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Theorem ptcmplem3 24019
Description: Lemma for ptcmp 24023. (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 5278 . . . 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 24018 . . . 4 (𝜑 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝐹𝑘) ∈ dom card)
12 eldifi 4071 . . . . . . . 8 (𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) → 𝑦 (𝐹𝑘))
13123ad2ant3 1136 . . . . . . 7 ((𝜑𝑦 ∈ V ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 (𝐹𝑘))
1413rabssdv 4014 . . . . . 6 (𝜑 → {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ (𝐹𝑘))
1514ralrimivw 3133 . . . . 5 (𝜑 → ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ⊆ (𝐹𝑘))
16 ss2iun 4952 . . . . 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 9961 . . . 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 585 . . 3 (𝜑 𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} {𝑦 ∈ V ∣ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)} ∈ dom card)
20 elrabi 3630 . . . . 5 (𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} → 𝑘𝐴)
2110adantr 480 . . . . . . . 8 ((𝜑𝑘𝐴) → ¬ ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
22 ssdif0 4306 . . . . . . . . 9 ( (𝐹𝑘) ⊆ 𝐾 ↔ ( (𝐹𝑘) ∖ 𝐾) = ∅)
236ffvelcdmda 7036 . . . . . . . . . . . . 13 ((𝜑𝑘𝐴) → (𝐹𝑘) ∈ Comp)
2423adantr 480 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) ∈ Comp)
25 ptcmplem3.8 . . . . . . . . . . . . . 14 𝐾 = {𝑢 ∈ (𝐹𝑘) ∣ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) ∈ 𝑈}
2625ssrab3 4022 . . . . . . . . . . . . 13 𝐾 ⊆ (𝐹𝑘)
2726a1i 11 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → 𝐾 ⊆ (𝐹𝑘))
28 simpr 484 . . . . . . . . . . . . 13 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) ⊆ 𝐾)
29 uniss 4858 . . . . . . . . . . . . . 14 (𝐾 ⊆ (𝐹𝑘) → 𝐾 (𝐹𝑘))
3026, 29mp1i 13 . . . . . . . . . . . . 13 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → 𝐾 (𝐹𝑘))
3128, 30eqssd 3939 . . . . . . . . . . . 12 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → (𝐹𝑘) = 𝐾)
32 eqid 2736 . . . . . . . . . . . . 13 (𝐹𝑘) = (𝐹𝑘)
3332cmpcov 23354 . . . . . . . . . . . 12 (((𝐹𝑘) ∈ Comp ∧ 𝐾 ⊆ (𝐹𝑘) ∧ (𝐹𝑘) = 𝐾) → ∃𝑡 ∈ (𝒫 𝐾 ∩ Fin) (𝐹𝑘) = 𝑡)
3424, 27, 31, 33syl3anc 1374 . . . . . . . . . . 11 (((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) → ∃𝑡 ∈ (𝒫 𝐾 ∩ Fin) (𝐹𝑘) = 𝑡)
35 elfpw 9264 . . . . . . . . . . . . . . . . . . 19 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ↔ (𝑡𝐾𝑡 ∈ Fin))
3635simplbi 496 . . . . . . . . . . . . . . . . . 18 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) → 𝑡𝐾)
3736ad2antrl 729 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑡𝐾)
3837sselda 3921 . . . . . . . . . . . . . . . 16 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑥𝑡) → 𝑥𝐾)
39 imaeq2 6021 . . . . . . . . . . . . . . . . . . 19 (𝑢 = 𝑥 → ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
4039eleq1d 2821 . . . . . . . . . . . . . . . . . 18 (𝑢 = 𝑥 → (((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑢) ∈ 𝑈 ↔ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈))
4140, 25elrab2 3637 . . . . . . . . . . . . . . . . 17 (𝑥𝐾 ↔ (𝑥 ∈ (𝐹𝑘) ∧ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈))
4241simprbi 497 . . . . . . . . . . . . . . . 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 7067 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)):𝑡𝑈)
4544frnd 6676 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈)
4635simprbi 497 . . . . . . . . . . . . . . 15 (𝑡 ∈ (𝒫 𝐾 ∩ Fin) → 𝑡 ∈ Fin)
4746ad2antrl 729 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑡 ∈ Fin)
48 eqid 2736 . . . . . . . . . . . . . . . 16 (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
4948rnmpt 5912 . . . . . . . . . . . . . . 15 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)}
50 abrexfi 9262 . . . . . . . . . . . . . . 15 (𝑡 ∈ Fin → {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)} ∈ Fin)
5149, 50eqeltrid 2840 . . . . . . . . . . . . . 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 9264 . . . . . . . . . . . . 13 (ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin) ↔ (ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈 ∧ ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ Fin))
5445, 52, 53sylanbrc 584 . . . . . . . . . . . 12 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin))
55 fveq2 6840 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 = 𝑘 → (𝑓𝑛) = (𝑓𝑘))
56 fveq2 6840 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑛 = 𝑘 → (𝐹𝑛) = (𝐹𝑘))
5756unieqd 4863 . . . . . . . . . . . . . . . . . . . . . 22 (𝑛 = 𝑘 (𝐹𝑛) = (𝐹𝑘))
5855, 57eleq12d 2830 . . . . . . . . . . . . . . . . . . . . 21 (𝑛 = 𝑘 → ((𝑓𝑛) ∈ (𝐹𝑛) ↔ (𝑓𝑘) ∈ (𝐹𝑘)))
59 simpr 484 . . . . . . . . . . . . . . . . . . . . . . 23 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑓𝑋)
6059, 5eleqtrdi 2846 . . . . . . . . . . . . . . . . . . . . . 22 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑓X𝑛𝐴 (𝐹𝑛))
61 vex 3433 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑓 ∈ V
6261elixp 8852 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑓X𝑛𝐴 (𝐹𝑛) ↔ (𝑓 Fn 𝐴 ∧ ∀𝑛𝐴 (𝑓𝑛) ∈ (𝐹𝑛)))
6362simprbi 497 . . . . . . . . . . . . . . . . . . . . . 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 784 . . . . . . . . . . . . . . . . . . . . 21 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → 𝑘𝐴)
6658, 64, 65rspcdva 3565 . . . . . . . . . . . . . . . . . . . 20 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝑓𝑘) ∈ (𝐹𝑘))
67 simplrr 778 . . . . . . . . . . . . . . . . . . . 20 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝐹𝑘) = 𝑡)
6866, 67eleqtrd 2838 . . . . . . . . . . . . . . . . . . 19 (((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) → (𝑓𝑘) ∈ 𝑡)
69 eluni2 4854 . . . . . . . . . . . . . . . . . . 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 6839 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑤 = 𝑓 → (𝑤𝑘) = (𝑓𝑘))
7271eleq1d 2821 . . . . . . . . . . . . . . . . . . . . . 22 (𝑤 = 𝑓 → ((𝑤𝑘) ∈ 𝑥 ↔ (𝑓𝑘) ∈ 𝑥))
73 eqid 2736 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑤𝑋 ↦ (𝑤𝑘)) = (𝑤𝑋 ↦ (𝑤𝑘))
7473mptpreima 6202 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = {𝑤𝑋 ∣ (𝑤𝑘) ∈ 𝑥}
7572, 74elrab2 3637 . . . . . . . . . . . . . . . . . . . . 21 (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑋 ∧ (𝑓𝑘) ∈ 𝑥))
7675baib 535 . . . . . . . . . . . . . . . . . . . 20 (𝑓𝑋 → (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑘) ∈ 𝑥))
7776ad2antlr 728 . . . . . . . . . . . . . . . . . . 19 ((((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) ∧ 𝑓𝑋) ∧ 𝑥𝑡) → (𝑓 ∈ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ↔ (𝑓𝑘) ∈ 𝑥))
7877rexbidva 3159 . . . . . . . . . . . . . . . . . 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 4937 . . . . . . . . . . . . . . . . 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 3927 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))
8443ralrimiva 3129 . . . . . . . . . . . . . . . 16 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ∀𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) ∈ 𝑈)
85 dfiun2g 4972 . . . . . . . . . . . . . . . 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 4862 . . . . . . . . . . . . . . 15 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) = {𝑓 ∣ ∃𝑥𝑡 𝑓 = ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)}
8886, 87eqtr4di 2789 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑥𝑡 ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥) = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
8983, 88sseqtrd 3958 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
9045unissd 4860 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑈)
919ad3antrrr 731 . . . . . . . . . . . . . 14 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 = 𝑈)
9290, 91sseqtrrd 3959 . . . . . . . . . . . . 13 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ⊆ 𝑋)
9389, 92eqssd 3939 . . . . . . . . . . . 12 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → 𝑋 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
94 unieq 4861 . . . . . . . . . . . . 13 (𝑧 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) → 𝑧 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)))
9594rspceeqv 3587 . . . . . . . . . . . 12 ((ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥)) ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑋 = ran (𝑥𝑡 ↦ ((𝑤𝑋 ↦ (𝑤𝑘)) “ 𝑥))) → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
9654, 93, 95syl2anc 585 . . . . . . . . . . 11 ((((𝜑𝑘𝐴) ∧ (𝐹𝑘) ⊆ 𝐾) ∧ (𝑡 ∈ (𝒫 𝐾 ∩ Fin) ∧ (𝐹𝑘) = 𝑡)) → ∃𝑧 ∈ (𝒫 𝑈 ∩ Fin)𝑋 = 𝑧)
9734, 96rexlimddv 3144 . . . . . . . . . 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 4292 . . . . . . 7 (¬ ( (𝐹𝑘) ∖ 𝐾) = ∅ ↔ ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
102100, 101sylib 218 . . . . . 6 ((𝜑𝑘𝐴) → ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
103 rexv 3457 . . . . . 6 (∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
104102, 103sylibr 234 . . . . 5 ((𝜑𝑘𝐴) → ∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
10520, 104sylan2 594 . . . 4 ((𝜑𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}) → ∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
106105ralrimiva 3129 . . 3 (𝜑 → ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}∃𝑦 ∈ V 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
107 eleq1 2824 . . . 4 (𝑦 = (𝑔𝑘) → (𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
108107ac6num 10401 . . 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 1374 . 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 7179 . . 3 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∈ V)
112 fvex 6853 . . . . . . . 8 (𝐹𝑚) ∈ V
113112uniex 7695 . . . . . . 7 (𝐹𝑚) ∈ V
114113uniex 7695 . . . . . 6 (𝐹𝑚) ∈ V
115 fvex 6853 . . . . . 6 (𝑔𝑚) ∈ V
116114, 115ifex 4517 . . . . 5 if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) ∈ V
117116rgenw 3055 . . . 4 𝑚𝐴 if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) ∈ V
118 eqid 2736 . . . . 5 (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))
119118fnmpt 6638 . . . 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 5095 . . . . . . 7 (𝑛 = 𝑘 → ( (𝐹𝑛) ≈ 1o (𝐹𝑘) ≈ 1o))
122121notbid 318 . . . . . 6 (𝑛 = 𝑘 → (¬ (𝐹𝑛) ≈ 1o ↔ ¬ (𝐹𝑘) ≈ 1o))
123122ralrab 3640 . . . . 5 (∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∀𝑘𝐴 (𝐹𝑘) ≈ 1o → (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
124 iftrue 4472 . . . . . . . . . . 11 ( (𝐹𝑘) ≈ 1o → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝐹𝑘))
125124ad2antll 730 . . . . . . . . . 10 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝐹𝑘))
126102adantrr 718 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → ∃𝑦 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾))
12712adantl 481 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 (𝐹𝑘))
128 simplrr 778 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) ≈ 1o)
129 en1b 8972 . . . . . . . . . . . . . . . 16 ( (𝐹𝑘) ≈ 1o (𝐹𝑘) = { (𝐹𝑘)})
130128, 129sylib 218 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) = { (𝐹𝑘)})
131127, 130eleqtrd 2838 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → 𝑦 ∈ { (𝐹𝑘)})
132 elsni 4584 . . . . . . . . . . . . . 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 2837 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) ∧ 𝑦 ∈ ( (𝐹𝑘) ∖ 𝐾)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
136126, 135exlimddv 1937 . . . . . . . . . . 11 ((𝜑 ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
137136adantlr 716 . . . . . . . . . 10 (((𝜑𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V) ∧ (𝑘𝐴 (𝐹𝑘) ≈ 1o)) → (𝐹𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))
138125, 137eqeltrd 2836 . . . . . . . . 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 4475 . . . . . . . . 9 (𝐹𝑘) ≈ 1o → if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) = (𝑔𝑘))
143142eleq1d 2821 . . . . . . . 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 3149 . . . . 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 6589 . . . . . 6 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (𝑓 Fn 𝐴 ↔ (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) Fn 𝐴))
150 fveq1 6839 . . . . . . . . 9 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (𝑓𝑘) = ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))‘𝑘))
151 fveq2 6840 . . . . . . . . . . . . 13 (𝑚 = 𝑘 → (𝐹𝑚) = (𝐹𝑘))
152151unieqd 4863 . . . . . . . . . . . 12 (𝑚 = 𝑘 (𝐹𝑚) = (𝐹𝑘))
153152breq1d 5095 . . . . . . . . . . 11 (𝑚 = 𝑘 → ( (𝐹𝑚) ≈ 1o (𝐹𝑘) ≈ 1o))
154152unieqd 4863 . . . . . . . . . . 11 (𝑚 = 𝑘 (𝐹𝑚) = (𝐹𝑘))
155 fveq2 6840 . . . . . . . . . . 11 (𝑚 = 𝑘 → (𝑔𝑚) = (𝑔𝑘))
156153, 154, 155ifbieq12d 4495 . . . . . . . . . 10 (𝑚 = 𝑘 → if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
157 fvex 6853 . . . . . . . . . . . . 13 (𝐹𝑘) ∈ V
158157uniex 7695 . . . . . . . . . . . 12 (𝐹𝑘) ∈ V
159158uniex 7695 . . . . . . . . . . 11 (𝐹𝑘) ∈ V
160 fvex 6853 . . . . . . . . . . 11 (𝑔𝑘) ∈ V
161159, 160ifex 4517 . . . . . . . . . 10 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ V
162156, 118, 161fvmpt 6947 . . . . . . . . 9 (𝑘𝐴 → ((𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚)))‘𝑘) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
163150, 162sylan9eq 2791 . . . . . . . 8 ((𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∧ 𝑘𝐴) → (𝑓𝑘) = if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)))
164163eleq1d 2821 . . . . . . 7 ((𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) ∧ 𝑘𝐴) → ((𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
165164ralbidva 3158 . . . . . 6 (𝑓 = (𝑚𝐴 ↦ if( (𝐹𝑚) ≈ 1o, (𝐹𝑚), (𝑔𝑚))) → (∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾) ↔ ∀𝑘𝐴 if( (𝐹𝑘) ≈ 1o, (𝐹𝑘), (𝑔𝑘)) ∈ ( (𝐹𝑘) ∖ 𝐾)))
166149, 165anbi12d 633 . . . . 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 3539 . . . 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 1117 . . 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 1374 . 2 ((𝜑 ∧ (𝑔:{𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o}⟶V ∧ ∀𝑘 ∈ {𝑛𝐴 ∣ ¬ (𝐹𝑛) ≈ 1o} (𝑔𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾))) → ∃𝑓(𝑓 Fn 𝐴 ∧ ∀𝑘𝐴 (𝑓𝑘) ∈ ( (𝐹𝑘) ∖ 𝐾)))
170109, 169exlimddv 1937 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 1542  wex 1781  wcel 2114  {cab 2714  wral 3051  wrex 3061  {crab 3389  Vcvv 3429  cdif 3886  cin 3888  wss 3889  c0 4273  ifcif 4466  𝒫 cpw 4541  {csn 4567   cuni 4850   ciun 4933   class class class wbr 5085  cmpt 5166  ccnv 5630  dom cdm 5631  ran crn 5632  cima 5634   Fn wfn 6493  wf 6494  cfv 6498  cmpo 7369  1oc1o 8398  Xcixp 8845  cen 8890  Fincfn 8893  cardccrd 9859  Compccmp 23351  UFLcufl 23865
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-rmo 3342  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-pss 3909  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-int 4890  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-tr 5193  df-id 5526  df-eprel 5531  df-po 5539  df-so 5540  df-fr 5584  df-se 5585  df-we 5586  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-pred 6265  df-ord 6326  df-on 6327  df-lim 6328  df-suc 6329  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-isom 6507  df-riota 7324  df-ov 7370  df-oprab 7371  df-mpo 7372  df-om 7818  df-1st 7942  df-2nd 7943  df-frecs 8231  df-wrecs 8262  df-recs 8311  df-rdg 8349  df-1o 8405  df-oadd 8409  df-omul 8410  df-er 8643  df-map 8775  df-ixp 8846  df-en 8894  df-dom 8895  df-fin 8897  df-wdom 9480  df-card 9863  df-acn 9866  df-cmp 23352
This theorem is referenced by:  ptcmplem4  24020
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