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Theorem filnetlem3 33615
Description: Lemma for filnet 33617. (Contributed by Jeff Hankins, 13-Dec-2009.) (Revised by Mario Carneiro, 8-Aug-2015.)
Hypotheses
Ref Expression
filnet.h 𝐻 = 𝑛𝐹 ({𝑛} × 𝑛)
filnet.d 𝐷 = {⟨𝑥, 𝑦⟩ ∣ ((𝑥𝐻𝑦𝐻) ∧ (1st𝑦) ⊆ (1st𝑥))}
Assertion
Ref Expression
filnetlem3 (𝐻 = 𝐷 ∧ (𝐹 ∈ (Fil‘𝑋) → (𝐻 ⊆ (𝐹 × 𝑋) ∧ 𝐷 ∈ DirRel)))
Distinct variable groups:   𝑥,𝑦,𝑛,𝐹   𝑥,𝐻,𝑦   𝑛,𝑋
Allowed substitution hints:   𝐷(𝑥,𝑦,𝑛)   𝐻(𝑛)   𝑋(𝑥,𝑦)

Proof of Theorem filnetlem3
Dummy variables 𝑢 𝑣 𝑤 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 dmresi 5920 . . . . . 6 dom ( I ↾ 𝐻) = 𝐻
2 filnet.h . . . . . . . . 9 𝐻 = 𝑛𝐹 ({𝑛} × 𝑛)
3 filnet.d . . . . . . . . 9 𝐷 = {⟨𝑥, 𝑦⟩ ∣ ((𝑥𝐻𝑦𝐻) ∧ (1st𝑦) ⊆ (1st𝑥))}
42, 3filnetlem2 33614 . . . . . . . 8 (( I ↾ 𝐻) ⊆ 𝐷𝐷 ⊆ (𝐻 × 𝐻))
54simpli 484 . . . . . . 7 ( I ↾ 𝐻) ⊆ 𝐷
6 dmss 5770 . . . . . . 7 (( I ↾ 𝐻) ⊆ 𝐷 → dom ( I ↾ 𝐻) ⊆ dom 𝐷)
75, 6ax-mp 5 . . . . . 6 dom ( I ↾ 𝐻) ⊆ dom 𝐷
81, 7eqsstrri 4006 . . . . 5 𝐻 ⊆ dom 𝐷
9 ssun1 4152 . . . . 5 dom 𝐷 ⊆ (dom 𝐷 ∪ ran 𝐷)
108, 9sstri 3980 . . . 4 𝐻 ⊆ (dom 𝐷 ∪ ran 𝐷)
11 dmrnssfld 5840 . . . 4 (dom 𝐷 ∪ ran 𝐷) ⊆ 𝐷
1210, 11sstri 3980 . . 3 𝐻 𝐷
134simpri 486 . . . . 5 𝐷 ⊆ (𝐻 × 𝐻)
14 uniss 4858 . . . . 5 (𝐷 ⊆ (𝐻 × 𝐻) → 𝐷 (𝐻 × 𝐻))
15 uniss 4858 . . . . 5 ( 𝐷 (𝐻 × 𝐻) → 𝐷 (𝐻 × 𝐻))
1613, 14, 15mp2b 10 . . . 4 𝐷 (𝐻 × 𝐻)
17 unixpss 5682 . . . . 5 (𝐻 × 𝐻) ⊆ (𝐻𝐻)
18 unidm 4132 . . . . 5 (𝐻𝐻) = 𝐻
1917, 18sseqtri 4007 . . . 4 (𝐻 × 𝐻) ⊆ 𝐻
2016, 19sstri 3980 . . 3 𝐷𝐻
2112, 20eqssi 3987 . 2 𝐻 = 𝐷
22 filelss 22379 . . . . . . . 8 ((𝐹 ∈ (Fil‘𝑋) ∧ 𝑛𝐹) → 𝑛𝑋)
23 xpss2 5574 . . . . . . . 8 (𝑛𝑋 → ({𝑛} × 𝑛) ⊆ ({𝑛} × 𝑋))
2422, 23syl 17 . . . . . . 7 ((𝐹 ∈ (Fil‘𝑋) ∧ 𝑛𝐹) → ({𝑛} × 𝑛) ⊆ ({𝑛} × 𝑋))
2524ralrimiva 3187 . . . . . 6 (𝐹 ∈ (Fil‘𝑋) → ∀𝑛𝐹 ({𝑛} × 𝑛) ⊆ ({𝑛} × 𝑋))
26 ss2iun 4934 . . . . . 6 (∀𝑛𝐹 ({𝑛} × 𝑛) ⊆ ({𝑛} × 𝑋) → 𝑛𝐹 ({𝑛} × 𝑛) ⊆ 𝑛𝐹 ({𝑛} × 𝑋))
2725, 26syl 17 . . . . 5 (𝐹 ∈ (Fil‘𝑋) → 𝑛𝐹 ({𝑛} × 𝑛) ⊆ 𝑛𝐹 ({𝑛} × 𝑋))
28 iunxpconst 5623 . . . . 5 𝑛𝐹 ({𝑛} × 𝑋) = (𝐹 × 𝑋)
2927, 28sseqtrdi 4021 . . . 4 (𝐹 ∈ (Fil‘𝑋) → 𝑛𝐹 ({𝑛} × 𝑛) ⊆ (𝐹 × 𝑋))
302, 29eqsstrid 4019 . . 3 (𝐹 ∈ (Fil‘𝑋) → 𝐻 ⊆ (𝐹 × 𝑋))
315a1i 11 . . . . 5 (𝐹 ∈ (Fil‘𝑋) → ( I ↾ 𝐻) ⊆ 𝐷)
323relopabi 5693 . . . . 5 Rel 𝐷
3331, 32jctil 520 . . . 4 (𝐹 ∈ (Fil‘𝑋) → (Rel 𝐷 ∧ ( I ↾ 𝐻) ⊆ 𝐷))
34 simpl 483 . . . . . . . . . 10 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝐹 ∈ (Fil‘𝑋))
3530adantr 481 . . . . . . . . . . . 12 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝐻 ⊆ (𝐹 × 𝑋))
36 simprl 767 . . . . . . . . . . . 12 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝑣𝐻)
3735, 36sseldd 3972 . . . . . . . . . . 11 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝑣 ∈ (𝐹 × 𝑋))
38 xp1st 7712 . . . . . . . . . . 11 (𝑣 ∈ (𝐹 × 𝑋) → (1st𝑣) ∈ 𝐹)
3937, 38syl 17 . . . . . . . . . 10 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → (1st𝑣) ∈ 𝐹)
40 simprr 769 . . . . . . . . . . . 12 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝑧𝐻)
4135, 40sseldd 3972 . . . . . . . . . . 11 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → 𝑧 ∈ (𝐹 × 𝑋))
42 xp1st 7712 . . . . . . . . . . 11 (𝑧 ∈ (𝐹 × 𝑋) → (1st𝑧) ∈ 𝐹)
4341, 42syl 17 . . . . . . . . . 10 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → (1st𝑧) ∈ 𝐹)
44 filinn0 22387 . . . . . . . . . 10 ((𝐹 ∈ (Fil‘𝑋) ∧ (1st𝑣) ∈ 𝐹 ∧ (1st𝑧) ∈ 𝐹) → ((1st𝑣) ∩ (1st𝑧)) ≠ ∅)
4534, 39, 43, 44syl3anc 1365 . . . . . . . . 9 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → ((1st𝑣) ∩ (1st𝑧)) ≠ ∅)
46 n0 4314 . . . . . . . . 9 (((1st𝑣) ∩ (1st𝑧)) ≠ ∅ ↔ ∃𝑢 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧)))
4745, 46sylib 219 . . . . . . . 8 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → ∃𝑢 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧)))
4836adantr 481 . . . . . . . . . 10 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → 𝑣𝐻)
49 filin 22381 . . . . . . . . . . . . . 14 ((𝐹 ∈ (Fil‘𝑋) ∧ (1st𝑣) ∈ 𝐹 ∧ (1st𝑧) ∈ 𝐹) → ((1st𝑣) ∩ (1st𝑧)) ∈ 𝐹)
5034, 39, 43, 49syl3anc 1365 . . . . . . . . . . . . 13 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → ((1st𝑣) ∩ (1st𝑧)) ∈ 𝐹)
5150adantr 481 . . . . . . . . . . . 12 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → ((1st𝑣) ∩ (1st𝑧)) ∈ 𝐹)
52 simpr 485 . . . . . . . . . . . 12 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧)))
53 id 22 . . . . . . . . . . . . 13 (𝑛 = ((1st𝑣) ∩ (1st𝑧)) → 𝑛 = ((1st𝑣) ∩ (1st𝑧)))
5453opeliunxp2 5708 . . . . . . . . . . . 12 (⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝑛𝐹 ({𝑛} × 𝑛) ↔ (((1st𝑣) ∩ (1st𝑧)) ∈ 𝐹𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))))
5551, 52, 54sylanbrc 583 . . . . . . . . . . 11 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝑛𝐹 ({𝑛} × 𝑛))
5655, 2syl6eleqr 2929 . . . . . . . . . 10 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝐻)
57 fvex 6680 . . . . . . . . . . . . . 14 (1st𝑣) ∈ V
5857inex1 5218 . . . . . . . . . . . . 13 ((1st𝑣) ∩ (1st𝑧)) ∈ V
59 vex 3503 . . . . . . . . . . . . 13 𝑢 ∈ V
6058, 59op1st 7688 . . . . . . . . . . . 12 (1st ‘⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) = ((1st𝑣) ∩ (1st𝑧))
61 inss1 4209 . . . . . . . . . . . 12 ((1st𝑣) ∩ (1st𝑧)) ⊆ (1st𝑣)
6260, 61eqsstri 4005 . . . . . . . . . . 11 (1st ‘⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) ⊆ (1st𝑣)
63 vex 3503 . . . . . . . . . . . 12 𝑣 ∈ V
64 opex 5353 . . . . . . . . . . . 12 ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ V
652, 3, 63, 64filnetlem1 33613 . . . . . . . . . . 11 (𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ↔ ((𝑣𝐻 ∧ ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝐻) ∧ (1st ‘⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) ⊆ (1st𝑣)))
6662, 65mpbiran2 706 . . . . . . . . . 10 (𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ↔ (𝑣𝐻 ∧ ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝐻))
6748, 56, 66sylanbrc 583 . . . . . . . . 9 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → 𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩)
6840adantr 481 . . . . . . . . . 10 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → 𝑧𝐻)
69 inss2 4210 . . . . . . . . . . . 12 ((1st𝑣) ∩ (1st𝑧)) ⊆ (1st𝑧)
7060, 69eqsstri 4005 . . . . . . . . . . 11 (1st ‘⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) ⊆ (1st𝑧)
71 vex 3503 . . . . . . . . . . . 12 𝑧 ∈ V
722, 3, 71, 64filnetlem1 33613 . . . . . . . . . . 11 (𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ↔ ((𝑧𝐻 ∧ ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝐻) ∧ (1st ‘⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) ⊆ (1st𝑧)))
7370, 72mpbiran2 706 . . . . . . . . . 10 (𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ↔ (𝑧𝐻 ∧ ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∈ 𝐻))
7468, 56, 73sylanbrc 583 . . . . . . . . 9 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → 𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩)
75 breq2 5067 . . . . . . . . . . 11 (𝑤 = ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ → (𝑣𝐷𝑤𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩))
76 breq2 5067 . . . . . . . . . . 11 (𝑤 = ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ → (𝑧𝐷𝑤𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩))
7775, 76anbi12d 630 . . . . . . . . . 10 (𝑤 = ⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ → ((𝑣𝐷𝑤𝑧𝐷𝑤) ↔ (𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∧ 𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩)))
7864, 77spcev 3611 . . . . . . . . 9 ((𝑣𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩ ∧ 𝑧𝐷⟨((1st𝑣) ∩ (1st𝑧)), 𝑢⟩) → ∃𝑤(𝑣𝐷𝑤𝑧𝐷𝑤))
7967, 74, 78syl2anc 584 . . . . . . . 8 (((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) ∧ 𝑢 ∈ ((1st𝑣) ∩ (1st𝑧))) → ∃𝑤(𝑣𝐷𝑤𝑧𝐷𝑤))
8047, 79exlimddv 1929 . . . . . . 7 ((𝐹 ∈ (Fil‘𝑋) ∧ (𝑣𝐻𝑧𝐻)) → ∃𝑤(𝑣𝐷𝑤𝑧𝐷𝑤))
8180ralrimivva 3196 . . . . . 6 (𝐹 ∈ (Fil‘𝑋) → ∀𝑣𝐻𝑧𝐻𝑤(𝑣𝐷𝑤𝑧𝐷𝑤))
82 codir 5978 . . . . . 6 ((𝐻 × 𝐻) ⊆ (𝐷𝐷) ↔ ∀𝑣𝐻𝑧𝐻𝑤(𝑣𝐷𝑤𝑧𝐷𝑤))
8381, 82sylibr 235 . . . . 5 (𝐹 ∈ (Fil‘𝑋) → (𝐻 × 𝐻) ⊆ (𝐷𝐷))
84 vex 3503 . . . . . . . . . . . . 13 𝑤 ∈ V
852, 3, 63, 84filnetlem1 33613 . . . . . . . . . . . 12 (𝑣𝐷𝑤 ↔ ((𝑣𝐻𝑤𝐻) ∧ (1st𝑤) ⊆ (1st𝑣)))
8685simplbi 498 . . . . . . . . . . 11 (𝑣𝐷𝑤 → (𝑣𝐻𝑤𝐻))
8786simpld 495 . . . . . . . . . 10 (𝑣𝐷𝑤𝑣𝐻)
882, 3, 84, 71filnetlem1 33613 . . . . . . . . . . . 12 (𝑤𝐷𝑧 ↔ ((𝑤𝐻𝑧𝐻) ∧ (1st𝑧) ⊆ (1st𝑤)))
8988simplbi 498 . . . . . . . . . . 11 (𝑤𝐷𝑧 → (𝑤𝐻𝑧𝐻))
9089simprd 496 . . . . . . . . . 10 (𝑤𝐷𝑧𝑧𝐻)
9187, 90anim12i 612 . . . . . . . . 9 ((𝑣𝐷𝑤𝑤𝐷𝑧) → (𝑣𝐻𝑧𝐻))
9288simprbi 497 . . . . . . . . . 10 (𝑤𝐷𝑧 → (1st𝑧) ⊆ (1st𝑤))
9385simprbi 497 . . . . . . . . . 10 (𝑣𝐷𝑤 → (1st𝑤) ⊆ (1st𝑣))
9492, 93sylan9ssr 3985 . . . . . . . . 9 ((𝑣𝐷𝑤𝑤𝐷𝑧) → (1st𝑧) ⊆ (1st𝑣))
952, 3, 63, 71filnetlem1 33613 . . . . . . . . 9 (𝑣𝐷𝑧 ↔ ((𝑣𝐻𝑧𝐻) ∧ (1st𝑧) ⊆ (1st𝑣)))
9691, 94, 95sylanbrc 583 . . . . . . . 8 ((𝑣𝐷𝑤𝑤𝐷𝑧) → 𝑣𝐷𝑧)
9796ax-gen 1789 . . . . . . 7 𝑧((𝑣𝐷𝑤𝑤𝐷𝑧) → 𝑣𝐷𝑧)
9897gen2 1790 . . . . . 6 𝑣𝑤𝑧((𝑣𝐷𝑤𝑤𝐷𝑧) → 𝑣𝐷𝑧)
99 cotr 5970 . . . . . 6 ((𝐷𝐷) ⊆ 𝐷 ↔ ∀𝑣𝑤𝑧((𝑣𝐷𝑤𝑤𝐷𝑧) → 𝑣𝐷𝑧))
10098, 99mpbir 232 . . . . 5 (𝐷𝐷) ⊆ 𝐷
10183, 100jctil 520 . . . 4 (𝐹 ∈ (Fil‘𝑋) → ((𝐷𝐷) ⊆ 𝐷 ∧ (𝐻 × 𝐻) ⊆ (𝐷𝐷)))
102 filtop 22382 . . . . . . . . 9 (𝐹 ∈ (Fil‘𝑋) → 𝑋𝐹)
103 xpexg 7462 . . . . . . . . 9 ((𝐹 ∈ (Fil‘𝑋) ∧ 𝑋𝐹) → (𝐹 × 𝑋) ∈ V)
104102, 103mpdan 683 . . . . . . . 8 (𝐹 ∈ (Fil‘𝑋) → (𝐹 × 𝑋) ∈ V)
105104, 30ssexd 5225 . . . . . . 7 (𝐹 ∈ (Fil‘𝑋) → 𝐻 ∈ V)
106105, 105xpexd 7463 . . . . . 6 (𝐹 ∈ (Fil‘𝑋) → (𝐻 × 𝐻) ∈ V)
107 ssexg 5224 . . . . . 6 ((𝐷 ⊆ (𝐻 × 𝐻) ∧ (𝐻 × 𝐻) ∈ V) → 𝐷 ∈ V)
10813, 106, 107sylancr 587 . . . . 5 (𝐹 ∈ (Fil‘𝑋) → 𝐷 ∈ V)
10921isdir 17832 . . . . 5 (𝐷 ∈ V → (𝐷 ∈ DirRel ↔ ((Rel 𝐷 ∧ ( I ↾ 𝐻) ⊆ 𝐷) ∧ ((𝐷𝐷) ⊆ 𝐷 ∧ (𝐻 × 𝐻) ⊆ (𝐷𝐷)))))
110108, 109syl 17 . . . 4 (𝐹 ∈ (Fil‘𝑋) → (𝐷 ∈ DirRel ↔ ((Rel 𝐷 ∧ ( I ↾ 𝐻) ⊆ 𝐷) ∧ ((𝐷𝐷) ⊆ 𝐷 ∧ (𝐻 × 𝐻) ⊆ (𝐷𝐷)))))
11133, 101, 110mpbir2and 709 . . 3 (𝐹 ∈ (Fil‘𝑋) → 𝐷 ∈ DirRel)
11230, 111jca 512 . 2 (𝐹 ∈ (Fil‘𝑋) → (𝐻 ⊆ (𝐹 × 𝑋) ∧ 𝐷 ∈ DirRel))
11321, 112pm3.2i 471 1 (𝐻 = 𝐷 ∧ (𝐹 ∈ (Fil‘𝑋) → (𝐻 ⊆ (𝐹 × 𝑋) ∧ 𝐷 ∈ DirRel)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  wal 1528   = wceq 1530  wex 1773  wcel 2107  wne 3021  wral 3143  Vcvv 3500  cun 3938  cin 3939  wss 3940  c0 4295  {csn 4564  cop 4570   cuni 4837   ciun 4917   class class class wbr 5063  {copab 5125   I cid 5458   × cxp 5552  ccnv 5553  dom cdm 5554  ran crn 5555  cres 5556  ccom 5558  Rel wrel 5559  cfv 6352  1st c1st 7678  DirRelcdir 17828  Filcfil 22372
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2798  ax-sep 5200  ax-nul 5207  ax-pow 5263  ax-pr 5326  ax-un 7451
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2620  df-eu 2652  df-clab 2805  df-cleq 2819  df-clel 2898  df-nfc 2968  df-ne 3022  df-nel 3129  df-ral 3148  df-rex 3149  df-reu 3150  df-rab 3152  df-v 3502  df-sbc 3777  df-csb 3888  df-dif 3943  df-un 3945  df-in 3947  df-ss 3956  df-nul 4296  df-if 4471  df-pw 4544  df-sn 4565  df-pr 4567  df-op 4571  df-uni 4838  df-iun 4919  df-br 5064  df-opab 5126  df-mpt 5144  df-id 5459  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-rn 5565  df-res 5566  df-ima 5567  df-iota 6312  df-fun 6354  df-fn 6355  df-f 6356  df-f1 6357  df-fo 6358  df-f1o 6359  df-fv 6360  df-1st 7680  df-dir 17830  df-fbas 20461  df-fil 22373
This theorem is referenced by:  filnetlem4  33616
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