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Theorem axdc3lem2 10448
Description: Lemma for axdc3 10451. We have constructed a "candidate set" 𝑆, which consists of all finite sequences 𝑠 that satisfy our property of interest, namely 𝑠(𝑥 + 1) ∈ 𝐹(𝑠(𝑥)) on its domain, but with the added constraint that 𝑠(0) = 𝐶. These sets are possible "initial segments" of the infinite sequence satisfying these constraints, but we can leverage the standard ax-dc 10443 (with no initial condition) to select a sequence of ever-lengthening finite sequences, namely (𝑛):𝑚𝐴 (for some integer 𝑚). We let our "choice" function select a sequence whose domain is one more than the last one, and agrees with the previous one on its domain. Thus, the application of vanilla ax-dc 10443 yields a sequence of sequences whose domains increase without bound, and whose union is a function which has all the properties we want. In this lemma, we show that given the sequence , we can construct the sequence 𝑔 that we are after. (Contributed by Mario Carneiro, 30-Jan-2013.)
Hypotheses
Ref Expression
axdc3lem2.1 𝐴 ∈ V
axdc3lem2.2 𝑆 = {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}
axdc3lem2.3 𝐺 = (𝑥𝑆 ↦ {𝑦𝑆 ∣ (dom 𝑦 = suc dom 𝑥 ∧ (𝑦 ↾ dom 𝑥) = 𝑥)})
Assertion
Ref Expression
axdc3lem2 (∃(:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∃𝑔(𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))))
Distinct variable groups:   𝐴,𝑔,   𝐴,𝑛,𝑠   𝐶,𝑔,   𝐶,𝑛,𝑠   𝑔,𝐹,   𝑛,𝐹,𝑠   𝑘,𝐺   𝑆,𝑘,𝑠   𝑥,𝑆,𝑦   𝑔,𝑘,   ,𝑠   𝑥,,𝑦   𝑘,𝑛
Allowed substitution hints:   𝐴(𝑥,𝑦,𝑘)   𝐶(𝑥,𝑦,𝑘)   𝑆(𝑔,,𝑛)   𝐹(𝑥,𝑦,𝑘)   𝐺(𝑥,𝑦,𝑔,,𝑛,𝑠)

Proof of Theorem axdc3lem2
Dummy variables 𝑖 𝑗 𝑚 𝑢 𝑣 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 id 22 . . . . . . . . . . . . 13 (𝑚 = ∅ → 𝑚 = ∅)
2 fveq2 6891 . . . . . . . . . . . . . 14 (𝑚 = ∅ → (𝑚) = (‘∅))
32dmeqd 5905 . . . . . . . . . . . . 13 (𝑚 = ∅ → dom (𝑚) = dom (‘∅))
41, 3eleq12d 2827 . . . . . . . . . . . 12 (𝑚 = ∅ → (𝑚 ∈ dom (𝑚) ↔ ∅ ∈ dom (‘∅)))
5 eleq2 2822 . . . . . . . . . . . . 13 (𝑚 = ∅ → (𝑗𝑚𝑗 ∈ ∅))
62sseq2d 4014 . . . . . . . . . . . . 13 (𝑚 = ∅ → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (‘∅)))
75, 6imbi12d 344 . . . . . . . . . . . 12 (𝑚 = ∅ → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
84, 7anbi12d 631 . . . . . . . . . . 11 (𝑚 = ∅ → ((𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))) ↔ (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅)))))
9 id 22 . . . . . . . . . . . . 13 (𝑚 = 𝑖𝑚 = 𝑖)
10 fveq2 6891 . . . . . . . . . . . . . 14 (𝑚 = 𝑖 → (𝑚) = (𝑖))
1110dmeqd 5905 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → dom (𝑚) = dom (𝑖))
129, 11eleq12d 2827 . . . . . . . . . . . 12 (𝑚 = 𝑖 → (𝑚 ∈ dom (𝑚) ↔ 𝑖 ∈ dom (𝑖)))
13 elequ2 2121 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → (𝑗𝑚𝑗𝑖))
1410sseq2d 4014 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑖)))
1513, 14imbi12d 344 . . . . . . . . . . . 12 (𝑚 = 𝑖 → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗𝑖 → (𝑗) ⊆ (𝑖))))
1612, 15anbi12d 631 . . . . . . . . . . 11 (𝑚 = 𝑖 → ((𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))) ↔ (𝑖 ∈ dom (𝑖) ∧ (𝑗𝑖 → (𝑗) ⊆ (𝑖)))))
17 id 22 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖𝑚 = suc 𝑖)
18 fveq2 6891 . . . . . . . . . . . . . 14 (𝑚 = suc 𝑖 → (𝑚) = (‘suc 𝑖))
1918dmeqd 5905 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → dom (𝑚) = dom (‘suc 𝑖))
2017, 19eleq12d 2827 . . . . . . . . . . . 12 (𝑚 = suc 𝑖 → (𝑚 ∈ dom (𝑚) ↔ suc 𝑖 ∈ dom (‘suc 𝑖)))
21 eleq2 2822 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → (𝑗𝑚𝑗 ∈ suc 𝑖))
2218sseq2d 4014 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (‘suc 𝑖)))
2321, 22imbi12d 344 . . . . . . . . . . . 12 (𝑚 = suc 𝑖 → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖))))
2420, 23anbi12d 631 . . . . . . . . . . 11 (𝑚 = suc 𝑖 → ((𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))) ↔ (suc 𝑖 ∈ dom (‘suc 𝑖) ∧ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖)))))
25 peano1 7881 . . . . . . . . . . . . . . 15 ∅ ∈ ω
26 ffvelcdm 7083 . . . . . . . . . . . . . . 15 ((:ω⟶𝑆 ∧ ∅ ∈ ω) → (‘∅) ∈ 𝑆)
2725, 26mpan2 689 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → (‘∅) ∈ 𝑆)
28 axdc3lem2.2 . . . . . . . . . . . . . . . . . 18 𝑆 = {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}
29 fdm 6726 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑠:suc 𝑛𝐴 → dom 𝑠 = suc 𝑛)
30 nnord 7865 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑛 ∈ ω → Ord 𝑛)
31 0elsuc 7825 . . . . . . . . . . . . . . . . . . . . . . . . 25 (Ord 𝑛 → ∅ ∈ suc 𝑛)
3230, 31syl 17 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑛 ∈ ω → ∅ ∈ suc 𝑛)
33 peano2 7883 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑛 ∈ ω → suc 𝑛 ∈ ω)
34 eleq2 2822 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑠 = suc 𝑛 → (∅ ∈ dom 𝑠 ↔ ∅ ∈ suc 𝑛))
35 eleq1 2821 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑠 = suc 𝑛 → (dom 𝑠 ∈ ω ↔ suc 𝑛 ∈ ω))
3634, 35anbi12d 631 . . . . . . . . . . . . . . . . . . . . . . . . 25 (dom 𝑠 = suc 𝑛 → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ suc 𝑛 ∧ suc 𝑛 ∈ ω)))
3736biimprcd 249 . . . . . . . . . . . . . . . . . . . . . . . 24 ((∅ ∈ suc 𝑛 ∧ suc 𝑛 ∈ ω) → (dom 𝑠 = suc 𝑛 → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
3832, 33, 37syl2anc 584 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑛 ∈ ω → (dom 𝑠 = suc 𝑛 → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
3929, 38syl5com 31 . . . . . . . . . . . . . . . . . . . . . 22 (𝑠:suc 𝑛𝐴 → (𝑛 ∈ ω → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
40393ad2ant1 1133 . . . . . . . . . . . . . . . . . . . . 21 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
4140impcom 408 . . . . . . . . . . . . . . . . . . . 20 ((𝑛 ∈ ω ∧ (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))) → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω))
4241rexlimiva 3147 . . . . . . . . . . . . . . . . . . 19 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω))
4342ss2abi 4063 . . . . . . . . . . . . . . . . . 18 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}
4428, 43eqsstri 4016 . . . . . . . . . . . . . . . . 17 𝑆 ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}
4544sseli 3978 . . . . . . . . . . . . . . . 16 ((‘∅) ∈ 𝑆 → (‘∅) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
46 fvex 6904 . . . . . . . . . . . . . . . . 17 (‘∅) ∈ V
47 dmeq 5903 . . . . . . . . . . . . . . . . . . 19 (𝑠 = (‘∅) → dom 𝑠 = dom (‘∅))
4847eleq2d 2819 . . . . . . . . . . . . . . . . . 18 (𝑠 = (‘∅) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (‘∅)))
4947eleq1d 2818 . . . . . . . . . . . . . . . . . 18 (𝑠 = (‘∅) → (dom 𝑠 ∈ ω ↔ dom (‘∅) ∈ ω))
5048, 49anbi12d 631 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘∅) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω)))
5146, 50elab 3668 . . . . . . . . . . . . . . . 16 ((‘∅) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω))
5245, 51sylib 217 . . . . . . . . . . . . . . 15 ((‘∅) ∈ 𝑆 → (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω))
5352simpld 495 . . . . . . . . . . . . . 14 ((‘∅) ∈ 𝑆 → ∅ ∈ dom (‘∅))
5427, 53syl 17 . . . . . . . . . . . . 13 (:ω⟶𝑆 → ∅ ∈ dom (‘∅))
55 noel 4330 . . . . . . . . . . . . . 14 ¬ 𝑗 ∈ ∅
5655pm2.21i 119 . . . . . . . . . . . . 13 (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))
5754, 56jctir 521 . . . . . . . . . . . 12 (:ω⟶𝑆 → (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
5857adantr 481 . . . . . . . . . . 11 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
59 ffvelcdm 7083 . . . . . . . . . . . . . . 15 ((:ω⟶𝑆𝑖 ∈ ω) → (𝑖) ∈ 𝑆)
6059ancoms 459 . . . . . . . . . . . . . 14 ((𝑖 ∈ ω ∧ :ω⟶𝑆) → (𝑖) ∈ 𝑆)
6160adantrr 715 . . . . . . . . . . . . 13 ((𝑖 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑖) ∈ 𝑆)
62 suceq 6430 . . . . . . . . . . . . . . . . 17 (𝑘 = 𝑖 → suc 𝑘 = suc 𝑖)
6362fveq2d 6895 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑖 → (‘suc 𝑘) = (‘suc 𝑖))
64 2fveq3 6896 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑖 → (𝐺‘(𝑘)) = (𝐺‘(𝑖)))
6563, 64eleq12d 2827 . . . . . . . . . . . . . . 15 (𝑘 = 𝑖 → ((‘suc 𝑘) ∈ (𝐺‘(𝑘)) ↔ (‘suc 𝑖) ∈ (𝐺‘(𝑖))))
6665rspcva 3610 . . . . . . . . . . . . . 14 ((𝑖 ∈ ω ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘suc 𝑖) ∈ (𝐺‘(𝑖)))
6766adantrl 714 . . . . . . . . . . . . 13 ((𝑖 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (‘suc 𝑖) ∈ (𝐺‘(𝑖)))
6844sseli 3978 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ 𝑆 → (𝑖) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
69 fvex 6904 . . . . . . . . . . . . . . . . . . . . 21 (𝑖) ∈ V
70 dmeq 5903 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑠 = (𝑖) → dom 𝑠 = dom (𝑖))
7170eleq2d 2819 . . . . . . . . . . . . . . . . . . . . . 22 (𝑠 = (𝑖) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (𝑖)))
7270eleq1d 2818 . . . . . . . . . . . . . . . . . . . . . 22 (𝑠 = (𝑖) → (dom 𝑠 ∈ ω ↔ dom (𝑖) ∈ ω))
7371, 72anbi12d 631 . . . . . . . . . . . . . . . . . . . . 21 (𝑠 = (𝑖) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω)))
7469, 73elab 3668 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω))
7568, 74sylib 217 . . . . . . . . . . . . . . . . . . 19 ((𝑖) ∈ 𝑆 → (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω))
7675simprd 496 . . . . . . . . . . . . . . . . . 18 ((𝑖) ∈ 𝑆 → dom (𝑖) ∈ ω)
77 nnord 7865 . . . . . . . . . . . . . . . . . 18 (dom (𝑖) ∈ ω → Ord dom (𝑖))
78 ordsucelsuc 7812 . . . . . . . . . . . . . . . . . 18 (Ord dom (𝑖) → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
7976, 77, 783syl 18 . . . . . . . . . . . . . . . . 17 ((𝑖) ∈ 𝑆 → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
8079adantr 481 . . . . . . . . . . . . . . . 16 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
81 dmeq 5903 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑥 = (𝑖) → dom 𝑥 = dom (𝑖))
82 suceq 6430 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑥 = dom (𝑖) → suc dom 𝑥 = suc dom (𝑖))
8381, 82syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → suc dom 𝑥 = suc dom (𝑖))
8483eqeq2d 2743 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 = (𝑖) → (dom 𝑦 = suc dom 𝑥 ↔ dom 𝑦 = suc dom (𝑖)))
8581reseq2d 5981 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → (𝑦 ↾ dom 𝑥) = (𝑦 ↾ dom (𝑖)))
86 id 22 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → 𝑥 = (𝑖))
8785, 86eqeq12d 2748 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 = (𝑖) → ((𝑦 ↾ dom 𝑥) = 𝑥 ↔ (𝑦 ↾ dom (𝑖)) = (𝑖)))
8884, 87anbi12d 631 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥 = (𝑖) → ((dom 𝑦 = suc dom 𝑥 ∧ (𝑦 ↾ dom 𝑥) = 𝑥) ↔ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))))
8988rabbidv 3440 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = (𝑖) → {𝑦𝑆 ∣ (dom 𝑦 = suc dom 𝑥 ∧ (𝑦 ↾ dom 𝑥) = 𝑥)} = {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))})
90 axdc3lem2.3 . . . . . . . . . . . . . . . . . . . . . 22 𝐺 = (𝑥𝑆 ↦ {𝑦𝑆 ∣ (dom 𝑦 = suc dom 𝑥 ∧ (𝑦 ↾ dom 𝑥) = 𝑥)})
91 axdc3lem2.1 . . . . . . . . . . . . . . . . . . . . . . . 24 𝐴 ∈ V
9291, 28axdc3lem 10447 . . . . . . . . . . . . . . . . . . . . . . 23 𝑆 ∈ V
9392rabex 5332 . . . . . . . . . . . . . . . . . . . . . 22 {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))} ∈ V
9489, 90, 93fvmpt 6998 . . . . . . . . . . . . . . . . . . . . 21 ((𝑖) ∈ 𝑆 → (𝐺‘(𝑖)) = {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))})
9594eleq2d 2819 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ 𝑆 → ((‘suc 𝑖) ∈ (𝐺‘(𝑖)) ↔ (‘suc 𝑖) ∈ {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))}))
96 dmeq 5903 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑦 = (‘suc 𝑖) → dom 𝑦 = dom (‘suc 𝑖))
9796eqeq1d 2734 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 = (‘suc 𝑖) → (dom 𝑦 = suc dom (𝑖) ↔ dom (‘suc 𝑖) = suc dom (𝑖)))
98 reseq1 5975 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑦 = (‘suc 𝑖) → (𝑦 ↾ dom (𝑖)) = ((‘suc 𝑖) ↾ dom (𝑖)))
9998eqeq1d 2734 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 = (‘suc 𝑖) → ((𝑦 ↾ dom (𝑖)) = (𝑖) ↔ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))
10097, 99anbi12d 631 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 = (‘suc 𝑖) → ((dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖)) ↔ (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖))))
101100elrab 3683 . . . . . . . . . . . . . . . . . . . 20 ((‘suc 𝑖) ∈ {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))} ↔ ((‘suc 𝑖) ∈ 𝑆 ∧ (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖))))
10295, 101bitrdi 286 . . . . . . . . . . . . . . . . . . 19 ((𝑖) ∈ 𝑆 → ((‘suc 𝑖) ∈ (𝐺‘(𝑖)) ↔ ((‘suc 𝑖) ∈ 𝑆 ∧ (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))))
103102simplbda 500 . . . . . . . . . . . . . . . . . 18 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))
104103simpld 495 . . . . . . . . . . . . . . . . 17 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → dom (‘suc 𝑖) = suc dom (𝑖))
105104eleq2d 2819 . . . . . . . . . . . . . . . 16 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (suc 𝑖 ∈ dom (‘suc 𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
10680, 105bitr4d 281 . . . . . . . . . . . . . . 15 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ dom (‘suc 𝑖)))
107106biimpd 228 . . . . . . . . . . . . . 14 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) → suc 𝑖 ∈ dom (‘suc 𝑖)))
108103simprd 496 . . . . . . . . . . . . . . 15 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖))
109 resss 6006 . . . . . . . . . . . . . . . 16 ((‘suc 𝑖) ↾ dom (𝑖)) ⊆ (‘suc 𝑖)
110 sseq1 4007 . . . . . . . . . . . . . . . 16 (((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖) → (((‘suc 𝑖) ↾ dom (𝑖)) ⊆ (‘suc 𝑖) ↔ (𝑖) ⊆ (‘suc 𝑖)))
111109, 110mpbii 232 . . . . . . . . . . . . . . 15 (((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖) → (𝑖) ⊆ (‘suc 𝑖))
112 elsuci 6431 . . . . . . . . . . . . . . . . 17 (𝑗 ∈ suc 𝑖 → (𝑗𝑖𝑗 = 𝑖))
113 pm2.27 42 . . . . . . . . . . . . . . . . . . 19 (𝑗𝑖 → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → (𝑗) ⊆ (𝑖)))
114 sstr2 3989 . . . . . . . . . . . . . . . . . . 19 ((𝑗) ⊆ (𝑖) → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖)))
115113, 114syl6 35 . . . . . . . . . . . . . . . . . 18 (𝑗𝑖 → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖))))
116 fveq2 6891 . . . . . . . . . . . . . . . . . . . . 21 (𝑗 = 𝑖 → (𝑗) = (𝑖))
117116sseq1d 4013 . . . . . . . . . . . . . . . . . . . 20 (𝑗 = 𝑖 → ((𝑗) ⊆ (‘suc 𝑖) ↔ (𝑖) ⊆ (‘suc 𝑖)))
118117biimprd 247 . . . . . . . . . . . . . . . . . . 19 (𝑗 = 𝑖 → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖)))
119118a1d 25 . . . . . . . . . . . . . . . . . 18 (𝑗 = 𝑖 → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖))))
120115, 119jaoi 855 . . . . . . . . . . . . . . . . 17 ((𝑗𝑖𝑗 = 𝑖) → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖))))
121112, 120syl 17 . . . . . . . . . . . . . . . 16 (𝑗 ∈ suc 𝑖 → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → ((𝑖) ⊆ (‘suc 𝑖) → (𝑗) ⊆ (‘suc 𝑖))))
122121com13 88 . . . . . . . . . . . . . . 15 ((𝑖) ⊆ (‘suc 𝑖) → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖))))
123108, 111, 1223syl 18 . . . . . . . . . . . . . 14 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖))))
124107, 123anim12d 609 . . . . . . . . . . . . 13 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → ((𝑖 ∈ dom (𝑖) ∧ (𝑗𝑖 → (𝑗) ⊆ (𝑖))) → (suc 𝑖 ∈ dom (‘suc 𝑖) ∧ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖)))))
12561, 67, 124syl2anc 584 . . . . . . . . . . . 12 ((𝑖 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → ((𝑖 ∈ dom (𝑖) ∧ (𝑗𝑖 → (𝑗) ⊆ (𝑖))) → (suc 𝑖 ∈ dom (‘suc 𝑖) ∧ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖)))))
126125ex 413 . . . . . . . . . . 11 (𝑖 ∈ ω → ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ((𝑖 ∈ dom (𝑖) ∧ (𝑗𝑖 → (𝑗) ⊆ (𝑖))) → (suc 𝑖 ∈ dom (‘suc 𝑖) ∧ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖))))))
1278, 16, 24, 58, 126finds2 7893 . . . . . . . . . 10 (𝑚 ∈ ω → ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚)))))
128127imp 407 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))))
129128simprd 496 . . . . . . . 8 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑗𝑚 → (𝑗) ⊆ (𝑚)))
130129expcom 414 . . . . . . 7 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → (𝑗𝑚 → (𝑗) ⊆ (𝑚))))
131130ralrimdv 3152 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → ∀𝑗𝑚 (𝑗) ⊆ (𝑚)))
132131ralrimiv 3145 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚))
133 frn 6724 . . . . . . . . . . . 12 (:ω⟶𝑆 → ran 𝑆)
134 ffun 6720 . . . . . . . . . . . . . . . 16 (𝑠:suc 𝑛𝐴 → Fun 𝑠)
1351343ad2ant1 1133 . . . . . . . . . . . . . . 15 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → Fun 𝑠)
136135rexlimivw 3151 . . . . . . . . . . . . . 14 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → Fun 𝑠)
137136ss2abi 4063 . . . . . . . . . . . . 13 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ Fun 𝑠}
13828, 137eqsstri 4016 . . . . . . . . . . . 12 𝑆 ⊆ {𝑠 ∣ Fun 𝑠}
139133, 138sstrdi 3994 . . . . . . . . . . 11 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ Fun 𝑠})
140139sseld 3981 . . . . . . . . . 10 (:ω⟶𝑆 → (𝑢 ∈ ran 𝑢 ∈ {𝑠 ∣ Fun 𝑠}))
141 vex 3478 . . . . . . . . . . 11 𝑢 ∈ V
142 funeq 6568 . . . . . . . . . . 11 (𝑠 = 𝑢 → (Fun 𝑠 ↔ Fun 𝑢))
143141, 142elab 3668 . . . . . . . . . 10 (𝑢 ∈ {𝑠 ∣ Fun 𝑠} ↔ Fun 𝑢)
144140, 143imbitrdi 250 . . . . . . . . 9 (:ω⟶𝑆 → (𝑢 ∈ ran → Fun 𝑢))
145144adantr 481 . . . . . . . 8 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → Fun 𝑢))
146 ffn 6717 . . . . . . . . 9 (:ω⟶𝑆 Fn ω)
147 fvelrnb 6952 . . . . . . . . . . . . 13 ( Fn ω → (𝑣 ∈ ran ↔ ∃𝑏 ∈ ω (𝑏) = 𝑣))
148 fvelrnb 6952 . . . . . . . . . . . . . . 15 ( Fn ω → (𝑢 ∈ ran ↔ ∃𝑎 ∈ ω (𝑎) = 𝑢))
149 nnord 7865 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑎 ∈ ω → Ord 𝑎)
150 nnord 7865 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑏 ∈ ω → Ord 𝑏)
151149, 150anim12i 613 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (Ord 𝑎 ∧ Ord 𝑏))
152 ordtri3or 6396 . . . . . . . . . . . . . . . . . . . . . . 23 ((Ord 𝑎 ∧ Ord 𝑏) → (𝑎𝑏𝑎 = 𝑏𝑏𝑎))
153 fveq2 6891 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑚 = 𝑏 → (𝑚) = (𝑏))
154153sseq2d 4014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑚 = 𝑏 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑏)))
155154raleqbi1dv 3333 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑚 = 𝑏 → (∀𝑗𝑚 (𝑗) ⊆ (𝑚) ↔ ∀𝑗𝑏 (𝑗) ⊆ (𝑏)))
156155rspcv 3608 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ∀𝑗𝑏 (𝑗) ⊆ (𝑏)))
157 fveq2 6891 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑗 = 𝑎 → (𝑗) = (𝑎))
158157sseq1d 4013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑗 = 𝑎 → ((𝑗) ⊆ (𝑏) ↔ (𝑎) ⊆ (𝑏)))
159158rspccv 3609 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (∀𝑗𝑏 (𝑗) ⊆ (𝑏) → (𝑎𝑏 → (𝑎) ⊆ (𝑏)))
160156, 159syl6 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑎𝑏 → (𝑎) ⊆ (𝑏))))
161160adantl 482 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑎𝑏 → (𝑎) ⊆ (𝑏))))
1621613imp 1111 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑎𝑏) → (𝑎) ⊆ (𝑏))
163162orcd 871 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑎𝑏) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
1641633exp 1119 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑎𝑏 → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
165164com3r 87 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑎𝑏 → ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
166 fveq2 6891 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎 = 𝑏 → (𝑎) = (𝑏))
167 eqimss 4040 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑎) = (𝑏) → (𝑎) ⊆ (𝑏))
168167orcd 871 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎) = (𝑏) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
169166, 168syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑎 = 𝑏 → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
1701692a1d 26 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑎 = 𝑏 → ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
171 fveq2 6891 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑚 = 𝑎 → (𝑚) = (𝑎))
172171sseq2d 4014 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑚 = 𝑎 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑎)))
173172raleqbi1dv 3333 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑚 = 𝑎 → (∀𝑗𝑚 (𝑗) ⊆ (𝑚) ↔ ∀𝑗𝑎 (𝑗) ⊆ (𝑎)))
174173rspcv 3608 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑎 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ∀𝑗𝑎 (𝑗) ⊆ (𝑎)))
175 fveq2 6891 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑗 = 𝑏 → (𝑗) = (𝑏))
176175sseq1d 4013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑗 = 𝑏 → ((𝑗) ⊆ (𝑎) ↔ (𝑏) ⊆ (𝑎)))
177176rspccv 3609 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (∀𝑗𝑎 (𝑗) ⊆ (𝑎) → (𝑏𝑎 → (𝑏) ⊆ (𝑎)))
178174, 177syl6 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑏𝑎 → (𝑏) ⊆ (𝑎))))
179178adantr 481 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑏𝑎 → (𝑏) ⊆ (𝑎))))
1801793imp 1111 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑏𝑎) → (𝑏) ⊆ (𝑎))
181180olcd 872 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑏𝑎) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
1821813exp 1119 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑏𝑎 → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
183182com3r 87 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑏𝑎 → ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
184165, 170, 1833jaoi 1427 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑎𝑏𝑎 = 𝑏𝑏𝑎) → ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
185152, 184syl 17 . . . . . . . . . . . . . . . . . . . . . 22 ((Ord 𝑎 ∧ Ord 𝑏) → ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))))
186151, 185mpcom 38 . . . . . . . . . . . . . . . . . . . . 21 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎))))
187 sseq12 4009 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → ((𝑎) ⊆ (𝑏) ↔ 𝑢𝑣))
188 sseq12 4009 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑏) = 𝑣 ∧ (𝑎) = 𝑢) → ((𝑏) ⊆ (𝑎) ↔ 𝑣𝑢))
189188ancoms 459 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → ((𝑏) ⊆ (𝑎) ↔ 𝑣𝑢))
190187, 189orbi12d 917 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → (((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)) ↔ (𝑢𝑣𝑣𝑢)))
191190biimpcd 248 . . . . . . . . . . . . . . . . . . . . 21 (((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)) → (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → (𝑢𝑣𝑣𝑢)))
192186, 191syl6 35 . . . . . . . . . . . . . . . . . . . 20 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → (𝑢𝑣𝑣𝑢))))
193192com23 86 . . . . . . . . . . . . . . . . . . 19 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢))))
194193exp4b 431 . . . . . . . . . . . . . . . . . 18 (𝑎 ∈ ω → (𝑏 ∈ ω → ((𝑎) = 𝑢 → ((𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢))))))
195194com23 86 . . . . . . . . . . . . . . . . 17 (𝑎 ∈ ω → ((𝑎) = 𝑢 → (𝑏 ∈ ω → ((𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢))))))
196195rexlimiv 3148 . . . . . . . . . . . . . . . 16 (∃𝑎 ∈ ω (𝑎) = 𝑢 → (𝑏 ∈ ω → ((𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢)))))
197196rexlimdv 3153 . . . . . . . . . . . . . . 15 (∃𝑎 ∈ ω (𝑎) = 𝑢 → (∃𝑏 ∈ ω (𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢))))
198148, 197syl6bi 252 . . . . . . . . . . . . . 14 ( Fn ω → (𝑢 ∈ ran → (∃𝑏 ∈ ω (𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢)))))
199198com23 86 . . . . . . . . . . . . 13 ( Fn ω → (∃𝑏 ∈ ω (𝑏) = 𝑣 → (𝑢 ∈ ran → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢)))))
200147, 199sylbid 239 . . . . . . . . . . . 12 ( Fn ω → (𝑣 ∈ ran → (𝑢 ∈ ran → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢)))))
201200com24 95 . . . . . . . . . . 11 ( Fn ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢 ∈ ran → (𝑣 ∈ ran → (𝑢𝑣𝑣𝑢)))))
202201imp 407 . . . . . . . . . 10 (( Fn ω ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → (𝑣 ∈ ran → (𝑢𝑣𝑣𝑢))))
203202ralrimdv 3152 . . . . . . . . 9 (( Fn ω ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
204146, 203sylan 580 . . . . . . . 8 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
205145, 204jcad 513 . . . . . . 7 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → (Fun 𝑢 ∧ ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢))))
206205ralrimiv 3145 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → ∀𝑢 ∈ ran (Fun 𝑢 ∧ ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
207 fununi 6623 . . . . . 6 (∀𝑢 ∈ ran (Fun 𝑢 ∧ ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)) → Fun ran )
208206, 207syl 17 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → Fun ran )
209132, 208syldan 591 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → Fun ran )
210 vex 3478 . . . . . . . . 9 𝑚 ∈ V
211210eldm2 5901 . . . . . . . 8 (𝑚 ∈ dom ran ↔ ∃𝑢𝑚, 𝑢⟩ ∈ ran )
212 eluni2 4912 . . . . . . . . . 10 (⟨𝑚, 𝑢⟩ ∈ ran ↔ ∃𝑣 ∈ ran 𝑚, 𝑢⟩ ∈ 𝑣)
213210, 141opeldm 5907 . . . . . . . . . . . . . . 15 (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ dom 𝑣)
214213a1i 11 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ dom 𝑣))
215133, 44sstrdi 3994 . . . . . . . . . . . . . . 15 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
216 ssel 3975 . . . . . . . . . . . . . . . 16 (ran ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} → (𝑣 ∈ ran 𝑣 ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}))
217 vex 3478 . . . . . . . . . . . . . . . . . 18 𝑣 ∈ V
218 dmeq 5903 . . . . . . . . . . . . . . . . . . . 20 (𝑠 = 𝑣 → dom 𝑠 = dom 𝑣)
219218eleq2d 2819 . . . . . . . . . . . . . . . . . . 19 (𝑠 = 𝑣 → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom 𝑣))
220218eleq1d 2818 . . . . . . . . . . . . . . . . . . 19 (𝑠 = 𝑣 → (dom 𝑠 ∈ ω ↔ dom 𝑣 ∈ ω))
221219, 220anbi12d 631 . . . . . . . . . . . . . . . . . 18 (𝑠 = 𝑣 → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω)))
222217, 221elab 3668 . . . . . . . . . . . . . . . . 17 (𝑣 ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω))
223222simprbi 497 . . . . . . . . . . . . . . . 16 (𝑣 ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} → dom 𝑣 ∈ ω)
224216, 223syl6 35 . . . . . . . . . . . . . . 15 (ran ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} → (𝑣 ∈ ran → dom 𝑣 ∈ ω))
225215, 224syl 17 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → (𝑣 ∈ ran → dom 𝑣 ∈ ω))
226214, 225anim12d 609 . . . . . . . . . . . . 13 (:ω⟶𝑆 → ((⟨𝑚, 𝑢⟩ ∈ 𝑣𝑣 ∈ ran ) → (𝑚 ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω)))
227 elnn 7868 . . . . . . . . . . . . 13 ((𝑚 ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω) → 𝑚 ∈ ω)
228226, 227syl6 35 . . . . . . . . . . . 12 (:ω⟶𝑆 → ((⟨𝑚, 𝑢⟩ ∈ 𝑣𝑣 ∈ ran ) → 𝑚 ∈ ω))
229228expcomd 417 . . . . . . . . . . 11 (:ω⟶𝑆 → (𝑣 ∈ ran → (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ ω)))
230229rexlimdv 3153 . . . . . . . . . 10 (:ω⟶𝑆 → (∃𝑣 ∈ ran 𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ ω))
231212, 230biimtrid 241 . . . . . . . . 9 (:ω⟶𝑆 → (⟨𝑚, 𝑢⟩ ∈ ran 𝑚 ∈ ω))
232231exlimdv 1936 . . . . . . . 8 (:ω⟶𝑆 → (∃𝑢𝑚, 𝑢⟩ ∈ ran 𝑚 ∈ ω))
233211, 232biimtrid 241 . . . . . . 7 (:ω⟶𝑆 → (𝑚 ∈ dom ran 𝑚 ∈ ω))
234233adantr 481 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom ran 𝑚 ∈ ω))
235 id 22 . . . . . . . . . . 11 (𝑚 ∈ ω → 𝑚 ∈ ω)
236 fnfvelrn 7082 . . . . . . . . . . 11 (( Fn ω ∧ 𝑚 ∈ ω) → (𝑚) ∈ ran )
237146, 235, 236syl2anr 597 . . . . . . . . . 10 ((𝑚 ∈ ω ∧ :ω⟶𝑆) → (𝑚) ∈ ran )
238237adantrr 715 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑚) ∈ ran )
239128simpld 495 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 ∈ dom (𝑚))
240 dmeq 5903 . . . . . . . . . 10 (𝑢 = (𝑚) → dom 𝑢 = dom (𝑚))
241240eliuni 5003 . . . . . . . . 9 (((𝑚) ∈ ran 𝑚 ∈ dom (𝑚)) → 𝑚 𝑢 ∈ ran dom 𝑢)
242238, 239, 241syl2anc 584 . . . . . . . 8 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 𝑢 ∈ ran dom 𝑢)
243 dmuni 5914 . . . . . . . 8 dom ran = 𝑢 ∈ ran dom 𝑢
244242, 243eleqtrrdi 2844 . . . . . . 7 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 ∈ dom ran )
245244expcom 414 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → 𝑚 ∈ dom ran ))
246234, 245impbid 211 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom ran 𝑚 ∈ ω))
247246eqrdv 2730 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → dom ran = ω)
248 rnuni 6148 . . . . . 6 ran ran = 𝑠 ∈ ran ran 𝑠
249 frn 6724 . . . . . . . . . . . . . 14 (𝑠:suc 𝑛𝐴 → ran 𝑠𝐴)
2502493ad2ant1 1133 . . . . . . . . . . . . 13 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → ran 𝑠𝐴)
251250rexlimivw 3151 . . . . . . . . . . . 12 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → ran 𝑠𝐴)
252251ss2abi 4063 . . . . . . . . . . 11 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ ran 𝑠𝐴}
25328, 252eqsstri 4016 . . . . . . . . . 10 𝑆 ⊆ {𝑠 ∣ ran 𝑠𝐴}
254133, 253sstrdi 3994 . . . . . . . . 9 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ ran 𝑠𝐴})
255 ssel 3975 . . . . . . . . . 10 (ran ⊆ {𝑠 ∣ ran 𝑠𝐴} → (𝑠 ∈ ran 𝑠 ∈ {𝑠 ∣ ran 𝑠𝐴}))
256 abid 2713 . . . . . . . . . 10 (𝑠 ∈ {𝑠 ∣ ran 𝑠𝐴} ↔ ran 𝑠𝐴)
257255, 256imbitrdi 250 . . . . . . . . 9 (ran ⊆ {𝑠 ∣ ran 𝑠𝐴} → (𝑠 ∈ ran → ran 𝑠𝐴))
258254, 257syl 17 . . . . . . . 8 (:ω⟶𝑆 → (𝑠 ∈ ran → ran 𝑠𝐴))
259258ralrimiv 3145 . . . . . . 7 (:ω⟶𝑆 → ∀𝑠 ∈ ran ran 𝑠𝐴)
260 iunss 5048 . . . . . . 7 ( 𝑠 ∈ ran ran 𝑠𝐴 ↔ ∀𝑠 ∈ ran ran 𝑠𝐴)
261259, 260sylibr 233 . . . . . 6 (:ω⟶𝑆 𝑠 ∈ ran ran 𝑠𝐴)
262248, 261eqsstrid 4030 . . . . 5 (:ω⟶𝑆 → ran ran 𝐴)
263262adantr 481 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ran ran 𝐴)
264 df-fn 6546 . . . . 5 ( ran Fn ω ↔ (Fun ran ∧ dom ran = ω))
265 df-f 6547 . . . . . 6 ( ran :ω⟶𝐴 ↔ ( ran Fn ω ∧ ran ran 𝐴))
266265biimpri 227 . . . . 5 (( ran Fn ω ∧ ran ran 𝐴) → ran :ω⟶𝐴)
267264, 266sylanbr 582 . . . 4 (((Fun ran ∧ dom ran = ω) ∧ ran ran 𝐴) → ran :ω⟶𝐴)
268209, 247, 263, 267syl21anc 836 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ran :ω⟶𝐴)
269 fnfvelrn 7082 . . . . . . . 8 (( Fn ω ∧ ∅ ∈ ω) → (‘∅) ∈ ran )
270146, 25, 269sylancl 586 . . . . . . 7 (:ω⟶𝑆 → (‘∅) ∈ ran )
271270adantr 481 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘∅) ∈ ran )
272 elssuni 4941 . . . . . 6 ((‘∅) ∈ ran → (‘∅) ⊆ ran )
273271, 272syl 17 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘∅) ⊆ ran )
27454adantr 481 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∅ ∈ dom (‘∅))
275 funssfv 6912 . . . . 5 ((Fun ran ∧ (‘∅) ⊆ ran ∧ ∅ ∈ dom (‘∅)) → ( ran ‘∅) = ((‘∅)‘∅))
276209, 273, 274, 275syl3anc 1371 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ( ran ‘∅) = ((‘∅)‘∅))
277 simp2 1137 . . . . . . . . . . 11 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑠‘∅) = 𝐶)
278277rexlimivw 3151 . . . . . . . . . 10 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑠‘∅) = 𝐶)
279278ss2abi 4063 . . . . . . . . 9 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶}
28028, 279eqsstri 4016 . . . . . . . 8 𝑆 ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶}
281133, 280sstrdi 3994 . . . . . . 7 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶})
282 ssel 3975 . . . . . . . 8 (ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶} → ((‘∅) ∈ ran → (‘∅) ∈ {𝑠 ∣ (𝑠‘∅) = 𝐶}))
283 fveq1 6890 . . . . . . . . . 10 (𝑠 = (‘∅) → (𝑠‘∅) = ((‘∅)‘∅))
284283eqeq1d 2734 . . . . . . . . 9 (𝑠 = (‘∅) → ((𝑠‘∅) = 𝐶 ↔ ((‘∅)‘∅) = 𝐶))
28546, 284elab 3668 . . . . . . . 8 ((‘∅) ∈ {𝑠 ∣ (𝑠‘∅) = 𝐶} ↔ ((‘∅)‘∅) = 𝐶)
286282, 285imbitrdi 250 . . . . . . 7 (ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶} → ((‘∅) ∈ ran → ((‘∅)‘∅) = 𝐶))
287281, 286syl 17 . . . . . 6 (:ω⟶𝑆 → ((‘∅) ∈ ran → ((‘∅)‘∅) = 𝐶))
288287adantr 481 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ((‘∅) ∈ ran → ((‘∅)‘∅) = 𝐶))
289271, 288mpd 15 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ((‘∅)‘∅) = 𝐶)
290276, 289eqtrd 2772 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ( ran ‘∅) = 𝐶)
291 nfv 1917 . . . . 5 𝑘 :ω⟶𝑆
292 nfra1 3281 . . . . 5 𝑘𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))
293291, 292nfan 1902 . . . 4 𝑘(:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))
294133ad2antrr 724 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ran 𝑆)
295 peano2 7883 . . . . . . . . 9 (𝑘 ∈ ω → suc 𝑘 ∈ ω)
296 fnfvelrn 7082 . . . . . . . . 9 (( Fn ω ∧ suc 𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
297146, 295, 296syl2an 596 . . . . . . . 8 ((:ω⟶𝑆𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
298297adantlr 713 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
299239expcom 414 . . . . . . . . 9 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → 𝑚 ∈ dom (𝑚)))
300299ralrimiv 3145 . . . . . . . 8 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∀𝑚 ∈ ω 𝑚 ∈ dom (𝑚))
301 id 22 . . . . . . . . . . 11 (𝑚 = suc 𝑘𝑚 = suc 𝑘)
302 fveq2 6891 . . . . . . . . . . . 12 (𝑚 = suc 𝑘 → (𝑚) = (‘suc 𝑘))
303302dmeqd 5905 . . . . . . . . . . 11 (𝑚 = suc 𝑘 → dom (𝑚) = dom (‘suc 𝑘))
304301, 303eleq12d 2827 . . . . . . . . . 10 (𝑚 = suc 𝑘 → (𝑚 ∈ dom (𝑚) ↔ suc 𝑘 ∈ dom (‘suc 𝑘)))
305304rspcv 3608 . . . . . . . . 9 (suc 𝑘 ∈ ω → (∀𝑚 ∈ ω 𝑚 ∈ dom (𝑚) → suc 𝑘 ∈ dom (‘suc 𝑘)))
306295, 305syl 17 . . . . . . . 8 (𝑘 ∈ ω → (∀𝑚 ∈ ω 𝑚 ∈ dom (𝑚) → suc 𝑘 ∈ dom (‘suc 𝑘)))
307300, 306mpan9 507 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → suc 𝑘 ∈ dom (‘suc 𝑘))
308 eleq2 2822 . . . . . . . . . . . . . . . . . . . . 21 (dom 𝑠 = suc 𝑛 → (suc 𝑘 ∈ dom 𝑠 ↔ suc 𝑘 ∈ suc 𝑛))
309308biimpa 477 . . . . . . . . . . . . . . . . . . . 20 ((dom 𝑠 = suc 𝑛 ∧ suc 𝑘 ∈ dom 𝑠) → suc 𝑘 ∈ suc 𝑛)
31029, 309sylan 580 . . . . . . . . . . . . . . . . . . 19 ((𝑠:suc 𝑛𝐴 ∧ suc 𝑘 ∈ dom 𝑠) → suc 𝑘 ∈ suc 𝑛)
311 ordsucelsuc 7812 . . . . . . . . . . . . . . . . . . . . . . 23 (Ord 𝑛 → (𝑘𝑛 ↔ suc 𝑘 ∈ suc 𝑛))
31230, 311syl 17 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 ∈ ω → (𝑘𝑛 ↔ suc 𝑘 ∈ suc 𝑛))
313312biimprd 247 . . . . . . . . . . . . . . . . . . . . 21 (𝑛 ∈ ω → (suc 𝑘 ∈ suc 𝑛𝑘𝑛))
314 rsp 3244 . . . . . . . . . . . . . . . . . . . . 21 (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑘𝑛 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))
315313, 314syl9r 78 . . . . . . . . . . . . . . . . . . . 20 (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑛 ∈ ω → (suc 𝑘 ∈ suc 𝑛 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
316315com13 88 . . . . . . . . . . . . . . . . . . 19 (suc 𝑘 ∈ suc 𝑛 → (𝑛 ∈ ω → (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
317310, 316syl 17 . . . . . . . . . . . . . . . . . 18 ((𝑠:suc 𝑛𝐴 ∧ suc 𝑘 ∈ dom 𝑠) → (𝑛 ∈ ω → (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
318317ex 413 . . . . . . . . . . . . . . . . 17 (𝑠:suc 𝑛𝐴 → (suc 𝑘 ∈ dom 𝑠 → (𝑛 ∈ ω → (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))))
319318com24 95 . . . . . . . . . . . . . . . 16 (𝑠:suc 𝑛𝐴 → (∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) → (𝑛 ∈ ω → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))))
320319imp 407 . . . . . . . . . . . . . . 15 ((𝑠:suc 𝑛𝐴 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
3213203adant2 1131 . . . . . . . . . . . . . 14 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
322321impcom 408 . . . . . . . . . . . . 13 ((𝑛 ∈ ω ∧ (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))) → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))
323322rexlimiva 3147 . . . . . . . . . . . 12 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))
324323ss2abi 4063 . . . . . . . . . . 11 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}
32528, 324eqsstri 4016 . . . . . . . . . 10 𝑆 ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}
326 sstr 3990 . . . . . . . . . 10 ((ran 𝑆𝑆 ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}) → ran ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))})
327325, 326mpan2 689 . . . . . . . . 9 (ran 𝑆 → ran ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))})
328327sseld 3981 . . . . . . . 8 (ran 𝑆 → ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ∈ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}))
329 fvex 6904 . . . . . . . . 9 (‘suc 𝑘) ∈ V
330 dmeq 5903 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → dom 𝑠 = dom (‘suc 𝑘))
331330eleq2d 2819 . . . . . . . . . 10 (𝑠 = (‘suc 𝑘) → (suc 𝑘 ∈ dom 𝑠 ↔ suc 𝑘 ∈ dom (‘suc 𝑘)))
332 fveq1 6890 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → (𝑠‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
333 fveq1 6890 . . . . . . . . . . . 12 (𝑠 = (‘suc 𝑘) → (𝑠𝑘) = ((‘suc 𝑘)‘𝑘))
334333fveq2d 6895 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → (𝐹‘(𝑠𝑘)) = (𝐹‘((‘suc 𝑘)‘𝑘)))
335332, 334eleq12d 2827 . . . . . . . . . 10 (𝑠 = (‘suc 𝑘) → ((𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) ↔ ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘))))
336331, 335imbi12d 344 . . . . . . . . 9 (𝑠 = (‘suc 𝑘) → ((suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) ↔ (suc 𝑘 ∈ dom (‘suc 𝑘) → ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘)))))
337329, 336elab 3668 . . . . . . . 8 ((‘suc 𝑘) ∈ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ↔ (suc 𝑘 ∈ dom (‘suc 𝑘) → ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘))))
338328, 337imbitrdi 250 . . . . . . 7 (ran 𝑆 → ((‘suc 𝑘) ∈ ran → (suc 𝑘 ∈ dom (‘suc 𝑘) → ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘)))))
339294, 298, 307, 338syl3c 66 . . . . . 6 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘)))
340209adantr 481 . . . . . . . 8 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → Fun ran )
341 elssuni 4941 . . . . . . . . . 10 ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ⊆ ran )
342297, 341syl 17 . . . . . . . . 9 ((:ω⟶𝑆𝑘 ∈ ω) → (‘suc 𝑘) ⊆ ran )
343342adantlr 713 . . . . . . . 8 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (‘suc 𝑘) ⊆ ran )
344 funssfv 6912 . . . . . . . 8 ((Fun ran ∧ (‘suc 𝑘) ⊆ ran ∧ suc 𝑘 ∈ dom (‘suc 𝑘)) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
345340, 343, 307, 344syl3anc 1371 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
346215sseld 3981 . . . . . . . . . . . . . . 15 (:ω⟶𝑆 → ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}))
347330eleq2d 2819 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘suc 𝑘) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (‘suc 𝑘)))
348330eleq1d 2818 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘suc 𝑘) → (dom 𝑠 ∈ ω ↔ dom (‘suc 𝑘) ∈ ω))
349347, 348anbi12d 631 . . . . . . . . . . . . . . . 16 (𝑠 = (‘suc 𝑘) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω)))
350329, 349elab 3668 . . . . . . . . . . . . . . 15 ((‘suc 𝑘) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω))
351346, 350imbitrdi 250 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → ((‘suc 𝑘) ∈ ran → (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω)))
352351adantr 481 . . . . . . . . . . . . 13 ((:ω⟶𝑆𝑘 ∈ ω) → ((‘suc 𝑘) ∈ ran → (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω)))
353297, 352mpd 15 . . . . . . . . . . . 12 ((:ω⟶𝑆𝑘 ∈ ω) → (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω))
354353simprd 496 . . . . . . . . . . 11 ((:ω⟶𝑆𝑘 ∈ ω) → dom (‘suc 𝑘) ∈ ω)
355 nnord 7865 . . . . . . . . . . 11 (dom (‘suc 𝑘) ∈ ω → Ord dom (‘suc 𝑘))
356 ordtr 6378 . . . . . . . . . . 11 (Ord dom (‘suc 𝑘) → Tr dom (‘suc 𝑘))
357 trsuc 6451 . . . . . . . . . . . 12 ((Tr dom (‘suc 𝑘) ∧ suc 𝑘 ∈ dom (‘suc 𝑘)) → 𝑘 ∈ dom (‘suc 𝑘))
358357ex 413 . . . . . . . . . . 11 (Tr dom (‘suc 𝑘) → (suc 𝑘 ∈ dom (‘suc 𝑘) → 𝑘 ∈ dom (‘suc 𝑘)))
359354, 355, 356, 3584syl 19 . . . . . . . . . 10 ((:ω⟶𝑆𝑘 ∈ ω) → (suc 𝑘 ∈ dom (‘suc 𝑘) → 𝑘 ∈ dom (‘suc 𝑘)))
360359adantlr 713 . . . . . . . . 9 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (suc 𝑘 ∈ dom (‘suc 𝑘) → 𝑘 ∈ dom (‘suc 𝑘)))
361307, 360mpd 15 . . . . . . . 8 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → 𝑘 ∈ dom (‘suc 𝑘))
362 funssfv 6912 . . . . . . . 8 ((Fun ran ∧ (‘suc 𝑘) ⊆ ran 𝑘 ∈ dom (‘suc 𝑘)) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
363340, 343, 361, 362syl3anc 1371 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
364 simpl 483 . . . . . . . 8 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
365 simpr 485 . . . . . . . . 9 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
366365fveq2d 6895 . . . . . . . 8 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → (𝐹‘( ran 𝑘)) = (𝐹‘((‘suc 𝑘)‘𝑘)))
367364, 366eleq12d 2827 . . . . . . 7 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → (( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)) ↔ ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘))))
368345, 363, 367syl2anc 584 . . . . . 6 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)) ↔ ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘))))
369339, 368mpbird 256 . . . . 5 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)))
370369ex 413 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑘 ∈ ω → ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
371293, 370ralrimi 3254 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)))
372 vex 3478 . . . . . 6 ∈ V
373372rnex 7905 . . . . 5 ran ∈ V
374373uniex 7733 . . . 4 ran ∈ V
375 feq1 6698 . . . . 5 (𝑔 = ran → (𝑔:ω⟶𝐴 ran :ω⟶𝐴))
376 fveq1 6890 . . . . . 6 (𝑔 = ran → (𝑔‘∅) = ( ran ‘∅))
377376eqeq1d 2734 . . . . 5 (𝑔 = ran → ((𝑔‘∅) = 𝐶 ↔ ( ran ‘∅) = 𝐶))
378 fveq1 6890 . . . . . . 7 (𝑔 = ran → (𝑔‘suc 𝑘) = ( ran ‘suc 𝑘))
379 fveq1 6890 . . . . . . . 8 (𝑔 = ran → (𝑔𝑘) = ( ran 𝑘))
380379fveq2d 6895 . . . . . . 7 (𝑔 = ran → (𝐹‘(𝑔𝑘)) = (𝐹‘( ran 𝑘)))
381378, 380eleq12d 2827 . . . . . 6 (𝑔 = ran → ((𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘)) ↔ ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
382381ralbidv 3177 . . . . 5 (𝑔 = ran → (∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘)) ↔ ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
383375, 377, 3823anbi123d 1436 . . . 4 (𝑔 = ran → ((𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))) ↔ ( ran :ω⟶𝐴 ∧ ( ran ‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)))))
384374, 383spcev 3596 . . 3 (( ran :ω⟶𝐴 ∧ ( ran ‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))) → ∃𝑔(𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))))
385268, 290, 371, 384syl3anc 1371 . 2 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∃𝑔(𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))))
386385exlimiv 1933 1 (∃(:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∃𝑔(𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396  wo 845  w3o 1086  w3a 1087   = wceq 1541  wex 1781  wcel 2106  {cab 2709  wral 3061  wrex 3070  {crab 3432  Vcvv 3474  wss 3948  c0 4322  cop 4634   cuni 4908   ciun 4997  cmpt 5231  Tr wtr 5265  dom cdm 5676  ran crn 5677  cres 5678  Ord word 6363  suc csuc 6366  Fun wfun 6537   Fn wfn 6538  wf 6539  cfv 6543  ωcom 7857
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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2703  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7727  ax-dc 10443
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2534  df-eu 2563  df-clab 2710  df-cleq 2724  df-clel 2810  df-nfc 2885  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3433  df-v 3476  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-iun 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ord 6367  df-on 6368  df-lim 6369  df-suc 6370  df-iota 6495  df-fun 6545  df-fn 6546  df-f 6547  df-fv 6551  df-om 7858  df-1o 8468
This theorem is referenced by:  axdc3lem4  10450
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