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Theorem tsmsfbas 21836
Description: The collection of all sets of the form 𝐹(𝑧) = {𝑦𝑆𝑧𝑦}, which can be read as the set of all finite subsets of 𝐴 which contain 𝑧 as a subset, for each finite subset 𝑧 of 𝐴, form a filter base. (Contributed by Mario Carneiro, 2-Sep-2015.)
Hypotheses
Ref Expression
tsmsfbas.s 𝑆 = (𝒫 𝐴 ∩ Fin)
tsmsfbas.f 𝐹 = (𝑧𝑆 ↦ {𝑦𝑆𝑧𝑦})
tsmsfbas.l 𝐿 = ran 𝐹
tsmsfbas.a (𝜑𝐴𝑊)
Assertion
Ref Expression
tsmsfbas (𝜑𝐿 ∈ (fBas‘𝑆))
Distinct variable groups:   𝑧,𝐴   𝑦,𝑧,𝑆
Allowed substitution hints:   𝜑(𝑦,𝑧)   𝐴(𝑦)   𝐹(𝑦,𝑧)   𝐿(𝑦,𝑧)   𝑊(𝑦,𝑧)

Proof of Theorem tsmsfbas
Dummy variables 𝑢 𝑎 𝑣 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 tsmsfbas.a . 2 (𝜑𝐴𝑊)
2 elex 3203 . 2 (𝐴𝑊𝐴 ∈ V)
3 tsmsfbas.l . . 3 𝐿 = ran 𝐹
4 ssrab2 3671 . . . . . . 7 {𝑦𝑆𝑧𝑦} ⊆ 𝑆
5 tsmsfbas.s . . . . . . . . . 10 𝑆 = (𝒫 𝐴 ∩ Fin)
6 pwexg 4815 . . . . . . . . . . 11 (𝐴 ∈ V → 𝒫 𝐴 ∈ V)
7 inex1g 4766 . . . . . . . . . . 11 (𝒫 𝐴 ∈ V → (𝒫 𝐴 ∩ Fin) ∈ V)
86, 7syl 17 . . . . . . . . . 10 (𝐴 ∈ V → (𝒫 𝐴 ∩ Fin) ∈ V)
95, 8syl5eqel 2708 . . . . . . . . 9 (𝐴 ∈ V → 𝑆 ∈ V)
109adantr 481 . . . . . . . 8 ((𝐴 ∈ V ∧ 𝑧𝑆) → 𝑆 ∈ V)
11 elpw2g 4792 . . . . . . . 8 (𝑆 ∈ V → ({𝑦𝑆𝑧𝑦} ∈ 𝒫 𝑆 ↔ {𝑦𝑆𝑧𝑦} ⊆ 𝑆))
1210, 11syl 17 . . . . . . 7 ((𝐴 ∈ V ∧ 𝑧𝑆) → ({𝑦𝑆𝑧𝑦} ∈ 𝒫 𝑆 ↔ {𝑦𝑆𝑧𝑦} ⊆ 𝑆))
134, 12mpbiri 248 . . . . . 6 ((𝐴 ∈ V ∧ 𝑧𝑆) → {𝑦𝑆𝑧𝑦} ∈ 𝒫 𝑆)
14 tsmsfbas.f . . . . . 6 𝐹 = (𝑧𝑆 ↦ {𝑦𝑆𝑧𝑦})
1513, 14fmptd 6341 . . . . 5 (𝐴 ∈ V → 𝐹:𝑆⟶𝒫 𝑆)
16 frn 6012 . . . . 5 (𝐹:𝑆⟶𝒫 𝑆 → ran 𝐹 ⊆ 𝒫 𝑆)
1715, 16syl 17 . . . 4 (𝐴 ∈ V → ran 𝐹 ⊆ 𝒫 𝑆)
18 0ss 3949 . . . . . . . . . 10 ∅ ⊆ 𝐴
19 0fin 8133 . . . . . . . . . 10 ∅ ∈ Fin
20 elfpw 8213 . . . . . . . . . 10 (∅ ∈ (𝒫 𝐴 ∩ Fin) ↔ (∅ ⊆ 𝐴 ∧ ∅ ∈ Fin))
2118, 19, 20mpbir2an 954 . . . . . . . . 9 ∅ ∈ (𝒫 𝐴 ∩ Fin)
2221, 5eleqtrri 2703 . . . . . . . 8 ∅ ∈ 𝑆
23 0ss 3949 . . . . . . . . 9 ∅ ⊆ 𝑦
2423rgenw 2924 . . . . . . . 8 𝑦𝑆 ∅ ⊆ 𝑦
25 rabid2 3112 . . . . . . . . . 10 (𝑆 = {𝑦𝑆𝑧𝑦} ↔ ∀𝑦𝑆 𝑧𝑦)
26 sseq1 3610 . . . . . . . . . . 11 (𝑧 = ∅ → (𝑧𝑦 ↔ ∅ ⊆ 𝑦))
2726ralbidv 2985 . . . . . . . . . 10 (𝑧 = ∅ → (∀𝑦𝑆 𝑧𝑦 ↔ ∀𝑦𝑆 ∅ ⊆ 𝑦))
2825, 27syl5bb 272 . . . . . . . . 9 (𝑧 = ∅ → (𝑆 = {𝑦𝑆𝑧𝑦} ↔ ∀𝑦𝑆 ∅ ⊆ 𝑦))
2928rspcev 3300 . . . . . . . 8 ((∅ ∈ 𝑆 ∧ ∀𝑦𝑆 ∅ ⊆ 𝑦) → ∃𝑧𝑆 𝑆 = {𝑦𝑆𝑧𝑦})
3022, 24, 29mp2an 707 . . . . . . 7 𝑧𝑆 𝑆 = {𝑦𝑆𝑧𝑦}
3114elrnmpt 5336 . . . . . . . 8 (𝑆 ∈ V → (𝑆 ∈ ran 𝐹 ↔ ∃𝑧𝑆 𝑆 = {𝑦𝑆𝑧𝑦}))
329, 31syl 17 . . . . . . 7 (𝐴 ∈ V → (𝑆 ∈ ran 𝐹 ↔ ∃𝑧𝑆 𝑆 = {𝑦𝑆𝑧𝑦}))
3330, 32mpbiri 248 . . . . . 6 (𝐴 ∈ V → 𝑆 ∈ ran 𝐹)
34 ne0i 3902 . . . . . 6 (𝑆 ∈ ran 𝐹 → ran 𝐹 ≠ ∅)
3533, 34syl 17 . . . . 5 (𝐴 ∈ V → ran 𝐹 ≠ ∅)
36 simpr 477 . . . . . . . . . . . 12 ((𝐴 ∈ V ∧ 𝑧𝑆) → 𝑧𝑆)
37 ssid 3608 . . . . . . . . . . . 12 𝑧𝑧
38 sseq2 3611 . . . . . . . . . . . . 13 (𝑦 = 𝑧 → (𝑧𝑦𝑧𝑧))
3938rspcev 3300 . . . . . . . . . . . 12 ((𝑧𝑆𝑧𝑧) → ∃𝑦𝑆 𝑧𝑦)
4036, 37, 39sylancl 693 . . . . . . . . . . 11 ((𝐴 ∈ V ∧ 𝑧𝑆) → ∃𝑦𝑆 𝑧𝑦)
41 rabn0 3937 . . . . . . . . . . 11 ({𝑦𝑆𝑧𝑦} ≠ ∅ ↔ ∃𝑦𝑆 𝑧𝑦)
4240, 41sylibr 224 . . . . . . . . . 10 ((𝐴 ∈ V ∧ 𝑧𝑆) → {𝑦𝑆𝑧𝑦} ≠ ∅)
4342necomd 2851 . . . . . . . . 9 ((𝐴 ∈ V ∧ 𝑧𝑆) → ∅ ≠ {𝑦𝑆𝑧𝑦})
4443neneqd 2801 . . . . . . . 8 ((𝐴 ∈ V ∧ 𝑧𝑆) → ¬ ∅ = {𝑦𝑆𝑧𝑦})
4544nrexdv 3000 . . . . . . 7 (𝐴 ∈ V → ¬ ∃𝑧𝑆 ∅ = {𝑦𝑆𝑧𝑦})
46 0ex 4755 . . . . . . . 8 ∅ ∈ V
4714elrnmpt 5336 . . . . . . . 8 (∅ ∈ V → (∅ ∈ ran 𝐹 ↔ ∃𝑧𝑆 ∅ = {𝑦𝑆𝑧𝑦}))
4846, 47ax-mp 5 . . . . . . 7 (∅ ∈ ran 𝐹 ↔ ∃𝑧𝑆 ∅ = {𝑦𝑆𝑧𝑦})
4945, 48sylnibr 319 . . . . . 6 (𝐴 ∈ V → ¬ ∅ ∈ ran 𝐹)
50 df-nel 2900 . . . . . 6 (∅ ∉ ran 𝐹 ↔ ¬ ∅ ∈ ran 𝐹)
5149, 50sylibr 224 . . . . 5 (𝐴 ∈ V → ∅ ∉ ran 𝐹)
52 elfpw 8213 . . . . . . . . . . . . . . . . . 18 (𝑢 ∈ (𝒫 𝐴 ∩ Fin) ↔ (𝑢𝐴𝑢 ∈ Fin))
5352simplbi 476 . . . . . . . . . . . . . . . . 17 (𝑢 ∈ (𝒫 𝐴 ∩ Fin) → 𝑢𝐴)
5453, 5eleq2s 2722 . . . . . . . . . . . . . . . 16 (𝑢𝑆𝑢𝐴)
55 elfpw 8213 . . . . . . . . . . . . . . . . . 18 (𝑣 ∈ (𝒫 𝐴 ∩ Fin) ↔ (𝑣𝐴𝑣 ∈ Fin))
5655simplbi 476 . . . . . . . . . . . . . . . . 17 (𝑣 ∈ (𝒫 𝐴 ∩ Fin) → 𝑣𝐴)
5756, 5eleq2s 2722 . . . . . . . . . . . . . . . 16 (𝑣𝑆𝑣𝐴)
5854, 57anim12i 589 . . . . . . . . . . . . . . 15 ((𝑢𝑆𝑣𝑆) → (𝑢𝐴𝑣𝐴))
59 unss 3770 . . . . . . . . . . . . . . 15 ((𝑢𝐴𝑣𝐴) ↔ (𝑢𝑣) ⊆ 𝐴)
6058, 59sylib 208 . . . . . . . . . . . . . 14 ((𝑢𝑆𝑣𝑆) → (𝑢𝑣) ⊆ 𝐴)
6152simprbi 480 . . . . . . . . . . . . . . . 16 (𝑢 ∈ (𝒫 𝐴 ∩ Fin) → 𝑢 ∈ Fin)
6261, 5eleq2s 2722 . . . . . . . . . . . . . . 15 (𝑢𝑆𝑢 ∈ Fin)
6355simprbi 480 . . . . . . . . . . . . . . . 16 (𝑣 ∈ (𝒫 𝐴 ∩ Fin) → 𝑣 ∈ Fin)
6463, 5eleq2s 2722 . . . . . . . . . . . . . . 15 (𝑣𝑆𝑣 ∈ Fin)
65 unfi 8172 . . . . . . . . . . . . . . 15 ((𝑢 ∈ Fin ∧ 𝑣 ∈ Fin) → (𝑢𝑣) ∈ Fin)
6662, 64, 65syl2an 494 . . . . . . . . . . . . . 14 ((𝑢𝑆𝑣𝑆) → (𝑢𝑣) ∈ Fin)
67 elfpw 8213 . . . . . . . . . . . . . 14 ((𝑢𝑣) ∈ (𝒫 𝐴 ∩ Fin) ↔ ((𝑢𝑣) ⊆ 𝐴 ∧ (𝑢𝑣) ∈ Fin))
6860, 66, 67sylanbrc 697 . . . . . . . . . . . . 13 ((𝑢𝑆𝑣𝑆) → (𝑢𝑣) ∈ (𝒫 𝐴 ∩ Fin))
6968adantl 482 . . . . . . . . . . . 12 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → (𝑢𝑣) ∈ (𝒫 𝐴 ∩ Fin))
7069, 5syl6eleqr 2715 . . . . . . . . . . 11 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → (𝑢𝑣) ∈ 𝑆)
71 eqidd 2627 . . . . . . . . . . 11 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
72 sseq1 3610 . . . . . . . . . . . . . 14 (𝑎 = (𝑢𝑣) → (𝑎𝑦 ↔ (𝑢𝑣) ⊆ 𝑦))
7372rabbidv 3182 . . . . . . . . . . . . 13 (𝑎 = (𝑢𝑣) → {𝑦𝑆𝑎𝑦} = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
7473eqeq2d 2636 . . . . . . . . . . . 12 (𝑎 = (𝑢𝑣) → ({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆𝑎𝑦} ↔ {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}))
7574rspcev 3300 . . . . . . . . . . 11 (((𝑢𝑣) ∈ 𝑆 ∧ {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) → ∃𝑎𝑆 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆𝑎𝑦})
7670, 71, 75syl2anc 692 . . . . . . . . . 10 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → ∃𝑎𝑆 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆𝑎𝑦})
779adantr 481 . . . . . . . . . . . 12 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → 𝑆 ∈ V)
78 rabexg 4777 . . . . . . . . . . . 12 (𝑆 ∈ V → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ V)
7977, 78syl 17 . . . . . . . . . . 11 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ V)
80 sseq1 3610 . . . . . . . . . . . . . . 15 (𝑧 = 𝑎 → (𝑧𝑦𝑎𝑦))
8180rabbidv 3182 . . . . . . . . . . . . . 14 (𝑧 = 𝑎 → {𝑦𝑆𝑧𝑦} = {𝑦𝑆𝑎𝑦})
8281cbvmptv 4715 . . . . . . . . . . . . 13 (𝑧𝑆 ↦ {𝑦𝑆𝑧𝑦}) = (𝑎𝑆 ↦ {𝑦𝑆𝑎𝑦})
8314, 82eqtri 2648 . . . . . . . . . . . 12 𝐹 = (𝑎𝑆 ↦ {𝑦𝑆𝑎𝑦})
8483elrnmpt 5336 . . . . . . . . . . 11 ({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ V → ({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ ran 𝐹 ↔ ∃𝑎𝑆 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆𝑎𝑦}))
8579, 84syl 17 . . . . . . . . . 10 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → ({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ ran 𝐹 ↔ ∃𝑎𝑆 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} = {𝑦𝑆𝑎𝑦}))
8676, 85mpbird 247 . . . . . . . . 9 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ ran 𝐹)
87 pwidg 4149 . . . . . . . . . 10 ({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ V → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
8879, 87syl 17 . . . . . . . . 9 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
89 inelcm 4009 . . . . . . . . 9 (({𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ ran 𝐹 ∧ {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦} ∈ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) → (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅)
9086, 88, 89syl2anc 692 . . . . . . . 8 ((𝐴 ∈ V ∧ (𝑢𝑆𝑣𝑆)) → (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅)
9190ralrimivva 2970 . . . . . . 7 (𝐴 ∈ V → ∀𝑢𝑆𝑣𝑆 (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅)
92 rabexg 4777 . . . . . . . . . 10 (𝑆 ∈ V → {𝑦𝑆𝑢𝑦} ∈ V)
939, 92syl 17 . . . . . . . . 9 (𝐴 ∈ V → {𝑦𝑆𝑢𝑦} ∈ V)
9493ralrimivw 2966 . . . . . . . 8 (𝐴 ∈ V → ∀𝑢𝑆 {𝑦𝑆𝑢𝑦} ∈ V)
95 sseq1 3610 . . . . . . . . . . . 12 (𝑧 = 𝑢 → (𝑧𝑦𝑢𝑦))
9695rabbidv 3182 . . . . . . . . . . 11 (𝑧 = 𝑢 → {𝑦𝑆𝑧𝑦} = {𝑦𝑆𝑢𝑦})
9796cbvmptv 4715 . . . . . . . . . 10 (𝑧𝑆 ↦ {𝑦𝑆𝑧𝑦}) = (𝑢𝑆 ↦ {𝑦𝑆𝑢𝑦})
9814, 97eqtri 2648 . . . . . . . . 9 𝐹 = (𝑢𝑆 ↦ {𝑦𝑆𝑢𝑦})
99 ineq1 3790 . . . . . . . . . . . . . 14 (𝑎 = {𝑦𝑆𝑢𝑦} → (𝑎 ∩ {𝑦𝑆𝑣𝑦}) = ({𝑦𝑆𝑢𝑦} ∩ {𝑦𝑆𝑣𝑦}))
100 inrab 3880 . . . . . . . . . . . . . . 15 ({𝑦𝑆𝑢𝑦} ∩ {𝑦𝑆𝑣𝑦}) = {𝑦𝑆 ∣ (𝑢𝑦𝑣𝑦)}
101 unss 3770 . . . . . . . . . . . . . . . . 17 ((𝑢𝑦𝑣𝑦) ↔ (𝑢𝑣) ⊆ 𝑦)
102101a1i 11 . . . . . . . . . . . . . . . 16 (𝑦𝑆 → ((𝑢𝑦𝑣𝑦) ↔ (𝑢𝑣) ⊆ 𝑦))
103102rabbiia 3178 . . . . . . . . . . . . . . 15 {𝑦𝑆 ∣ (𝑢𝑦𝑣𝑦)} = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}
104100, 103eqtri 2648 . . . . . . . . . . . . . 14 ({𝑦𝑆𝑢𝑦} ∩ {𝑦𝑆𝑣𝑦}) = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}
10599, 104syl6eq 2676 . . . . . . . . . . . . 13 (𝑎 = {𝑦𝑆𝑢𝑦} → (𝑎 ∩ {𝑦𝑆𝑣𝑦}) = {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
106105pweqd 4140 . . . . . . . . . . . 12 (𝑎 = {𝑦𝑆𝑢𝑦} → 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦}) = 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦})
107106ineq2d 3797 . . . . . . . . . . 11 (𝑎 = {𝑦𝑆𝑢𝑦} → (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) = (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}))
108107neeq1d 2855 . . . . . . . . . 10 (𝑎 = {𝑦𝑆𝑢𝑦} → ((ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅ ↔ (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅))
109108ralbidv 2985 . . . . . . . . 9 (𝑎 = {𝑦𝑆𝑢𝑦} → (∀𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅ ↔ ∀𝑣𝑆 (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅))
11098, 109ralrnmpt 6325 . . . . . . . 8 (∀𝑢𝑆 {𝑦𝑆𝑢𝑦} ∈ V → (∀𝑎 ∈ ran 𝐹𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅ ↔ ∀𝑢𝑆𝑣𝑆 (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅))
11194, 110syl 17 . . . . . . 7 (𝐴 ∈ V → (∀𝑎 ∈ ran 𝐹𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅ ↔ ∀𝑢𝑆𝑣𝑆 (ran 𝐹 ∩ 𝒫 {𝑦𝑆 ∣ (𝑢𝑣) ⊆ 𝑦}) ≠ ∅))
11291, 111mpbird 247 . . . . . 6 (𝐴 ∈ V → ∀𝑎 ∈ ran 𝐹𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅)
113 rabexg 4777 . . . . . . . . . 10 (𝑆 ∈ V → {𝑦𝑆𝑣𝑦} ∈ V)
1149, 113syl 17 . . . . . . . . 9 (𝐴 ∈ V → {𝑦𝑆𝑣𝑦} ∈ V)
115114ralrimivw 2966 . . . . . . . 8 (𝐴 ∈ V → ∀𝑣𝑆 {𝑦𝑆𝑣𝑦} ∈ V)
116 sseq1 3610 . . . . . . . . . . . 12 (𝑧 = 𝑣 → (𝑧𝑦𝑣𝑦))
117116rabbidv 3182 . . . . . . . . . . 11 (𝑧 = 𝑣 → {𝑦𝑆𝑧𝑦} = {𝑦𝑆𝑣𝑦})
118117cbvmptv 4715 . . . . . . . . . 10 (𝑧𝑆 ↦ {𝑦𝑆𝑧𝑦}) = (𝑣𝑆 ↦ {𝑦𝑆𝑣𝑦})
11914, 118eqtri 2648 . . . . . . . . 9 𝐹 = (𝑣𝑆 ↦ {𝑦𝑆𝑣𝑦})
120 ineq2 3791 . . . . . . . . . . . 12 (𝑏 = {𝑦𝑆𝑣𝑦} → (𝑎𝑏) = (𝑎 ∩ {𝑦𝑆𝑣𝑦}))
121120pweqd 4140 . . . . . . . . . . 11 (𝑏 = {𝑦𝑆𝑣𝑦} → 𝒫 (𝑎𝑏) = 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦}))
122121ineq2d 3797 . . . . . . . . . 10 (𝑏 = {𝑦𝑆𝑣𝑦} → (ran 𝐹 ∩ 𝒫 (𝑎𝑏)) = (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})))
123122neeq1d 2855 . . . . . . . . 9 (𝑏 = {𝑦𝑆𝑣𝑦} → ((ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅ ↔ (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅))
124119, 123ralrnmpt 6325 . . . . . . . 8 (∀𝑣𝑆 {𝑦𝑆𝑣𝑦} ∈ V → (∀𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅ ↔ ∀𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅))
125115, 124syl 17 . . . . . . 7 (𝐴 ∈ V → (∀𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅ ↔ ∀𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅))
126125ralbidv 2985 . . . . . 6 (𝐴 ∈ V → (∀𝑎 ∈ ran 𝐹𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅ ↔ ∀𝑎 ∈ ran 𝐹𝑣𝑆 (ran 𝐹 ∩ 𝒫 (𝑎 ∩ {𝑦𝑆𝑣𝑦})) ≠ ∅))
127112, 126mpbird 247 . . . . 5 (𝐴 ∈ V → ∀𝑎 ∈ ran 𝐹𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅)
12835, 51, 1273jca 1240 . . . 4 (𝐴 ∈ V → (ran 𝐹 ≠ ∅ ∧ ∅ ∉ ran 𝐹 ∧ ∀𝑎 ∈ ran 𝐹𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅))
129 isfbas 21538 . . . . 5 (𝑆 ∈ V → (ran 𝐹 ∈ (fBas‘𝑆) ↔ (ran 𝐹 ⊆ 𝒫 𝑆 ∧ (ran 𝐹 ≠ ∅ ∧ ∅ ∉ ran 𝐹 ∧ ∀𝑎 ∈ ran 𝐹𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅))))
1309, 129syl 17 . . . 4 (𝐴 ∈ V → (ran 𝐹 ∈ (fBas‘𝑆) ↔ (ran 𝐹 ⊆ 𝒫 𝑆 ∧ (ran 𝐹 ≠ ∅ ∧ ∅ ∉ ran 𝐹 ∧ ∀𝑎 ∈ ran 𝐹𝑏 ∈ ran 𝐹(ran 𝐹 ∩ 𝒫 (𝑎𝑏)) ≠ ∅))))
13117, 128, 130mpbir2and 956 . . 3 (𝐴 ∈ V → ran 𝐹 ∈ (fBas‘𝑆))
1323, 131syl5eqel 2708 . 2 (𝐴 ∈ V → 𝐿 ∈ (fBas‘𝑆))
1331, 2, 1323syl 18 1 (𝜑𝐿 ∈ (fBas‘𝑆))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 384  w3a 1036   = wceq 1480  wcel 1992  wne 2796  wnel 2899  wral 2912  wrex 2913  {crab 2916  Vcvv 3191  cun 3558  cin 3559  wss 3560  c0 3896  𝒫 cpw 4135  cmpt 4678  ran crn 5080  wf 5846  cfv 5850  Fincfn 7900  fBascfbas 19648
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1841  ax-6 1890  ax-7 1937  ax-8 1994  ax-9 2001  ax-10 2021  ax-11 2036  ax-12 2049  ax-13 2250  ax-ext 2606  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6903
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1883  df-eu 2478  df-mo 2479  df-clab 2613  df-cleq 2619  df-clel 2622  df-nfc 2756  df-ne 2797  df-nel 2900  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3193  df-sbc 3423  df-csb 3520  df-dif 3563  df-un 3565  df-in 3567  df-ss 3574  df-pss 3576  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-tp 4158  df-op 4160  df-uni 4408  df-int 4446  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5642  df-ord 5688  df-on 5689  df-lim 5690  df-suc 5691  df-iota 5813  df-fun 5852  df-fn 5853  df-f 5854  df-f1 5855  df-fo 5856  df-f1o 5857  df-fv 5858  df-ov 6608  df-oprab 6609  df-mpt2 6610  df-om 7014  df-wrecs 7353  df-recs 7414  df-rdg 7452  df-oadd 7510  df-er 7688  df-en 7901  df-fin 7904  df-fbas 19657
This theorem is referenced by:  eltsms  21841  haustsms  21844  tsmscls  21846  tsmsmhm  21854  tsmsadd  21855
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