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Theorem ptcmplem3 24083
Description: Lemma for ptcmp 24087. (Contributed by Mario Carneiro, 26-Aug-2015.)
Hypotheses
Ref Expression
ptcmp.1 𝑆 = (𝑘𝐴, 𝑢 ∈ (𝐹𝑘) ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢))
ptcmp.2 𝑋 = X𝑛𝐴 (𝐹𝑛)
ptcmp.3 (𝜑𝐴𝑉)
ptcmp.4 (𝜑𝐹:𝐴⟶Comp)
ptcmp.5 (𝜑𝑋 ∈ (UFL ∩ dom card))
ptcmplem2.5 (𝜑𝑈 ⊆ ran 𝑆)
ptcmplem2.6 (𝜑𝑋 = 𝑈)
ptcmplem2.7 (𝜑 → ¬ ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
ptcmplem3.8 𝐾 = {𝑢 ∈ (𝐹𝑘) ∣ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) ∈ 𝑈}
Assertion
Ref Expression
ptcmplem3 (𝜑 → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
Distinct variable groups:   𝑓,𝑘,𝑛,𝑢,𝑤,𝑧,𝐴   𝑓,𝐾,𝑢   𝑆,𝑘,𝑛,𝑢,𝑧   𝜑,𝑓,𝑘,𝑛,𝑢   𝑈,𝑘,𝑢,𝑧   𝑘,𝑉,𝑛,𝑢,𝑤,𝑧   𝑓,𝐹,𝑘,𝑛,𝑢,𝑤,𝑧   𝑓,𝑋,𝑘,𝑛,𝑢,𝑤,𝑧
Allowed substitution hints:   𝜑(𝑧,𝑤)   𝑆(𝑤,𝑓)   𝑈(𝑤,𝑓,𝑛)   𝐾(𝑧,𝑤,𝑘,𝑛)   𝑉(𝑓)

Proof of Theorem ptcmplem3
Dummy variables 𝑔 𝑚 𝑡 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ptcmp.3 . . . 4 (𝜑𝐴𝑉)
2 rabexg 5355 . . . 4 (𝐴𝑉 → {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} ∈ V)
31, 2syl 17 . . 3 (𝜑 → {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} ∈ V)
4 ptcmp.1 . . . . 5 𝑆 = (𝑘𝐴, 𝑢 ∈ (𝐹𝑘) ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢))
5 ptcmp.2 . . . . 5 𝑋 = X𝑛𝐴 (𝐹𝑛)
6 ptcmp.4 . . . . 5 (𝜑𝐹:𝐴⟶Comp)
7 ptcmp.5 . . . . 5 (𝜑𝑋 ∈ (UFL ∩ dom card))
8 ptcmplem2.5 . . . . 5 (𝜑𝑈 ⊆ ran 𝑆)
9 ptcmplem2.6 . . . . 5 (𝜑𝑋 = 𝑈)
10 ptcmplem2.7 . . . . 5 (𝜑 → ¬ ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
114, 5, 1, 6, 7, 8, 9, 10ptcmplem2 24082 . . . 4 (𝜑 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘) ∈ dom card)
12 eldifi 4154 . . . . . . . 8 (𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) → 𝑦 (𝐹𝑘))
13123ad2ant3 1135 . . . . . . 7 ((𝜑𝑦 ∈ V ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 (𝐹𝑘))
1413rabssdv 4098 . . . . . 6 (𝜑 → {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ (𝐹𝑘))
1514ralrimivw 3156 . . . . 5 (𝜑 → ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ (𝐹𝑘))
16 ss2iun 5033 . . . . 5 (∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ (𝐹𝑘) → 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘))
1715, 16syl 17 . . . 4 (𝜑 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘))
18 ssnum 10108 . . . 4 (( 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘) ∈ dom card ∧ 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘)) → 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ∈ dom card)
1911, 17, 18syl2anc 583 . . 3 (𝜑 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ∈ dom card)
20 elrabi 3703 . . . . 5 (𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} → 𝑘𝐴)
2110adantr 480 . . . . . . . 8 ((𝜑𝑘𝐴) → ¬ ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
22 ssdif0 4389 . . . . . . . . 9 ( (𝐹𝑘) ⊆ 𝐾 ↔ ( (𝐹𝑘) ∖ 𝐾) = ∅)
236ffvelcdmda 7118 . . . . . . . . . . . . 13 ((𝜑𝑘𝐴) → (𝐹𝑘) ∈ Comp)
2423adantr 480 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) ∈ Comp)
25 ptcmplem3.8 . . . . . . . . . . . . . 14 𝐾 = {𝑢 ∈ (𝐹𝑘) ∣ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) ∈ 𝑈}
2625ssrab3 4105 . . . . . . . . . . . . 13 𝐾 ⊆ (𝐹𝑘)
2726a1i 11 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → 𝐾 ⊆ (𝐹𝑘))
28 simpr 484 . . . . . . . . . . . . 13 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) ⊆ 𝐾)
29 uniss 4939 . . . . . . . . . . . . . 14 (𝐾 ⊆ (𝐹𝑘) → 𝐾 (𝐹𝑘))
3026, 29mp1i 13 . . . . . . . . . . . . 13 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → 𝐾 (𝐹𝑘))
3128, 30eqssd 4026 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) = 𝐾)
32 eqid 2740 . . . . . . . . . . . . 13 (𝐹𝑘) = (𝐹𝑘)
3332cmpcov 23418 . . . . . . . . . . . 12 (((𝐹𝑘) ∈ Comp ∧ 𝐾 ⊆ (𝐹𝑘) ∧ (𝐹𝑘) = 𝐾) → ∃𝑡 ∈ (𝒫 𝐾 ∩ Fin) (𝐹𝑘) = 𝑡)
3424, 27, 31, 33syl3anc 1371 . . . . . . . . . . 11 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → ∃𝑡 ∈ (𝒫 𝐾 ∩ Fin) (𝐹𝑘) = 𝑡)
35 elfpw 9424 . . . . . . . . . . . . . . . . . . 19 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ↔ (𝑡𝐾𝑡 ∈ Fin))
3635simplbi 497 . . . . . . . . . . . . . . . . . 18 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) → 𝑡𝐾)
3736ad2antrl 727 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑡𝐾)
3837sselda 4008 . . . . . . . . . . . . . . . 16 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑥𝑡) → 𝑥𝐾)
39 imaeq2 6085 . . . . . . . . . . . . . . . . . . 19 (𝑢 = 𝑥 → ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
4039eleq1d 2829 . . . . . . . . . . . . . . . . . 18 (𝑢 = 𝑥 → (((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) ∈ 𝑈 ↔ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈))
4140, 25elrab2 3711 . . . . . . . . . . . . . . . . 17 (𝑥𝐾 ↔ (𝑥 ∈ (𝐹𝑘) ∧ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈))
4241simprbi 496 . . . . . . . . . . . . . . . 16 (𝑥𝐾 → ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈)
4338, 42syl 17 . . . . . . . . . . . . . . 15 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑥𝑡) → ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈)
4443fmpttd 7149 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)):𝑡𝑈)
4544frnd 6755 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈)
4635simprbi 496 . . . . . . . . . . . . . . 15 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) → 𝑡 ∈ Fin)
4746ad2antrl 727 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑡 ∈ Fin)
48 eqid 2740 . . . . . . . . . . . . . . . 16 (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
4948rnmpt 5980 . . . . . . . . . . . . . . 15 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)}
50 abrexfi 9422 . . . . . . . . . . . . . . 15 (𝑡 ∈ Fin → {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)} ∈ Fin)
5149, 50eqeltrid 2848 . . . . . . . . . . . . . 14 (𝑡 ∈ Fin → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ Fin)
5247, 51syl 17 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ Fin)
53 elfpw 9424 . . . . . . . . . . . . 13 (ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin) ↔ (ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈 ∧ ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ Fin))
5445, 52, 53sylanbrc 582 . . . . . . . . . . . 12 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin))
55 fveq2 6920 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 = 𝑘 → (𝑓𝑛) = (𝑓𝑘))
56 fveq2 6920 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑛 = 𝑘 → (𝐹𝑛) = (𝐹𝑘))
5756unieqd 4944 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 = 𝑘 (𝐹𝑛) = (𝐹𝑘))
5855, 57eleq12d 2838 . . . . . . . . . . . . . . . . . . . . 21 (𝑛 = 𝑘 → ((𝑓𝑛) ∈ (𝐹𝑛) ↔ (𝑓𝑘) ∈ (𝐹𝑘)))
59 simpr 484 . . . . . . . . . . . . . . . . . . . . . . 23 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑓𝑋)
6059, 5eleqtrdi 2854 . . . . . . . . . . . . . . . . . . . . . 22 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑓X𝑛𝐴 (𝐹𝑛))
61 vex 3492 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑓 ∈ V
6261elixp 8962 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑓X𝑛𝐴 (𝐹𝑛) ↔ (𝑓 Fn 𝐴 ∧ ∀𝑛𝐴 (𝑓𝑛) ∈ (𝐹𝑛)))
6362simprbi 496 . . . . . . . . . . . . . . . . . . . . . 22 (𝑓X𝑛𝐴 (𝐹𝑛) → ∀𝑛𝐴 (𝑓𝑛) ∈ (𝐹𝑛))
6460, 63syl 17 . . . . . . . . . . . . . . . . . . . . 21 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → ∀𝑛𝐴 (𝑓𝑛) ∈ (𝐹𝑛))
65 simp-4r 783 . . . . . . . . . . . . . . . . . . . . 21 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑘𝐴)
6658, 64, 65rspcdva 3636 . . . . . . . . . . . . . . . . . . . 20 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝑓𝑘) ∈ (𝐹𝑘))
67 simplrr 777 . . . . . . . . . . . . . . . . . . . 20 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝐹𝑘) = 𝑡)
6866, 67eleqtrd 2846 . . . . . . . . . . . . . . . . . . 19 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝑓𝑘) ∈ 𝑡)
69 eluni2 4935 . . . . . . . . . . . . . . . . . . 19 ((𝑓𝑘) ∈ 𝑡 ↔ ∃𝑥𝑡 (𝑓𝑘) ∈ 𝑥)
7068, 69sylib 218 . . . . . . . . . . . . . . . . . 18 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → ∃𝑥𝑡 (𝑓𝑘) ∈ 𝑥)
71 fveq1 6919 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑤 = 𝑓 → (𝑤𝑘) = (𝑓𝑘))
7271eleq1d 2829 . . . . . . . . . . . . . . . . . . . . . 22 (𝑤 = 𝑓 → ((𝑤𝑘) ∈ 𝑥 ↔ (𝑓𝑘) ∈ 𝑥))
73 eqid 2740 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑤𝑋 ↦ (𝑤𝑘)) = (𝑤𝑋 ↦ (𝑤𝑘))
7473mptpreima 6269 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = {𝑤𝑋 ∣ (𝑤𝑘) ∈ 𝑥}
7572, 74elrab2 3711 . . . . . . . . . . . . . . . . . . . . 21 (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑋 ∧ (𝑓𝑘) ∈ 𝑥))
7675baib 535 . . . . . . . . . . . . . . . . . . . 20 (𝑓𝑋 → (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑘) ∈ 𝑥))
7776ad2antlr 726 . . . . . . . . . . . . . . . . . . 19 ((((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) ∧ 𝑥𝑡) → (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑘) ∈ 𝑥))
7877rexbidva 3183 . . . . . . . . . . . . . . . . . 18 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (∃𝑥𝑡 𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ ∃𝑥𝑡 (𝑓𝑘) ∈ 𝑥))
7970, 78mpbird 257 . . . . . . . . . . . . . . . . 17 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → ∃𝑥𝑡 𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
80 eliun 5019 . . . . . . . . . . . . . . . . 17 (𝑓 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ ∃𝑥𝑡 𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
8179, 80sylibr 234 . . . . . . . . . . . . . . . 16 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑓 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
8281ex 412 . . . . . . . . . . . . . . 15 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → (𝑓𝑋𝑓 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
8382ssrdv 4014 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
8443ralrimiva 3152 . . . . . . . . . . . . . . . 16 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ∀𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈)
85 dfiun2g 5053 . . . . . . . . . . . . . . . 16 (∀𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)})
8684, 85syl 17 . . . . . . . . . . . . . . 15 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)})
8749unieqi 4943 . . . . . . . . . . . . . . 15 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)}
8886, 87eqtr4di 2798 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
8983, 88sseqtrd 4049 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
9045unissd 4941 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈)
919ad3antrrr 729 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 = 𝑈)
9290, 91sseqtrrd 4050 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑋)
9389, 92eqssd 4026 . . . . . . . . . . . 12 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
94 unieq 4942 . . . . . . . . . . . . 13 (𝑧 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) → 𝑧 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
9594rspceeqv 3658 . . . . . . . . . . . 12 ((ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑋 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))) → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
9654, 93, 95syl2anc 583 . . . . . . . . . . 11 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
9734, 96rexlimddv 3167 . . . . . . . . . 10 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
9897ex 412 . . . . . . . . 9 ((𝜑𝑘𝐴) → ( (𝐹𝑘) ⊆ 𝐾 → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧))
9922, 98biimtrrid 243 . . . . . . . 8 ((𝜑𝑘𝐴) → (( (𝐹𝑘) ∖ 𝐾) = ∅ → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧))
10021, 99mtod 198 . . . . . . 7 ((𝜑𝑘𝐴) → ¬ ( (𝐹𝑘) ∖ 𝐾) = ∅)
101 neq0 4375 . . . . . . 7 (¬ ( (𝐹𝑘) ∖ 𝐾) = ∅ ↔ ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
102100, 101sylib 218 . . . . . 6 ((𝜑𝑘𝐴) → ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
103 rexv 3517 . . . . . 6 (∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
104102, 103sylibr 234 . . . . 5 ((𝜑𝑘𝐴) → ∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
10520, 104sylan2 592 . . . 4 ((𝜑𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}) → ∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
106105ralrimiva 3152 . . 3 (𝜑 → ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
107 eleq1 2832 . . . 4 (𝑦 = (𝑔𝑘) → (𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
108107ac6num 10548 . . 3 (({𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} ∈ V ∧ 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ∈ dom card ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → ∃𝑔(𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
1093, 19, 106, 108syl3anc 1371 . 2 (𝜑 → ∃𝑔(𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
1101adantr 480 . . . 4 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → 𝐴𝑉)
111110mptexd 7261 . . 3 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∈ V)
112 fvex 6933 . . . . . . . 8 (𝐹𝑚) ∈ V
113112uniex 7776 . . . . . . 7 (𝐹𝑚) ∈ V
114113uniex 7776 . . . . . 6 (𝐹𝑚) ∈ V
115 fvex 6933 . . . . . 6 (𝑔𝑚) ∈ V
116114, 115ifex 4598 . . . . 5 if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) ∈ V
117116rgenw 3071 . . . 4 𝑚𝐴 if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) ∈ V
118 eqid 2740 . . . . 5 (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))
119118fnmpt 6720 . . . 4 (∀𝑚𝐴 if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) ∈ V → (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴)
120117, 119mp1i 13 . . 3 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴)
12157breq1d 5176 . . . . . . 7 (𝑛 = 𝑘 → ( (𝐹𝑛) ≈ 1o (𝐹𝑘) ≈ 1o))
122121notbid 318 . . . . . 6 (𝑛 = 𝑘 → (¬ (𝐹𝑛) ≈ 1o ↔ ¬ (𝐹𝑘) ≈ 1o))
123122ralrab 3715 . . . . 5 (∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∀𝑘𝐴 (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
124 iftrue 4554 . . . . . . . . . . 11 ( (𝐹𝑘) ≈ 1o → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝐹𝑘))
125124ad2antll 728 . . . . . . . . . 10 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝐹𝑘))
126102adantrr 716 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
12712adantl 481 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 (𝐹𝑘))
128 simplrr 777 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) ≈ 1o)
129 en1b 9088 . . . . . . . . . . . . . . . 16 ( (𝐹𝑘) ≈ 1o (𝐹𝑘) = { (𝐹𝑘)})
130128, 129sylib 218 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) = { (𝐹𝑘)})
131127, 130eleqtrd 2846 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 ∈ { (𝐹𝑘)})
132 elsni 4665 . . . . . . . . . . . . . 14 (𝑦 ∈ { (𝐹𝑘)} → 𝑦 = (𝐹𝑘))
133131, 132syl 17 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 = (𝐹𝑘))
134 simpr 484 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
135133, 134eqeltrrd 2845 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
136126, 135exlimddv 1934 . . . . . . . . . . 11 ((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
137136adantlr 714 . . . . . . . . . 10 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
138125, 137eqeltrd 2844 . . . . . . . . 9 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾))
139138a1d 25 . . . . . . . 8 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → ((¬ (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
140139expr 456 . . . . . . 7 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ 𝑘𝐴) → ( (𝐹𝑘) ≈ 1o → ((¬ (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾))))
141 pm2.27 42 . . . . . . . 8 (𝐹𝑘) ≈ 1o → ((¬ (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
142 iffalse 4557 . . . . . . . . 9 (𝐹𝑘) ≈ 1o → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝑔𝑘))
143142eleq1d 2829 . . . . . . . 8 (𝐹𝑘) ≈ 1o → (if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
144141, 143sylibrd 259 . . . . . . 7 (𝐹𝑘) ≈ 1o → ((¬ (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
145140, 144pm2.61d1 180 . . . . . 6 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ 𝑘𝐴) → ((¬ (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
146145ralimdva 3173 . . . . 5 ((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) → (∀𝑘𝐴 (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) → ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
147123, 146biimtrid 242 . . . 4 ((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) → (∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) → ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
148147impr 454 . . 3 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾))
149 fneq1 6670 . . . . . 6 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (𝑓 Fn 𝐴 ↔ (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴))
150 fveq1 6919 . . . . . . . . 9 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (𝑓𝑘) = ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))‘𝑘))
151 fveq2 6920 . . . . . . . . . . . . 13 (𝑚 = 𝑘 → (𝐹𝑚) = (𝐹𝑘))
152151unieqd 4944 . . . . . . . . . . . 12 (𝑚 = 𝑘 (𝐹𝑚) = (𝐹𝑘))
153152breq1d 5176 . . . . . . . . . . 11 (𝑚 = 𝑘 → ( (𝐹𝑚) ≈ 1o (𝐹𝑘) ≈ 1o))
154152unieqd 4944 . . . . . . . . . . 11 (𝑚 = 𝑘 (𝐹𝑚) = (𝐹𝑘))
155 fveq2 6920 . . . . . . . . . . 11 (𝑚 = 𝑘 → (𝑔𝑚) = (𝑔𝑘))
156153, 154, 155ifbieq12d 4576 . . . . . . . . . 10 (𝑚 = 𝑘 → if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
157 fvex 6933 . . . . . . . . . . . . 13 (𝐹𝑘) ∈ V
158157uniex 7776 . . . . . . . . . . . 12 (𝐹𝑘) ∈ V
159158uniex 7776 . . . . . . . . . . 11 (𝐹𝑘) ∈ V
160 fvex 6933 . . . . . . . . . . 11 (𝑔𝑘) ∈ V
161159, 160ifex 4598 . . . . . . . . . 10 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ V
162156, 118, 161fvmpt 7029 . . . . . . . . 9 (𝑘𝐴 → ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))‘𝑘) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
163150, 162sylan9eq 2800 . . . . . . . 8 ((𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∧ 𝑘𝐴) → (𝑓𝑘) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
164163eleq1d 2829 . . . . . . 7 ((𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∧ 𝑘𝐴) → ((𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
165164ralbidva 3182 . . . . . 6 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
166149, 165anbi12d 631 . . . . 5 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → ((𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)) ↔ ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴 ∧ ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾))))
167166spcegv 3610 . . . 4 ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∈ V → (((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴 ∧ ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)) → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))))
1681673impib 1116 . . 3 (((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∈ V ∧ (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴 ∧ ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)) → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
169111, 120, 148, 168syl3anc 1371 . 2 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
170109, 169exlimddv 1934 1 (𝜑 → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 206  wa 395   = wceq 1537  wex 1777  wcel 2108  {cab 2717  wral 3067  wrex 3076  {crab 3443  Vcvv 3488  cdif 3973  cin 3975  wss 3976  c0 4352  ifcif 4548  𝒫 cpw 4622  {csn 4648   cuni 4931   ciun 5015   class class class wbr 5166  cmpt 5249  ccnv 5699  dom cdm 5700  ran crn 5701  cima 5703   Fn wfn 6568  wf 6569  cfv 6573  cmpo 7450  1oc1o 8515  Xcixp 8955  cen 9000  Fincfn 9003  cardccrd 10004  Compccmp 23415  UFLcufl 23929
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2158  ax-12 2178  ax-ext 2711  ax-rep 5303  ax-sep 5317  ax-nul 5324  ax-pow 5383  ax-pr 5447  ax-un 7770
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3or 1088  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-nf 1782  df-sb 2065  df-mo 2543  df-eu 2572  df-clab 2718  df-cleq 2732  df-clel 2819  df-nfc 2895  df-ne 2947  df-ral 3068  df-rex 3077  df-rmo 3388  df-reu 3389  df-rab 3444  df-v 3490  df-sbc 3805  df-csb 3922  df-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-pss 3996  df-nul 4353  df-if 4549  df-pw 4624  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-int 4971  df-iun 5017  df-br 5167  df-opab 5229  df-mpt 5250  df-tr 5284  df-id 5593  df-eprel 5599  df-po 5607  df-so 5608  df-fr 5652  df-se 5653  df-we 5654  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-rn 5711  df-res 5712  df-ima 5713  df-pred 6332  df-ord 6398  df-on 6399  df-lim 6400  df-suc 6401  df-iota 6525  df-fun 6575  df-fn 6576  df-f 6577  df-f1 6578  df-fo 6579  df-f1o 6580  df-fv 6581  df-isom 6582  df-riota 7404  df-ov 7451  df-oprab 7452  df-mpo 7453  df-om 7904  df-1st 8030  df-2nd 8031  df-frecs 8322  df-wrecs 8353  df-recs 8427  df-rdg 8466  df-1o 8522  df-oadd 8526  df-omul 8527  df-er 8763  df-map 8886  df-ixp 8956  df-en 9004  df-dom 9005  df-fin 9007  df-wdom 9634  df-card 10008  df-acn 10011  df-cmp 23416
This theorem is referenced by:  ptcmplem4  24084
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