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Theorem bnj1145 30796
Description: Technical lemma for bnj69 30813. This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)
Hypotheses
Ref Expression
bnj1145.1 (𝜑 ↔ (𝑓‘∅) = pred(𝑋, 𝐴, 𝑅))
bnj1145.2 (𝜓 ↔ ∀𝑖 ∈ ω (suc 𝑖𝑛 → (𝑓‘suc 𝑖) = 𝑦 ∈ (𝑓𝑖) pred(𝑦, 𝐴, 𝑅)))
bnj1145.3 𝐷 = (ω ∖ {∅})
bnj1145.4 𝐵 = {𝑓 ∣ ∃𝑛𝐷 (𝑓 Fn 𝑛𝜑𝜓)}
bnj1145.5 (𝜒 ↔ (𝑛𝐷𝑓 Fn 𝑛𝜑𝜓))
bnj1145.6 (𝜃 ↔ ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗)))
Assertion
Ref Expression
bnj1145 trCl(𝑋, 𝐴, 𝑅) ⊆ 𝐴
Distinct variable groups:   𝐴,𝑓,𝑖,𝑗,𝑛,𝑦   𝐷,𝑖,𝑗   𝑅,𝑓,𝑖,𝑗,𝑛,𝑦   𝑓,𝑋,𝑖,𝑛,𝑦   𝜒,𝑗   𝜑,𝑖
Allowed substitution hints:   𝜑(𝑦,𝑓,𝑗,𝑛)   𝜓(𝑦,𝑓,𝑖,𝑗,𝑛)   𝜒(𝑦,𝑓,𝑖,𝑛)   𝜃(𝑦,𝑓,𝑖,𝑗,𝑛)   𝐵(𝑦,𝑓,𝑖,𝑗,𝑛)   𝐷(𝑦,𝑓,𝑛)   𝑋(𝑗)

Proof of Theorem bnj1145
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 bnj1145.1 . . 3 (𝜑 ↔ (𝑓‘∅) = pred(𝑋, 𝐴, 𝑅))
2 bnj1145.2 . . 3 (𝜓 ↔ ∀𝑖 ∈ ω (suc 𝑖𝑛 → (𝑓‘suc 𝑖) = 𝑦 ∈ (𝑓𝑖) pred(𝑦, 𝐴, 𝑅)))
3 bnj1145.3 . . 3 𝐷 = (ω ∖ {∅})
4 bnj1145.4 . . 3 𝐵 = {𝑓 ∣ ∃𝑛𝐷 (𝑓 Fn 𝑛𝜑𝜓)}
51, 2, 3, 4bnj882 30731 . 2 trCl(𝑋, 𝐴, 𝑅) = 𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖)
6 ss2iun 4507 . . . 4 (∀𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴 𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝑓𝐵 𝐴)
7 bnj1145.5 . . . . . . 7 (𝜒 ↔ (𝑛𝐷𝑓 Fn 𝑛𝜑𝜓))
87, 4bnj1083 30781 . . . . . 6 (𝑓𝐵 ↔ ∃𝑛𝜒)
92bnj1095 30587 . . . . . . . . 9 (𝜓 → ∀𝑖𝜓)
109, 7bnj1096 30588 . . . . . . . 8 (𝜒 → ∀𝑖𝜒)
113bnj1098 30589 . . . . . . . . . . . . . . . . 17 𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝑛𝐷) → (𝑗𝑛𝑖 = suc 𝑗))
127bnj1232 30609 . . . . . . . . . . . . . . . . . 18 (𝜒𝑛𝐷)
13123anim3i 1248 . . . . . . . . . . . . . . . . 17 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑖 ≠ ∅ ∧ 𝑖𝑛𝑛𝐷))
1411, 13bnj1101 30590 . . . . . . . . . . . . . . . 16 𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑗𝑛𝑖 = suc 𝑗))
15 ancl 568 . . . . . . . . . . . . . . . 16 (((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑗𝑛𝑖 = suc 𝑗)) → ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗))))
1614, 15bnj101 30524 . . . . . . . . . . . . . . 15 𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗)))
17 bnj1145.6 . . . . . . . . . . . . . . . . 17 (𝜃 ↔ ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗)))
1817imbi2i 326 . . . . . . . . . . . . . . . 16 (((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝜃) ↔ ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗))))
1918exbii 1771 . . . . . . . . . . . . . . 15 (∃𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝜃) ↔ ∃𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ∧ (𝑗𝑛𝑖 = suc 𝑗))))
2016, 19mpbir 221 . . . . . . . . . . . . . 14 𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝜃)
21 bnj213 30687 . . . . . . . . . . . . . . . 16 pred(𝑦, 𝐴, 𝑅) ⊆ 𝐴
2221bnj226 30537 . . . . . . . . . . . . . . 15 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅) ⊆ 𝐴
23 simpr 477 . . . . . . . . . . . . . . . . . . 19 ((𝑗𝑛𝑖 = suc 𝑗) → 𝑖 = suc 𝑗)
2417, 23simplbiim 658 . . . . . . . . . . . . . . . . . 18 (𝜃𝑖 = suc 𝑗)
25 simp2 1060 . . . . . . . . . . . . . . . . . . . 20 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝑖𝑛)
26123ad2ant3 1082 . . . . . . . . . . . . . . . . . . . 20 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝑛𝐷)
273bnj923 30573 . . . . . . . . . . . . . . . . . . . . 21 (𝑛𝐷𝑛 ∈ ω)
28 elnn 7029 . . . . . . . . . . . . . . . . . . . . 21 ((𝑖𝑛𝑛 ∈ ω) → 𝑖 ∈ ω)
2927, 28sylan2 491 . . . . . . . . . . . . . . . . . . . 20 ((𝑖𝑛𝑛𝐷) → 𝑖 ∈ ω)
3025, 26, 29syl2anc 692 . . . . . . . . . . . . . . . . . . 19 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → 𝑖 ∈ ω)
3117, 30bnj832 30563 . . . . . . . . . . . . . . . . . 18 (𝜃𝑖 ∈ ω)
32 vex 3192 . . . . . . . . . . . . . . . . . . . 20 𝑗 ∈ V
3332bnj216 30535 . . . . . . . . . . . . . . . . . . 19 (𝑖 = suc 𝑗𝑗𝑖)
34 elnn 7029 . . . . . . . . . . . . . . . . . . 19 ((𝑗𝑖𝑖 ∈ ω) → 𝑗 ∈ ω)
3533, 34sylan 488 . . . . . . . . . . . . . . . . . 18 ((𝑖 = suc 𝑗𝑖 ∈ ω) → 𝑗 ∈ ω)
3624, 31, 35syl2anc 692 . . . . . . . . . . . . . . . . 17 (𝜃𝑗 ∈ ω)
3717, 25bnj832 30563 . . . . . . . . . . . . . . . . . 18 (𝜃𝑖𝑛)
3824, 37eqeltrrd 2699 . . . . . . . . . . . . . . . . 17 (𝜃 → suc 𝑗𝑛)
392bnj589 30714 . . . . . . . . . . . . . . . . . . . . . . 23 (𝜓 ↔ ∀𝑗 ∈ ω (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)))
4039biimpi 206 . . . . . . . . . . . . . . . . . . . . . 22 (𝜓 → ∀𝑗 ∈ ω (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)))
4140bnj708 30561 . . . . . . . . . . . . . . . . . . . . 21 ((𝑛𝐷𝑓 Fn 𝑛𝜑𝜓) → ∀𝑗 ∈ ω (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)))
42 rsp 2924 . . . . . . . . . . . . . . . . . . . . 21 (∀𝑗 ∈ ω (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)) → (𝑗 ∈ ω → (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))))
4341, 42syl 17 . . . . . . . . . . . . . . . . . . . 20 ((𝑛𝐷𝑓 Fn 𝑛𝜑𝜓) → (𝑗 ∈ ω → (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))))
447, 43sylbi 207 . . . . . . . . . . . . . . . . . . 19 (𝜒 → (𝑗 ∈ ω → (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))))
45443ad2ant3 1082 . . . . . . . . . . . . . . . . . 18 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑗 ∈ ω → (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))))
4617, 45bnj832 30563 . . . . . . . . . . . . . . . . 17 (𝜃 → (𝑗 ∈ ω → (suc 𝑗𝑛 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))))
4736, 38, 46mp2d 49 . . . . . . . . . . . . . . . 16 (𝜃 → (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))
48 fveq2 6153 . . . . . . . . . . . . . . . . . 18 (𝑖 = suc 𝑗 → (𝑓𝑖) = (𝑓‘suc 𝑗))
4948eqeq1d 2623 . . . . . . . . . . . . . . . . 17 (𝑖 = suc 𝑗 → ((𝑓𝑖) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅) ↔ (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)))
5024, 49syl 17 . . . . . . . . . . . . . . . 16 (𝜃 → ((𝑓𝑖) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅) ↔ (𝑓‘suc 𝑗) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅)))
5147, 50mpbird 247 . . . . . . . . . . . . . . 15 (𝜃 → (𝑓𝑖) = 𝑦 ∈ (𝑓𝑗) pred(𝑦, 𝐴, 𝑅))
5222, 51bnj1262 30616 . . . . . . . . . . . . . 14 (𝜃 → (𝑓𝑖) ⊆ 𝐴)
5320, 52bnj1023 30586 . . . . . . . . . . . . 13 𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴)
54 3anass 1040 . . . . . . . . . . . . . . 15 ((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) ↔ (𝑖 ≠ ∅ ∧ (𝑖𝑛𝜒)))
5554imbi1i 339 . . . . . . . . . . . . . 14 (((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴) ↔ ((𝑖 ≠ ∅ ∧ (𝑖𝑛𝜒)) → (𝑓𝑖) ⊆ 𝐴))
5655exbii 1771 . . . . . . . . . . . . 13 (∃𝑗((𝑖 ≠ ∅ ∧ 𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴) ↔ ∃𝑗((𝑖 ≠ ∅ ∧ (𝑖𝑛𝜒)) → (𝑓𝑖) ⊆ 𝐴))
5753, 56mpbi 220 . . . . . . . . . . . 12 𝑗((𝑖 ≠ ∅ ∧ (𝑖𝑛𝜒)) → (𝑓𝑖) ⊆ 𝐴)
581biimpi 206 . . . . . . . . . . . . . . 15 (𝜑 → (𝑓‘∅) = pred(𝑋, 𝐴, 𝑅))
597, 58bnj771 30569 . . . . . . . . . . . . . 14 (𝜒 → (𝑓‘∅) = pred(𝑋, 𝐴, 𝑅))
60 fveq2 6153 . . . . . . . . . . . . . . 15 (𝑖 = ∅ → (𝑓𝑖) = (𝑓‘∅))
61 bnj213 30687 . . . . . . . . . . . . . . . 16 pred(𝑋, 𝐴, 𝑅) ⊆ 𝐴
62 sseq1 3610 . . . . . . . . . . . . . . . 16 ((𝑓‘∅) = pred(𝑋, 𝐴, 𝑅) → ((𝑓‘∅) ⊆ 𝐴 ↔ pred(𝑋, 𝐴, 𝑅) ⊆ 𝐴))
6361, 62mpbiri 248 . . . . . . . . . . . . . . 15 ((𝑓‘∅) = pred(𝑋, 𝐴, 𝑅) → (𝑓‘∅) ⊆ 𝐴)
64 sseq1 3610 . . . . . . . . . . . . . . . 16 ((𝑓𝑖) = (𝑓‘∅) → ((𝑓𝑖) ⊆ 𝐴 ↔ (𝑓‘∅) ⊆ 𝐴))
6564biimpar 502 . . . . . . . . . . . . . . 15 (((𝑓𝑖) = (𝑓‘∅) ∧ (𝑓‘∅) ⊆ 𝐴) → (𝑓𝑖) ⊆ 𝐴)
6660, 63, 65syl2an 494 . . . . . . . . . . . . . 14 ((𝑖 = ∅ ∧ (𝑓‘∅) = pred(𝑋, 𝐴, 𝑅)) → (𝑓𝑖) ⊆ 𝐴)
6759, 66sylan2 491 . . . . . . . . . . . . 13 ((𝑖 = ∅ ∧ 𝜒) → (𝑓𝑖) ⊆ 𝐴)
6867adantrl 751 . . . . . . . . . . . 12 ((𝑖 = ∅ ∧ (𝑖𝑛𝜒)) → (𝑓𝑖) ⊆ 𝐴)
6957, 68bnj1109 30592 . . . . . . . . . . 11 𝑗((𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴)
70 19.9v 1893 . . . . . . . . . . 11 (∃𝑗((𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴) ↔ ((𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴))
7169, 70mpbi 220 . . . . . . . . . 10 ((𝑖𝑛𝜒) → (𝑓𝑖) ⊆ 𝐴)
7271expcom 451 . . . . . . . . 9 (𝜒 → (𝑖𝑛 → (𝑓𝑖) ⊆ 𝐴))
73 fndm 5953 . . . . . . . . . . 11 (𝑓 Fn 𝑛 → dom 𝑓 = 𝑛)
747, 73bnj770 30568 . . . . . . . . . 10 (𝜒 → dom 𝑓 = 𝑛)
75 eleq2 2687 . . . . . . . . . . 11 (dom 𝑓 = 𝑛 → (𝑖 ∈ dom 𝑓𝑖𝑛))
7675imbi1d 331 . . . . . . . . . 10 (dom 𝑓 = 𝑛 → ((𝑖 ∈ dom 𝑓 → (𝑓𝑖) ⊆ 𝐴) ↔ (𝑖𝑛 → (𝑓𝑖) ⊆ 𝐴)))
7774, 76syl 17 . . . . . . . . 9 (𝜒 → ((𝑖 ∈ dom 𝑓 → (𝑓𝑖) ⊆ 𝐴) ↔ (𝑖𝑛 → (𝑓𝑖) ⊆ 𝐴)))
7872, 77mpbird 247 . . . . . . . 8 (𝜒 → (𝑖 ∈ dom 𝑓 → (𝑓𝑖) ⊆ 𝐴))
7910, 78hbralrimi 2949 . . . . . . 7 (𝜒 → ∀𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴)
8079exlimiv 1855 . . . . . 6 (∃𝑛𝜒 → ∀𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴)
818, 80sylbi 207 . . . . 5 (𝑓𝐵 → ∀𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴)
82 ss2iun 4507 . . . . . 6 (∀𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝑖 ∈ dom 𝑓 𝐴)
83 bnj1143 30596 . . . . . 6 𝑖 ∈ dom 𝑓 𝐴𝐴
8482, 83syl6ss 3599 . . . . 5 (∀𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴)
8581, 84syl 17 . . . 4 (𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴)
866, 85mprg 2921 . . 3 𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝑓𝐵 𝐴
874bnj1317 30627 . . . 4 (𝑤𝐵 → ∀𝑓 𝑤𝐵)
8887bnj1146 30597 . . 3 𝑓𝐵 𝐴𝐴
8986, 88sstri 3596 . 2 𝑓𝐵 𝑖 ∈ dom 𝑓(𝑓𝑖) ⊆ 𝐴
905, 89eqsstri 3619 1 trCl(𝑋, 𝐴, 𝑅) ⊆ 𝐴
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384  w3a 1036   = wceq 1480  wex 1701  wcel 1987  {cab 2607  wne 2790  wral 2907  wrex 2908  cdif 3556  wss 3559  c0 3896  {csn 4153   ciun 4490  dom cdm 5079  suc csuc 5689   Fn wfn 5847  cfv 5852  ωcom 7019  w-bnj17 30486   predc-bnj14 30488   trClc-bnj18 30494
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 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-sep 4746  ax-nul 4754  ax-pr 4872  ax-un 6909
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 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-rab 2916  df-v 3191  df-sbc 3422  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-pss 3575  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-iun 4492  df-br 4619  df-opab 4679  df-tr 4718  df-eprel 4990  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-ord 5690  df-on 5691  df-lim 5692  df-suc 5693  df-iota 5815  df-fn 5855  df-fv 5860  df-om 7020  df-bnj17 30487  df-bnj14 30489  df-bnj18 30495
This theorem is referenced by:  bnj1147  30797
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