ∅)
5452, 53fsuppunfi 9426 . . . . . . . . . . . . 13 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → ((𝑓 supp ∅) ∪ (𝑔 supp ∅)) ∈ Fin)
55 simp-4l 783 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → 𝑋 ∈ On)
56 peano1 7911 . . . . . . . . . . . . . . 15 ∅ ∈ ω
5756a1i 11 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → ∅ ∈ ω)
58 simplrl 777 . . . . . . . . . . . . . . 15 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → 𝑓:𝑋⟶ω)
5958adantr 480 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → 𝑓:𝑋⟶ω)
60 simplrl 777 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → 𝑔:𝑋⟶ω)
61 0elon 6440 . . . . . . . . . . . . . . 15 ∅ ∈ On
62 oa0 8553 . . . . . . . . . . . . . . 15 (∅ ∈ On → (∅ +o ∅) = ∅)
6361, 62mp1i 13 . . . . . . . . . . . . . 14 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → (∅ +o ∅) = ∅)
6455, 57, 59, 60, 63suppofssd 8227 . . . . . . . . . . . . 13 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → ((𝑓f +o 𝑔) supp ∅) ⊆ ((𝑓 supp ∅) ∪ (𝑔 supp ∅)))
6554, 64ssfid 9299 . . . . . . . . . . . 12 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → ((𝑓f +o 𝑔) supp ∅) ∈ Fin)
66 ovexd 7466 . . . . . . . . . . . . 13 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → (𝑓f +o 𝑔) ∈ V)
67 isfsupp 9403 . . . . . . . . . . . . 13 (((𝑓f +o 𝑔) ∈ V ∧ ∅ ∈ On) → ((𝑓f +o 𝑔) finSupp ∅ ↔ (Fun (𝑓f +o 𝑔) ∧ ((𝑓f +o 𝑔) supp ∅) ∈ Fin)))
6866, 61, 67sylancl 586 . . . . . . . . . . . 12 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → ((𝑓f +o 𝑔) finSupp ∅ ↔ (Fun (𝑓f +o 𝑔) ∧ ((𝑓f +o 𝑔) supp ∅) ∈ Fin)))
6950, 65, 68mpbir2and 713 . . . . . . . . . . 11 (((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) ∧ (𝑓f +o 𝑔):𝑋⟶ω) → (𝑓f +o 𝑔) finSupp ∅)
7069ex 412 . . . . . . . . . 10 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → ((𝑓f +o 𝑔):𝑋⟶ω → (𝑓f +o 𝑔) finSupp ∅))
7148, 70jcai 516 . . . . . . . . 9 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → ((𝑓f +o 𝑔):𝑋⟶ω ∧ (𝑓f +o 𝑔) finSupp ∅))
721eleq2d 2825 . . . . . . . . . . 11 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ((𝑓f +o 𝑔) ∈ 𝑆 ↔ (𝑓f +o 𝑔) ∈ dom (ω CNF 𝑋)))
733, 5, 6cantnfs 9704 . . . . . . . . . . 11 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ((𝑓f +o 𝑔) ∈ dom (ω CNF 𝑋) ↔ ((𝑓f +o 𝑔):𝑋⟶ω ∧ (𝑓f +o 𝑔) finSupp ∅)))
7472, 73bitrd 279 . . . . . . . . . 10 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ((𝑓f +o 𝑔) ∈ 𝑆 ↔ ((𝑓f +o 𝑔):𝑋⟶ω ∧ (𝑓f +o 𝑔) finSupp ∅)))
7574ad2antrr 726 . . . . . . . . 9 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → ((𝑓f +o 𝑔) ∈ 𝑆 ↔ ((𝑓f +o 𝑔):𝑋⟶ω ∧ (𝑓f +o 𝑔) finSupp ∅)))
7671, 75mpbird 257 . . . . . . . 8 ((((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) ∧ (𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅)) → (𝑓f +o 𝑔) ∈ 𝑆)
7776ex 412 . . . . . . 7 (((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) → ((𝑔:𝑋⟶ω ∧ 𝑔 finSupp ∅) → (𝑓f +o 𝑔) ∈ 𝑆))
7812, 77sylbid 240 . . . . . 6 (((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) → (𝑔𝑆 → (𝑓f +o 𝑔) ∈ 𝑆))
7978ralrimiv 3143 . . . . 5 (((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) ∧ (𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅)) → ∀𝑔𝑆 (𝑓f +o 𝑔) ∈ 𝑆)
8079ex 412 . . . 4 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ((𝑓:𝑋⟶ω ∧ 𝑓 finSupp ∅) → ∀𝑔𝑆 (𝑓f +o 𝑔) ∈ 𝑆))
818, 80sylbid 240 . . 3 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → (𝑓𝑆 → ∀𝑔𝑆 (𝑓f +o 𝑔) ∈ 𝑆))
8281ralrimiv 3143 . 2 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ∀𝑓𝑆𝑔𝑆 (𝑓f +o 𝑔) ∈ 𝑆)
83 ofmres 8008 . . 3 ( ∘f +o ↾ (𝑆 × 𝑆)) = (𝑓𝑆, 𝑔𝑆 ↦ (𝑓f +o 𝑔))
8483fmpo 8092 . 2 (∀𝑓𝑆𝑔𝑆 (𝑓f +o 𝑔) ∈ 𝑆 ↔ ( ∘f +o ↾ (𝑆 × 𝑆)):(𝑆 × 𝑆)⟶𝑆)
8582, 84sylib 218 1 ((𝑋 ∈ On ∧ 𝑆 = dom (ω CNF 𝑋)) → ( ∘f +o ↾ (𝑆 × 𝑆)):(𝑆 × 𝑆)⟶𝑆)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1537  wcel 2106  wral 3059  Vcvv 3478  cun 3961  wss 3963  c0 4339   class class class wbr 5148   × cxp 5687  dom cdm 5689  ran crn 5690  cres 5691  Oncon0 6386  Fun wfun 6557   Fn wfn 6558  wf 6559  cfv 6563  (class class class)co 7431  f cof 7695  ωcom 7887   supp csupp 8184   +o coa 8502  Fincfn 8984   finSupp cfsupp 9399   CNF ccnf 9699
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-rep 5285  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438  ax-un 7754  ax-inf2 9679
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-csb 3909  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-pss 3983  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-iun 4998  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5583  df-eprel 5589  df-po 5597  df-so 5598  df-fr 5641  df-we 5643  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-pred 6323  df-ord 6389  df-on 6390  df-lim 6391  df-suc 6392  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-f1 6568  df-fo 6569  df-f1o 6570  df-fv 6571  df-ov 7434  df-oprab 7435  df-mpo 7436  df-of 7697  df-om 7888  df-1st 8013  df-2nd 8014  df-supp 8185  df-frecs 8305  df-wrecs 8336  df-recs 8410  df-rdg 8449  df-seqom 8487  df-1o 8505  df-oadd 8509  df-map 8867  df-en 8985  df-fin 8988  df-fsupp 9400  df-cnf 9700
This theorem is referenced by:  naddcnffn  43353  naddcnffo  43354  naddcnfcl  43355
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