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Theorem axdc3lem2 9558
Description: Lemma for axdc3 9561. 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 9553 (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 9553 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 6408 . . . . . . . . . . . . . 14 (𝑚 = ∅ → (𝑚) = (‘∅))
32dmeqd 5527 . . . . . . . . . . . . 13 (𝑚 = ∅ → dom (𝑚) = dom (‘∅))
41, 3eleq12d 2879 . . . . . . . . . . . 12 (𝑚 = ∅ → (𝑚 ∈ dom (𝑚) ↔ ∅ ∈ dom (‘∅)))
5 eleq2 2874 . . . . . . . . . . . . 13 (𝑚 = ∅ → (𝑗𝑚𝑗 ∈ ∅))
62sseq2d 3830 . . . . . . . . . . . . 13 (𝑚 = ∅ → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (‘∅)))
75, 6imbi12d 335 . . . . . . . . . . . 12 (𝑚 = ∅ → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
84, 7anbi12d 618 . . . . . . . . . . 11 (𝑚 = ∅ → ((𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))) ↔ (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅)))))
9 id 22 . . . . . . . . . . . . 13 (𝑚 = 𝑖𝑚 = 𝑖)
10 fveq2 6408 . . . . . . . . . . . . . 14 (𝑚 = 𝑖 → (𝑚) = (𝑖))
1110dmeqd 5527 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → dom (𝑚) = dom (𝑖))
129, 11eleq12d 2879 . . . . . . . . . . . 12 (𝑚 = 𝑖 → (𝑚 ∈ dom (𝑚) ↔ 𝑖 ∈ dom (𝑖)))
13 elequ2 2170 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → (𝑗𝑚𝑗𝑖))
1410sseq2d 3830 . . . . . . . . . . . . 13 (𝑚 = 𝑖 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑖)))
1513, 14imbi12d 335 . . . . . . . . . . . 12 (𝑚 = 𝑖 → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗𝑖 → (𝑗) ⊆ (𝑖))))
1612, 15anbi12d 618 . . . . . . . . . . 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 6408 . . . . . . . . . . . . . 14 (𝑚 = suc 𝑖 → (𝑚) = (‘suc 𝑖))
1918dmeqd 5527 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → dom (𝑚) = dom (‘suc 𝑖))
2017, 19eleq12d 2879 . . . . . . . . . . . 12 (𝑚 = suc 𝑖 → (𝑚 ∈ dom (𝑚) ↔ suc 𝑖 ∈ dom (‘suc 𝑖)))
21 eleq2 2874 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → (𝑗𝑚𝑗 ∈ suc 𝑖))
2218sseq2d 3830 . . . . . . . . . . . . 13 (𝑚 = suc 𝑖 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (‘suc 𝑖)))
2321, 22imbi12d 335 . . . . . . . . . . . 12 (𝑚 = suc 𝑖 → ((𝑗𝑚 → (𝑗) ⊆ (𝑚)) ↔ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖))))
2420, 23anbi12d 618 . . . . . . . . . . 11 (𝑚 = suc 𝑖 → ((𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))) ↔ (suc 𝑖 ∈ dom (‘suc 𝑖) ∧ (𝑗 ∈ suc 𝑖 → (𝑗) ⊆ (‘suc 𝑖)))))
25 peano1 7315 . . . . . . . . . . . . . . 15 ∅ ∈ ω
26 ffvelrn 6579 . . . . . . . . . . . . . . 15 ((:ω⟶𝑆 ∧ ∅ ∈ ω) → (‘∅) ∈ 𝑆)
2725, 26mpan2 674 . . . . . . . . . . . . . 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 6264 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑠:suc 𝑛𝐴 → dom 𝑠 = suc 𝑛)
30 nnord 7303 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑛 ∈ ω → Ord 𝑛)
31 0elsuc 7265 . . . . . . . . . . . . . . . . . . . . . . . . 25 (Ord 𝑛 → ∅ ∈ suc 𝑛)
3230, 31syl 17 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑛 ∈ ω → ∅ ∈ suc 𝑛)
33 peano2 7316 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑛 ∈ ω → suc 𝑛 ∈ ω)
34 eleq2 2874 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑠 = suc 𝑛 → (∅ ∈ dom 𝑠 ↔ ∅ ∈ suc 𝑛))
35 eleq1 2873 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑠 = suc 𝑛 → (dom 𝑠 ∈ ω ↔ suc 𝑛 ∈ ω))
3634, 35anbi12d 618 . . . . . . . . . . . . . . . . . . . . . . . . 25 (dom 𝑠 = suc 𝑛 → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ suc 𝑛 ∧ suc 𝑛 ∈ ω)))
3736biimprcd 241 . . . . . . . . . . . . . . . . . . . . . . . 24 ((∅ ∈ suc 𝑛 ∧ suc 𝑛 ∈ ω) → (dom 𝑠 = suc 𝑛 → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
3832, 33, 37syl2anc 575 . . . . . . . . . . . . . . . . . . . . . . 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 1156 . . . . . . . . . . . . . . . . . . . . 21 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)))
4140impcom 396 . . . . . . . . . . . . . . . . . . . 20 ((𝑛 ∈ ω ∧ (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))) → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω))
4241rexlimiva 3216 . . . . . . . . . . . . . . . . . . 19 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω))
4342ss2abi 3871 . . . . . . . . . . . . . . . . . 18 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}
4428, 43eqsstri 3832 . . . . . . . . . . . . . . . . 17 𝑆 ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}
4544sseli 3794 . . . . . . . . . . . . . . . 16 ((‘∅) ∈ 𝑆 → (‘∅) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
46 fvex 6421 . . . . . . . . . . . . . . . . 17 (‘∅) ∈ V
47 dmeq 5525 . . . . . . . . . . . . . . . . . . 19 (𝑠 = (‘∅) → dom 𝑠 = dom (‘∅))
4847eleq2d 2871 . . . . . . . . . . . . . . . . . 18 (𝑠 = (‘∅) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (‘∅)))
4947eleq1d 2870 . . . . . . . . . . . . . . . . . 18 (𝑠 = (‘∅) → (dom 𝑠 ∈ ω ↔ dom (‘∅) ∈ ω))
5048, 49anbi12d 618 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘∅) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω)))
5146, 50elab 3545 . . . . . . . . . . . . . . . 16 ((‘∅) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω))
5245, 51sylib 209 . . . . . . . . . . . . . . 15 ((‘∅) ∈ 𝑆 → (∅ ∈ dom (‘∅) ∧ dom (‘∅) ∈ ω))
5352simpld 484 . . . . . . . . . . . . . 14 ((‘∅) ∈ 𝑆 → ∅ ∈ dom (‘∅))
5427, 53syl 17 . . . . . . . . . . . . 13 (:ω⟶𝑆 → ∅ ∈ dom (‘∅))
55 noel 4120 . . . . . . . . . . . . . 14 ¬ 𝑗 ∈ ∅
5655pm2.21i 117 . . . . . . . . . . . . 13 (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))
5754, 56jctir 512 . . . . . . . . . . . 12 (:ω⟶𝑆 → (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
5857adantr 468 . . . . . . . . . . 11 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (∅ ∈ dom (‘∅) ∧ (𝑗 ∈ ∅ → (𝑗) ⊆ (‘∅))))
59 ffvelrn 6579 . . . . . . . . . . . . . . 15 ((:ω⟶𝑆𝑖 ∈ ω) → (𝑖) ∈ 𝑆)
6059ancoms 448 . . . . . . . . . . . . . 14 ((𝑖 ∈ ω ∧ :ω⟶𝑆) → (𝑖) ∈ 𝑆)
6160adantrr 699 . . . . . . . . . . . . 13 ((𝑖 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑖) ∈ 𝑆)
62 suceq 6003 . . . . . . . . . . . . . . . . 17 (𝑘 = 𝑖 → suc 𝑘 = suc 𝑖)
6362fveq2d 6412 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑖 → (‘suc 𝑘) = (‘suc 𝑖))
64 2fveq3 6413 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑖 → (𝐺‘(𝑘)) = (𝐺‘(𝑖)))
6563, 64eleq12d 2879 . . . . . . . . . . . . . . 15 (𝑘 = 𝑖 → ((‘suc 𝑘) ∈ (𝐺‘(𝑘)) ↔ (‘suc 𝑖) ∈ (𝐺‘(𝑖))))
6665rspcva 3500 . . . . . . . . . . . . . 14 ((𝑖 ∈ ω ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘suc 𝑖) ∈ (𝐺‘(𝑖)))
6766adantrl 698 . . . . . . . . . . . . 13 ((𝑖 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (‘suc 𝑖) ∈ (𝐺‘(𝑖)))
6844sseli 3794 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ 𝑆 → (𝑖) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
69 fvex 6421 . . . . . . . . . . . . . . . . . . . . 21 (𝑖) ∈ V
70 dmeq 5525 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑠 = (𝑖) → dom 𝑠 = dom (𝑖))
7170eleq2d 2871 . . . . . . . . . . . . . . . . . . . . . 22 (𝑠 = (𝑖) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (𝑖)))
7270eleq1d 2870 . . . . . . . . . . . . . . . . . . . . . 22 (𝑠 = (𝑖) → (dom 𝑠 ∈ ω ↔ dom (𝑖) ∈ ω))
7371, 72anbi12d 618 . . . . . . . . . . . . . . . . . . . . 21 (𝑠 = (𝑖) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω)))
7469, 73elab 3545 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω))
7568, 74sylib 209 . . . . . . . . . . . . . . . . . . 19 ((𝑖) ∈ 𝑆 → (∅ ∈ dom (𝑖) ∧ dom (𝑖) ∈ ω))
7675simprd 485 . . . . . . . . . . . . . . . . . 18 ((𝑖) ∈ 𝑆 → dom (𝑖) ∈ ω)
77 nnord 7303 . . . . . . . . . . . . . . . . . 18 (dom (𝑖) ∈ ω → Ord dom (𝑖))
78 ordsucelsuc 7252 . . . . . . . . . . . . . . . . . 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 468 . . . . . . . . . . . . . . . 16 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
81 dmeq 5525 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑥 = (𝑖) → dom 𝑥 = dom (𝑖))
82 suceq 6003 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑥 = dom (𝑖) → suc dom 𝑥 = suc dom (𝑖))
8381, 82syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → suc dom 𝑥 = suc dom (𝑖))
8483eqeq2d 2816 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 = (𝑖) → (dom 𝑦 = suc dom 𝑥 ↔ dom 𝑦 = suc dom (𝑖)))
8581reseq2d 5597 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → (𝑦 ↾ dom 𝑥) = (𝑦 ↾ dom (𝑖)))
86 id 22 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥 = (𝑖) → 𝑥 = (𝑖))
8785, 86eqeq12d 2821 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 = (𝑖) → ((𝑦 ↾ dom 𝑥) = 𝑥 ↔ (𝑦 ↾ dom (𝑖)) = (𝑖)))
8884, 87anbi12d 618 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥 = (𝑖) → ((dom 𝑦 = suc dom 𝑥 ∧ (𝑦 ↾ dom 𝑥) = 𝑥) ↔ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))))
8988rabbidv 3379 . . . . . . . . . . . . . . . . . . . . . 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 9557 . . . . . . . . . . . . . . . . . . . . . . 23 𝑆 ∈ V
9392rabex 5007 . . . . . . . . . . . . . . . . . . . . . 22 {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))} ∈ V
9489, 90, 93fvmpt 6503 . . . . . . . . . . . . . . . . . . . . 21 ((𝑖) ∈ 𝑆 → (𝐺‘(𝑖)) = {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))})
9594eleq2d 2871 . . . . . . . . . . . . . . . . . . . 20 ((𝑖) ∈ 𝑆 → ((‘suc 𝑖) ∈ (𝐺‘(𝑖)) ↔ (‘suc 𝑖) ∈ {𝑦𝑆 ∣ (dom 𝑦 = suc dom (𝑖) ∧ (𝑦 ↾ dom (𝑖)) = (𝑖))}))
96 dmeq 5525 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑦 = (‘suc 𝑖) → dom 𝑦 = dom (‘suc 𝑖))
9796eqeq1d 2808 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 = (‘suc 𝑖) → (dom 𝑦 = suc dom (𝑖) ↔ dom (‘suc 𝑖) = suc dom (𝑖)))
98 reseq1 5591 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑦 = (‘suc 𝑖) → (𝑦 ↾ dom (𝑖)) = ((‘suc 𝑖) ↾ dom (𝑖)))
9998eqeq1d 2808 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 = (‘suc 𝑖) → ((𝑦 ↾ dom (𝑖)) = (𝑖) ↔ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))
10097, 99anbi12d 618 . . . . . . . . . . . . . . . . . . . . 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 3559 . . . . . . . . . . . . . . . . . . . 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, 101syl6bb 278 . . . . . . . . . . . . . . . . . . 19 ((𝑖) ∈ 𝑆 → ((‘suc 𝑖) ∈ (𝐺‘(𝑖)) ↔ ((‘suc 𝑖) ∈ 𝑆 ∧ (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))))
103102simplbda 489 . . . . . . . . . . . . . . . . . 18 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (dom (‘suc 𝑖) = suc dom (𝑖) ∧ ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖)))
104103simpld 484 . . . . . . . . . . . . . . . . 17 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → dom (‘suc 𝑖) = suc dom (𝑖))
105104eleq2d 2871 . . . . . . . . . . . . . . . 16 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (suc 𝑖 ∈ dom (‘suc 𝑖) ↔ suc 𝑖 ∈ suc dom (𝑖)))
10680, 105bitr4d 273 . . . . . . . . . . . . . . 15 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) ↔ suc 𝑖 ∈ dom (‘suc 𝑖)))
107106biimpd 220 . . . . . . . . . . . . . 14 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → (𝑖 ∈ dom (𝑖) → suc 𝑖 ∈ dom (‘suc 𝑖)))
108103simprd 485 . . . . . . . . . . . . . . 15 (((𝑖) ∈ 𝑆 ∧ (‘suc 𝑖) ∈ (𝐺‘(𝑖))) → ((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖))
109 resss 5625 . . . . . . . . . . . . . . . 16 ((‘suc 𝑖) ↾ dom (𝑖)) ⊆ (‘suc 𝑖)
110 sseq1 3823 . . . . . . . . . . . . . . . 16 (((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖) → (((‘suc 𝑖) ↾ dom (𝑖)) ⊆ (‘suc 𝑖) ↔ (𝑖) ⊆ (‘suc 𝑖)))
111109, 110mpbii 224 . . . . . . . . . . . . . . 15 (((‘suc 𝑖) ↾ dom (𝑖)) = (𝑖) → (𝑖) ⊆ (‘suc 𝑖))
112 elsuci 6004 . . . . . . . . . . . . . . . . 17 (𝑗 ∈ suc 𝑖 → (𝑗𝑖𝑗 = 𝑖))
113 pm2.27 42 . . . . . . . . . . . . . . . . . . 19 (𝑗𝑖 → ((𝑗𝑖 → (𝑗) ⊆ (𝑖)) → (𝑗) ⊆ (𝑖)))
114 sstr2 3805 . . . . . . . . . . . . . . . . . . 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 6408 . . . . . . . . . . . . . . . . . . . . 21 (𝑗 = 𝑖 → (𝑗) = (𝑖))
117116sseq1d 3829 . . . . . . . . . . . . . . . . . . . 20 (𝑗 = 𝑖 → ((𝑗) ⊆ (‘suc 𝑖) ↔ (𝑖) ⊆ (‘suc 𝑖)))
118117biimprd 239 . . . . . . . . . . . . . . . . . . 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 875 . . . . . . . . . . . . . . . . 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 598 . . . . . . . . . . . . 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 575 . . . . . . . . . . . 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 399 . . . . . . . . . . 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 7324 . . . . . . . . . 10 (𝑚 ∈ ω → ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚)))))
128127imp 395 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑚 ∈ dom (𝑚) ∧ (𝑗𝑚 → (𝑗) ⊆ (𝑚))))
129128simprd 485 . . . . . . . 8 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑗𝑚 → (𝑗) ⊆ (𝑚)))
130129expcom 400 . . . . . . 7 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → (𝑗𝑚 → (𝑗) ⊆ (𝑚))))
131130ralrimdv 3156 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → ∀𝑗𝑚 (𝑗) ⊆ (𝑚)))
132131ralrimiv 3153 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚))
133 frn 6262 . . . . . . . . . . . 12 (:ω⟶𝑆 → ran 𝑆)
134 ffun 6259 . . . . . . . . . . . . . . . 16 (𝑠:suc 𝑛𝐴 → Fun 𝑠)
1351343ad2ant1 1156 . . . . . . . . . . . . . . 15 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → Fun 𝑠)
136135rexlimivw 3217 . . . . . . . . . . . . . 14 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → Fun 𝑠)
137136ss2abi 3871 . . . . . . . . . . . . 13 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ Fun 𝑠}
13828, 137eqsstri 3832 . . . . . . . . . . . 12 𝑆 ⊆ {𝑠 ∣ Fun 𝑠}
139133, 138syl6ss 3810 . . . . . . . . . . 11 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ Fun 𝑠})
140139sseld 3797 . . . . . . . . . 10 (:ω⟶𝑆 → (𝑢 ∈ ran 𝑢 ∈ {𝑠 ∣ Fun 𝑠}))
141 vex 3394 . . . . . . . . . . 11 𝑢 ∈ V
142 funeq 6121 . . . . . . . . . . 11 (𝑠 = 𝑢 → (Fun 𝑠 ↔ Fun 𝑢))
143141, 142elab 3545 . . . . . . . . . 10 (𝑢 ∈ {𝑠 ∣ Fun 𝑠} ↔ Fun 𝑢)
144140, 143syl6ib 242 . . . . . . . . 9 (:ω⟶𝑆 → (𝑢 ∈ ran → Fun 𝑢))
145144adantr 468 . . . . . . . 8 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → Fun 𝑢))
146 ffn 6256 . . . . . . . . 9 (:ω⟶𝑆 Fn ω)
147 fvelrnb 6464 . . . . . . . . . . . . 13 ( Fn ω → (𝑣 ∈ ran ↔ ∃𝑏 ∈ ω (𝑏) = 𝑣))
148 fvelrnb 6464 . . . . . . . . . . . . . . 15 ( Fn ω → (𝑢 ∈ ran ↔ ∃𝑎 ∈ ω (𝑎) = 𝑢))
149 nnord 7303 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑎 ∈ ω → Ord 𝑎)
150 nnord 7303 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑏 ∈ ω → Ord 𝑏)
151149, 150anim12i 602 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (Ord 𝑎 ∧ Ord 𝑏))
152 ordtri3or 5968 . . . . . . . . . . . . . . . . . . . . . . 23 ((Ord 𝑎 ∧ Ord 𝑏) → (𝑎𝑏𝑎 = 𝑏𝑏𝑎))
153 fveq2 6408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑚 = 𝑏 → (𝑚) = (𝑏))
154153sseq2d 3830 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑚 = 𝑏 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑏)))
155154raleqbi1dv 3335 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑚 = 𝑏 → (∀𝑗𝑚 (𝑗) ⊆ (𝑚) ↔ ∀𝑗𝑏 (𝑗) ⊆ (𝑏)))
156155rspcv 3498 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ∀𝑗𝑏 (𝑗) ⊆ (𝑏)))
157 fveq2 6408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑗 = 𝑎 → (𝑗) = (𝑎))
158157sseq1d 3829 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑗 = 𝑎 → ((𝑗) ⊆ (𝑏) ↔ (𝑎) ⊆ (𝑏)))
159158rspccv 3499 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (∀𝑗𝑏 (𝑗) ⊆ (𝑏) → (𝑎𝑏 → (𝑎) ⊆ (𝑏)))
160156, 159syl6 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑎𝑏 → (𝑎) ⊆ (𝑏))))
161160adantl 469 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑎𝑏 → (𝑎) ⊆ (𝑏))))
1621613imp 1130 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑎𝑏) → (𝑎) ⊆ (𝑏))
163162orcd 891 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑎𝑏) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
1641633exp 1141 . . . . . . . . . . . . . . . . . . . . . . . . 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 6408 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎 = 𝑏 → (𝑎) = (𝑏))
167 eqimss 3854 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑎) = (𝑏) → (𝑎) ⊆ (𝑏))
168167orcd 891 . . . . . . . . . . . . . . . . . . . . . . . . . 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 6408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑚 = 𝑎 → (𝑚) = (𝑎))
172171sseq2d 3830 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑚 = 𝑎 → ((𝑗) ⊆ (𝑚) ↔ (𝑗) ⊆ (𝑎)))
173172raleqbi1dv 3335 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑚 = 𝑎 → (∀𝑗𝑚 (𝑗) ⊆ (𝑚) ↔ ∀𝑗𝑎 (𝑗) ⊆ (𝑎)))
174173rspcv 3498 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑎 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → ∀𝑗𝑎 (𝑗) ⊆ (𝑎)))
175 fveq2 6408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑗 = 𝑏 → (𝑗) = (𝑏))
176175sseq1d 3829 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑗 = 𝑏 → ((𝑗) ⊆ (𝑎) ↔ (𝑏) ⊆ (𝑎)))
177176rspccv 3499 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (∀𝑗𝑎 (𝑗) ⊆ (𝑎) → (𝑏𝑎 → (𝑏) ⊆ (𝑎)))
178174, 177syl6 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎 ∈ ω → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑏𝑎 → (𝑏) ⊆ (𝑎))))
179178adantr 468 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ ω ∧ 𝑏 ∈ ω) → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑏𝑎 → (𝑏) ⊆ (𝑎))))
1801793imp 1130 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑏𝑎) → (𝑏) ⊆ (𝑎))
181180olcd 892 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑎 ∈ ω ∧ 𝑏 ∈ ω) ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) ∧ 𝑏𝑎) → ((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)))
1821813exp 1141 . . . . . . . . . . . . . . . . . . . . . . . . 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 1545 . . . . . . . . . . . . . . . . . . . . . . 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 3825 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → ((𝑎) ⊆ (𝑏) ↔ 𝑢𝑣))
188 sseq12 3825 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑏) = 𝑣 ∧ (𝑎) = 𝑢) → ((𝑏) ⊆ (𝑎) ↔ 𝑣𝑢))
189188ancoms 448 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → ((𝑏) ⊆ (𝑎) ↔ 𝑣𝑢))
190187, 189orbi12d 933 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑎) = 𝑢 ∧ (𝑏) = 𝑣) → (((𝑎) ⊆ (𝑏) ∨ (𝑏) ⊆ (𝑎)) ↔ (𝑢𝑣𝑣𝑢)))
191190biimpcd 240 . . . . . . . . . . . . . . . . . . . . 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 419 . . . . . . . . . . . . . . . . . 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 3215 . . . . . . . . . . . . . . . 16 (∃𝑎 ∈ ω (𝑎) = 𝑢 → (𝑏 ∈ ω → ((𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢)))))
197196rexlimdv 3218 . . . . . . . . . . . . . . 15 (∃𝑎 ∈ ω (𝑎) = 𝑢 → (∃𝑏 ∈ ω (𝑏) = 𝑣 → (∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚) → (𝑢𝑣𝑣𝑢))))
198148, 197syl6bi 244 . . . . . . . . . . . . . 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 231 . . . . . . . . . . . 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 395 . . . . . . . . . 10 (( Fn ω ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → (𝑣 ∈ ran → (𝑢𝑣𝑣𝑢))))
203202ralrimdv 3156 . . . . . . . . 9 (( Fn ω ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
204146, 203sylan 571 . . . . . . . 8 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
205145, 204jcad 504 . . . . . . 7 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → (𝑢 ∈ ran → (Fun 𝑢 ∧ ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢))))
206205ralrimiv 3153 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑚 ∈ ω ∀𝑗𝑚 (𝑗) ⊆ (𝑚)) → ∀𝑢 ∈ ran (Fun 𝑢 ∧ ∀𝑣 ∈ ran (𝑢𝑣𝑣𝑢)))
207 fununi 6175 . . . . . 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 581 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → Fun ran )
210 vex 3394 . . . . . . . . 9 𝑚 ∈ V
211210eldm2 5523 . . . . . . . 8 (𝑚 ∈ dom ran ↔ ∃𝑢𝑚, 𝑢⟩ ∈ ran )
212 eluni2 4634 . . . . . . . . . 10 (⟨𝑚, 𝑢⟩ ∈ ran ↔ ∃𝑣 ∈ ran 𝑚, 𝑢⟩ ∈ 𝑣)
213210, 141opeldm 5529 . . . . . . . . . . . . . . 15 (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ dom 𝑣)
214213a1i 11 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ dom 𝑣))
215133, 44syl6ss 3810 . . . . . . . . . . . . . . 15 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)})
216 ssel 3792 . . . . . . . . . . . . . . . 16 (ran ⊆ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} → (𝑣 ∈ ran 𝑣 ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}))
217 vex 3394 . . . . . . . . . . . . . . . . . 18 𝑣 ∈ V
218 dmeq 5525 . . . . . . . . . . . . . . . . . . . 20 (𝑠 = 𝑣 → dom 𝑠 = dom 𝑣)
219218eleq2d 2871 . . . . . . . . . . . . . . . . . . 19 (𝑠 = 𝑣 → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom 𝑣))
220218eleq1d 2870 . . . . . . . . . . . . . . . . . . 19 (𝑠 = 𝑣 → (dom 𝑠 ∈ ω ↔ dom 𝑣 ∈ ω))
221219, 220anbi12d 618 . . . . . . . . . . . . . . . . . 18 (𝑠 = 𝑣 → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω)))
222217, 221elab 3545 . . . . . . . . . . . . . . . . 17 (𝑣 ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω))
223222simprbi 486 . . . . . . . . . . . . . . . 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 598 . . . . . . . . . . . . 13 (:ω⟶𝑆 → ((⟨𝑚, 𝑢⟩ ∈ 𝑣𝑣 ∈ ran ) → (𝑚 ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω)))
227 elnn 7305 . . . . . . . . . . . . 13 ((𝑚 ∈ dom 𝑣 ∧ dom 𝑣 ∈ ω) → 𝑚 ∈ ω)
228226, 227syl6 35 . . . . . . . . . . . 12 (:ω⟶𝑆 → ((⟨𝑚, 𝑢⟩ ∈ 𝑣𝑣 ∈ ran ) → 𝑚 ∈ ω))
229228expcomd 404 . . . . . . . . . . 11 (:ω⟶𝑆 → (𝑣 ∈ ran → (⟨𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ ω)))
230229rexlimdv 3218 . . . . . . . . . 10 (:ω⟶𝑆 → (∃𝑣 ∈ ran 𝑚, 𝑢⟩ ∈ 𝑣𝑚 ∈ ω))
231212, 230syl5bi 233 . . . . . . . . 9 (:ω⟶𝑆 → (⟨𝑚, 𝑢⟩ ∈ ran 𝑚 ∈ ω))
232231exlimdv 2024 . . . . . . . 8 (:ω⟶𝑆 → (∃𝑢𝑚, 𝑢⟩ ∈ ran 𝑚 ∈ ω))
233211, 232syl5bi 233 . . . . . . 7 (:ω⟶𝑆 → (𝑚 ∈ dom ran 𝑚 ∈ ω))
234233adantr 468 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom ran 𝑚 ∈ ω))
235 id 22 . . . . . . . . . . 11 (𝑚 ∈ ω → 𝑚 ∈ ω)
236 fnfvelrn 6578 . . . . . . . . . . 11 (( Fn ω ∧ 𝑚 ∈ ω) → (𝑚) ∈ ran )
237146, 235, 236syl2anr 586 . . . . . . . . . 10 ((𝑚 ∈ ω ∧ :ω⟶𝑆) → (𝑚) ∈ ran )
238237adantrr 699 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → (𝑚) ∈ ran )
239128simpld 484 . . . . . . . . 9 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 ∈ dom (𝑚))
240 dmeq 5525 . . . . . . . . . 10 (𝑢 = (𝑚) → dom 𝑢 = dom (𝑚))
241240eliuni 4718 . . . . . . . . 9 (((𝑚) ∈ ran 𝑚 ∈ dom (𝑚)) → 𝑚 𝑢 ∈ ran dom 𝑢)
242238, 239, 241syl2anc 575 . . . . . . . 8 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 𝑢 ∈ ran dom 𝑢)
243 dmuni 5535 . . . . . . . 8 dom ran = 𝑢 ∈ ran dom 𝑢
244242, 243syl6eleqr 2896 . . . . . . 7 ((𝑚 ∈ ω ∧ (:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))) → 𝑚 ∈ dom ran )
245244expcom 400 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → 𝑚 ∈ dom ran ))
246234, 245impbid 203 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ dom ran 𝑚 ∈ ω))
247246eqrdv 2804 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → dom ran = ω)
248 rnuni 5755 . . . . . 6 ran ran = 𝑠 ∈ ran ran 𝑠
249 frn 6262 . . . . . . . . . . . . . 14 (𝑠:suc 𝑛𝐴 → ran 𝑠𝐴)
2502493ad2ant1 1156 . . . . . . . . . . . . 13 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → ran 𝑠𝐴)
251250rexlimivw 3217 . . . . . . . . . . . 12 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → ran 𝑠𝐴)
252251ss2abi 3871 . . . . . . . . . . 11 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ ran 𝑠𝐴}
25328, 252eqsstri 3832 . . . . . . . . . 10 𝑆 ⊆ {𝑠 ∣ ran 𝑠𝐴}
254133, 253syl6ss 3810 . . . . . . . . 9 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ ran 𝑠𝐴})
255 ssel 3792 . . . . . . . . . 10 (ran ⊆ {𝑠 ∣ ran 𝑠𝐴} → (𝑠 ∈ ran 𝑠 ∈ {𝑠 ∣ ran 𝑠𝐴}))
256 abid 2794 . . . . . . . . . 10 (𝑠 ∈ {𝑠 ∣ ran 𝑠𝐴} ↔ ran 𝑠𝐴)
257255, 256syl6ib 242 . . . . . . . . 9 (ran ⊆ {𝑠 ∣ ran 𝑠𝐴} → (𝑠 ∈ ran → ran 𝑠𝐴))
258254, 257syl 17 . . . . . . . 8 (:ω⟶𝑆 → (𝑠 ∈ ran → ran 𝑠𝐴))
259258ralrimiv 3153 . . . . . . 7 (:ω⟶𝑆 → ∀𝑠 ∈ ran ran 𝑠𝐴)
260 iunss 4753 . . . . . . 7 ( 𝑠 ∈ ran ran 𝑠𝐴 ↔ ∀𝑠 ∈ ran ran 𝑠𝐴)
261259, 260sylibr 225 . . . . . 6 (:ω⟶𝑆 𝑠 ∈ ran ran 𝑠𝐴)
262248, 261syl5eqss 3846 . . . . 5 (:ω⟶𝑆 → ran ran 𝐴)
263262adantr 468 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ran ran 𝐴)
264 df-fn 6104 . . . . 5 ( ran Fn ω ↔ (Fun ran ∧ dom ran = ω))
265 df-f 6105 . . . . . 6 ( ran :ω⟶𝐴 ↔ ( ran Fn ω ∧ ran ran 𝐴))
266265biimpri 219 . . . . 5 (( ran Fn ω ∧ ran ran 𝐴) → ran :ω⟶𝐴)
267264, 266sylanbr 573 . . . 4 (((Fun ran ∧ dom ran = ω) ∧ ran ran 𝐴) → ran :ω⟶𝐴)
268209, 247, 263, 267syl21anc 857 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ran :ω⟶𝐴)
269 fnfvelrn 6578 . . . . . . . 8 (( Fn ω ∧ ∅ ∈ ω) → (‘∅) ∈ ran )
270146, 25, 269sylancl 576 . . . . . . 7 (:ω⟶𝑆 → (‘∅) ∈ ran )
271270adantr 468 . . . . . 6 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘∅) ∈ ran )
272 elssuni 4661 . . . . . 6 ((‘∅) ∈ ran → (‘∅) ⊆ ran )
273271, 272syl 17 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (‘∅) ⊆ ran )
27454adantr 468 . . . . 5 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∅ ∈ dom (‘∅))
275 funssfv 6429 . . . . 5 ((Fun ran ∧ (‘∅) ⊆ ran ∧ ∅ ∈ dom (‘∅)) → ( ran ‘∅) = ((‘∅)‘∅))
276209, 273, 274, 275syl3anc 1483 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ( ran ‘∅) = ((‘∅)‘∅))
277 simp2 1160 . . . . . . . . . . 11 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑠‘∅) = 𝐶)
278277rexlimivw 3217 . . . . . . . . . 10 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑠‘∅) = 𝐶)
279278ss2abi 3871 . . . . . . . . 9 {𝑠 ∣ ∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))} ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶}
28028, 279eqsstri 3832 . . . . . . . 8 𝑆 ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶}
281133, 280syl6ss 3810 . . . . . . 7 (:ω⟶𝑆 → ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶})
282 ssel 3792 . . . . . . . 8 (ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶} → ((‘∅) ∈ ran → (‘∅) ∈ {𝑠 ∣ (𝑠‘∅) = 𝐶}))
283 fveq1 6407 . . . . . . . . . 10 (𝑠 = (‘∅) → (𝑠‘∅) = ((‘∅)‘∅))
284283eqeq1d 2808 . . . . . . . . 9 (𝑠 = (‘∅) → ((𝑠‘∅) = 𝐶 ↔ ((‘∅)‘∅) = 𝐶))
28546, 284elab 3545 . . . . . . . 8 ((‘∅) ∈ {𝑠 ∣ (𝑠‘∅) = 𝐶} ↔ ((‘∅)‘∅) = 𝐶)
286282, 285syl6ib 242 . . . . . . 7 (ran ⊆ {𝑠 ∣ (𝑠‘∅) = 𝐶} → ((‘∅) ∈ ran → ((‘∅)‘∅) = 𝐶))
287281, 286syl 17 . . . . . 6 (:ω⟶𝑆 → ((‘∅) ∈ ran → ((‘∅)‘∅) = 𝐶))
288287adantr 468 . . . . 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 2840 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ( ran ‘∅) = 𝐶)
291 nfv 2005 . . . . 5 𝑘 :ω⟶𝑆
292 nfra1 3129 . . . . 5 𝑘𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))
293291, 292nfan 1990 . . . 4 𝑘(:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘)))
294133ad2antrr 708 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ran 𝑆)
295 peano2 7316 . . . . . . . . 9 (𝑘 ∈ ω → suc 𝑘 ∈ ω)
296 fnfvelrn 6578 . . . . . . . . 9 (( Fn ω ∧ suc 𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
297146, 295, 296syl2an 585 . . . . . . . 8 ((:ω⟶𝑆𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
298297adantlr 697 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (‘suc 𝑘) ∈ ran )
299239expcom 400 . . . . . . . . 9 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑚 ∈ ω → 𝑚 ∈ dom (𝑚)))
300299ralrimiv 3153 . . . . . . . 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 6408 . . . . . . . . . . . 12 (𝑚 = suc 𝑘 → (𝑚) = (‘suc 𝑘))
303302dmeqd 5527 . . . . . . . . . . 11 (𝑚 = suc 𝑘 → dom (𝑚) = dom (‘suc 𝑘))
304301, 303eleq12d 2879 . . . . . . . . . 10 (𝑚 = suc 𝑘 → (𝑚 ∈ dom (𝑚) ↔ suc 𝑘 ∈ dom (‘suc 𝑘)))
305304rspcv 3498 . . . . . . . . 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 498 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → suc 𝑘 ∈ dom (‘suc 𝑘))
308 eleq2 2874 . . . . . . . . . . . . . . . . . . . . 21 (dom 𝑠 = suc 𝑛 → (suc 𝑘 ∈ dom 𝑠 ↔ suc 𝑘 ∈ suc 𝑛))
309308biimpa 464 . . . . . . . . . . . . . . . . . . . 20 ((dom 𝑠 = suc 𝑛 ∧ suc 𝑘 ∈ dom 𝑠) → suc 𝑘 ∈ suc 𝑛)
31029, 309sylan 571 . . . . . . . . . . . . . . . . . . 19 ((𝑠:suc 𝑛𝐴 ∧ suc 𝑘 ∈ dom 𝑠) → suc 𝑘 ∈ suc 𝑛)
311 ordsucelsuc 7252 . . . . . . . . . . . . . . . . . . . . . . 23 (Ord 𝑛 → (𝑘𝑛 ↔ suc 𝑘 ∈ suc 𝑛))
31230, 311syl 17 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 ∈ ω → (𝑘𝑛 ↔ suc 𝑘 ∈ suc 𝑛))
313312biimprd 239 . . . . . . . . . . . . . . . . . . . . 21 (𝑛 ∈ ω → (suc 𝑘 ∈ suc 𝑛𝑘𝑛))
314 rsp 3117 . . . . . . . . . . . . . . . . . . . . 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 399 . . . . . . . . . . . . . . . . 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 395 . . . . . . . . . . . . . . 15 ((𝑠:suc 𝑛𝐴 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
3213203adant2 1154 . . . . . . . . . . . . . 14 ((𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (𝑛 ∈ ω → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))))
322321impcom 396 . . . . . . . . . . . . 13 ((𝑛 ∈ ω ∧ (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))) → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))
323322rexlimiva 3216 . . . . . . . . . . . 12 (∃𝑛 ∈ ω (𝑠:suc 𝑛𝐴 ∧ (𝑠‘∅) = 𝐶 ∧ ∀𝑘𝑛 (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))) → (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘))))
324323ss2abi 3871 . . . . . . . . . . 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 3832 . . . . . . . . . 10 𝑆 ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}
326 sstr 3806 . . . . . . . . . 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 674 . . . . . . . . 9 (ran 𝑆 → ran ⊆ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))})
328327sseld 3797 . . . . . . . 8 (ran 𝑆 → ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ∈ {𝑠 ∣ (suc 𝑘 ∈ dom 𝑠 → (𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)))}))
329 fvex 6421 . . . . . . . . 9 (‘suc 𝑘) ∈ V
330 dmeq 5525 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → dom 𝑠 = dom (‘suc 𝑘))
331330eleq2d 2871 . . . . . . . . . 10 (𝑠 = (‘suc 𝑘) → (suc 𝑘 ∈ dom 𝑠 ↔ suc 𝑘 ∈ dom (‘suc 𝑘)))
332 fveq1 6407 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → (𝑠‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
333 fveq1 6407 . . . . . . . . . . . 12 (𝑠 = (‘suc 𝑘) → (𝑠𝑘) = ((‘suc 𝑘)‘𝑘))
334333fveq2d 6412 . . . . . . . . . . 11 (𝑠 = (‘suc 𝑘) → (𝐹‘(𝑠𝑘)) = (𝐹‘((‘suc 𝑘)‘𝑘)))
335332, 334eleq12d 2879 . . . . . . . . . 10 (𝑠 = (‘suc 𝑘) → ((𝑠‘suc 𝑘) ∈ (𝐹‘(𝑠𝑘)) ↔ ((‘suc 𝑘)‘suc 𝑘) ∈ (𝐹‘((‘suc 𝑘)‘𝑘))))
336331, 335imbi12d 335 . . . . . . . . 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 3545 . . . . . . . 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, 337syl6ib 242 . . . . . . 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 468 . . . . . . . 8 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → Fun ran )
341 elssuni 4661 . . . . . . . . . 10 ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ⊆ ran )
342297, 341syl 17 . . . . . . . . 9 ((:ω⟶𝑆𝑘 ∈ ω) → (‘suc 𝑘) ⊆ ran )
343342adantlr 697 . . . . . . . 8 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → (‘suc 𝑘) ⊆ ran )
344 funssfv 6429 . . . . . . . 8 ((Fun ran ∧ (‘suc 𝑘) ⊆ ran ∧ suc 𝑘 ∈ dom (‘suc 𝑘)) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
345340, 343, 307, 344syl3anc 1483 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
346215sseld 3797 . . . . . . . . . . . . . . 15 (:ω⟶𝑆 → ((‘suc 𝑘) ∈ ran → (‘suc 𝑘) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)}))
347330eleq2d 2871 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘suc 𝑘) → (∅ ∈ dom 𝑠 ↔ ∅ ∈ dom (‘suc 𝑘)))
348330eleq1d 2870 . . . . . . . . . . . . . . . . 17 (𝑠 = (‘suc 𝑘) → (dom 𝑠 ∈ ω ↔ dom (‘suc 𝑘) ∈ ω))
349347, 348anbi12d 618 . . . . . . . . . . . . . . . 16 (𝑠 = (‘suc 𝑘) → ((∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω) ↔ (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω)))
350329, 349elab 3545 . . . . . . . . . . . . . . 15 ((‘suc 𝑘) ∈ {𝑠 ∣ (∅ ∈ dom 𝑠 ∧ dom 𝑠 ∈ ω)} ↔ (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω))
351346, 350syl6ib 242 . . . . . . . . . . . . . 14 (:ω⟶𝑆 → ((‘suc 𝑘) ∈ ran → (∅ ∈ dom (‘suc 𝑘) ∧ dom (‘suc 𝑘) ∈ ω)))
352351adantr 468 . . . . . . . . . . . . 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 485 . . . . . . . . . . 11 ((:ω⟶𝑆𝑘 ∈ ω) → dom (‘suc 𝑘) ∈ ω)
355 nnord 7303 . . . . . . . . . . 11 (dom (‘suc 𝑘) ∈ ω → Ord dom (‘suc 𝑘))
356 ordtr 5950 . . . . . . . . . . 11 (Ord dom (‘suc 𝑘) → Tr dom (‘suc 𝑘))
357 trsuc 6023 . . . . . . . . . . . 12 ((Tr dom (‘suc 𝑘) ∧ suc 𝑘 ∈ dom (‘suc 𝑘)) → 𝑘 ∈ dom (‘suc 𝑘))
358357ex 399 . . . . . . . . . . 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 697 . . . . . . . . 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 6429 . . . . . . . 8 ((Fun ran ∧ (‘suc 𝑘) ⊆ ran 𝑘 ∈ dom (‘suc 𝑘)) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
363340, 343, 361, 362syl3anc 1483 . . . . . . 7 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
364 simpl 470 . . . . . . . 8 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → ( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘))
365 simpr 473 . . . . . . . . 9 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → ( ran 𝑘) = ((‘suc 𝑘)‘𝑘))
366365fveq2d 6412 . . . . . . . 8 ((( ran ‘suc 𝑘) = ((‘suc 𝑘)‘suc 𝑘) ∧ ( ran 𝑘) = ((‘suc 𝑘)‘𝑘)) → (𝐹‘( ran 𝑘)) = (𝐹‘((‘suc 𝑘)‘𝑘)))
367364, 366eleq12d 2879 . . . . . . 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 575 . . . . . 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 248 . . . . 5 (((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) ∧ 𝑘 ∈ ω) → ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)))
370369ex 399 . . . 4 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → (𝑘 ∈ ω → ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
371293, 370ralrimi 3145 . . 3 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘)))
372 vex 3394 . . . . . 6 ∈ V
373372rnex 7330 . . . . 5 ran ∈ V
374373uniex 7183 . . . 4 ran ∈ V
375 feq1 6237 . . . . 5 (𝑔 = ran → (𝑔:ω⟶𝐴 ran :ω⟶𝐴))
376 fveq1 6407 . . . . . 6 (𝑔 = ran → (𝑔‘∅) = ( ran ‘∅))
377376eqeq1d 2808 . . . . 5 (𝑔 = ran → ((𝑔‘∅) = 𝐶 ↔ ( ran ‘∅) = 𝐶))
378 fveq1 6407 . . . . . . 7 (𝑔 = ran → (𝑔‘suc 𝑘) = ( ran ‘suc 𝑘))
379 fveq1 6407 . . . . . . . 8 (𝑔 = ran → (𝑔𝑘) = ( ran 𝑘))
380379fveq2d 6412 . . . . . . 7 (𝑔 = ran → (𝐹‘(𝑔𝑘)) = (𝐹‘( ran 𝑘)))
381378, 380eleq12d 2879 . . . . . 6 (𝑔 = ran → ((𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘)) ↔ ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
382381ralbidv 3174 . . . . 5 (𝑔 = ran → (∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘)) ↔ ∀𝑘 ∈ ω ( ran ‘suc 𝑘) ∈ (𝐹‘( ran 𝑘))))
383375, 377, 3823anbi123d 1553 . . . 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 3493 . . 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 1483 . 2 ((:ω⟶𝑆 ∧ ∀𝑘 ∈ ω (‘suc 𝑘) ∈ (𝐺‘(𝑘))) → ∃𝑔(𝑔:ω⟶𝐴 ∧ (𝑔‘∅) = 𝐶 ∧ ∀𝑘 ∈ ω (𝑔‘suc 𝑘) ∈ (𝐹‘(𝑔𝑘))))
386385exlimiv 2021 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 197  wa 384  wo 865  w3o 1099  w3a 1100   = wceq 1637  wex 1859  wcel 2156  {cab 2792  wral 3096  wrex 3097  {crab 3100  Vcvv 3391  wss 3769  c0 4116  cop 4376   cuni 4630   ciun 4712  cmpt 4923  Tr wtr 4946  dom cdm 5311  ran crn 5312  cres 5313  Ord word 5935  suc csuc 5938  Fun wfun 6095   Fn wfn 6096  wf 6097  cfv 6101  ωcom 7295
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877  ax-4 1894  ax-5 2001  ax-6 2068  ax-7 2104  ax-8 2158  ax-9 2165  ax-10 2185  ax-11 2201  ax-12 2214  ax-13 2420  ax-ext 2784  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5096  ax-un 7179  ax-dc 9553
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 866  df-3or 1101  df-3an 1102  df-tru 1641  df-ex 1860  df-nf 1864  df-sb 2061  df-eu 2634  df-mo 2635  df-clab 2793  df-cleq 2799  df-clel 2802  df-nfc 2937  df-ne 2979  df-ral 3101  df-rex 3102  df-rab 3105  df-v 3393  df-sbc 3634  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4117  df-if 4280  df-pw 4353  df-sn 4371  df-pr 4373  df-tp 4375  df-op 4377  df-uni 4631  df-iun 4714  df-br 4845  df-opab 4907  df-mpt 4924  df-tr 4947  df-id 5219  df-eprel 5224  df-po 5232  df-so 5233  df-fr 5270  df-we 5272  df-xp 5317  df-rel 5318  df-cnv 5319  df-co 5320  df-dm 5321  df-rn 5322  df-res 5323  df-ord 5939  df-on 5940  df-lim 5941  df-suc 5942  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-fv 6109  df-om 7296  df-1o 7796
This theorem is referenced by:  axdc3lem4  9560
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