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Theorem fnwe2lem2 38040
Description: Lemma for fnwe2 38042. An element which is in a minimal fiber and minimal within its fiber is minimal globally; thus 𝑇 is well-founded. (Contributed by Stefan O'Rear, 19-Jan-2015.)
Hypotheses
Ref Expression
fnwe2.su (𝑧 = (𝐹𝑥) → 𝑆 = 𝑈)
fnwe2.t 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ((𝐹𝑥)𝑅(𝐹𝑦) ∨ ((𝐹𝑥) = (𝐹𝑦) ∧ 𝑥𝑈𝑦))}
fnwe2.s ((𝜑𝑥𝐴) → 𝑈 We {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑥)})
fnwe2.f (𝜑 → (𝐹𝐴):𝐴𝐵)
fnwe2.r (𝜑𝑅 We 𝐵)
fnwe2lem2.a (𝜑𝑎𝐴)
fnwe2lem2.n0 (𝜑𝑎 ≠ ∅)
Assertion
Ref Expression
fnwe2lem2 (𝜑 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)
Distinct variable groups:   𝑦,𝑈,𝑧,𝑎,𝑏,𝑐   𝑥,𝑆,𝑦,𝑎,𝑏,𝑐   𝑥,𝑅,𝑦,𝑎,𝑏,𝑐   𝜑,𝑥,𝑦,𝑧,𝑐   𝑥,𝐴,𝑦,𝑧,𝑎,𝑏,𝑐   𝑥,𝐹,𝑦,𝑧,𝑎,𝑏,𝑐   𝑇,𝑎,𝑏,𝑐   𝐵,𝑎,𝑏,𝑐   𝜑,𝑏
Allowed substitution hints:   𝜑(𝑎)   𝐵(𝑥,𝑦,𝑧)   𝑅(𝑧)   𝑆(𝑧)   𝑇(𝑥,𝑦,𝑧)   𝑈(𝑥)

Proof of Theorem fnwe2lem2
Dummy variables 𝑑 𝑒 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fnwe2.f . . . 4 (𝜑 → (𝐹𝐴):𝐴𝐵)
2 ffun 6161 . . . 4 ((𝐹𝐴):𝐴𝐵 → Fun (𝐹𝐴))
3 vex 3307 . . . . 5 𝑎 ∈ V
43funimaex 6089 . . . 4 (Fun (𝐹𝐴) → ((𝐹𝐴) “ 𝑎) ∈ V)
51, 2, 43syl 18 . . 3 (𝜑 → ((𝐹𝐴) “ 𝑎) ∈ V)
6 fnwe2.r . . . 4 (𝜑𝑅 We 𝐵)
7 wefr 5208 . . . 4 (𝑅 We 𝐵𝑅 Fr 𝐵)
86, 7syl 17 . . 3 (𝜑𝑅 Fr 𝐵)
9 imassrn 5587 . . . 4 ((𝐹𝐴) “ 𝑎) ⊆ ran (𝐹𝐴)
10 frn 6166 . . . . 5 ((𝐹𝐴):𝐴𝐵 → ran (𝐹𝐴) ⊆ 𝐵)
111, 10syl 17 . . . 4 (𝜑 → ran (𝐹𝐴) ⊆ 𝐵)
129, 11syl5ss 3720 . . 3 (𝜑 → ((𝐹𝐴) “ 𝑎) ⊆ 𝐵)
13 incom 3913 . . . . . 6 (dom (𝐹𝐴) ∩ 𝑎) = (𝑎 ∩ dom (𝐹𝐴))
14 fnwe2lem2.a . . . . . . . 8 (𝜑𝑎𝐴)
15 fdm 6164 . . . . . . . . 9 ((𝐹𝐴):𝐴𝐵 → dom (𝐹𝐴) = 𝐴)
161, 15syl 17 . . . . . . . 8 (𝜑 → dom (𝐹𝐴) = 𝐴)
1714, 16sseqtr4d 3748 . . . . . . 7 (𝜑𝑎 ⊆ dom (𝐹𝐴))
18 df-ss 3694 . . . . . . 7 (𝑎 ⊆ dom (𝐹𝐴) ↔ (𝑎 ∩ dom (𝐹𝐴)) = 𝑎)
1917, 18sylib 208 . . . . . 6 (𝜑 → (𝑎 ∩ dom (𝐹𝐴)) = 𝑎)
2013, 19syl5eq 2770 . . . . 5 (𝜑 → (dom (𝐹𝐴) ∩ 𝑎) = 𝑎)
21 fnwe2lem2.n0 . . . . 5 (𝜑𝑎 ≠ ∅)
2220, 21eqnetrd 2963 . . . 4 (𝜑 → (dom (𝐹𝐴) ∩ 𝑎) ≠ ∅)
23 imadisj 5594 . . . . 5 (((𝐹𝐴) “ 𝑎) = ∅ ↔ (dom (𝐹𝐴) ∩ 𝑎) = ∅)
2423necon3bii 2948 . . . 4 (((𝐹𝐴) “ 𝑎) ≠ ∅ ↔ (dom (𝐹𝐴) ∩ 𝑎) ≠ ∅)
2522, 24sylibr 224 . . 3 (𝜑 → ((𝐹𝐴) “ 𝑎) ≠ ∅)
26 fri 5180 . . 3 (((((𝐹𝐴) “ 𝑎) ∈ V ∧ 𝑅 Fr 𝐵) ∧ (((𝐹𝐴) “ 𝑎) ⊆ 𝐵 ∧ ((𝐹𝐴) “ 𝑎) ≠ ∅)) → ∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑)
275, 8, 12, 25, 26syl22anc 1440 . 2 (𝜑 → ∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑)
28 df-ima 5231 . . . . . 6 ((𝐹𝐴) “ 𝑎) = ran ((𝐹𝐴) ↾ 𝑎)
2928rexeqi 3246 . . . . 5 (∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∃𝑑 ∈ ran ((𝐹𝐴) ↾ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑)
30 ffn 6158 . . . . . . . 8 ((𝐹𝐴):𝐴𝐵 → (𝐹𝐴) Fn 𝐴)
311, 30syl 17 . . . . . . 7 (𝜑 → (𝐹𝐴) Fn 𝐴)
32 fnssres 6117 . . . . . . 7 (((𝐹𝐴) Fn 𝐴𝑎𝐴) → ((𝐹𝐴) ↾ 𝑎) Fn 𝑎)
3331, 14, 32syl2anc 696 . . . . . 6 (𝜑 → ((𝐹𝐴) ↾ 𝑎) Fn 𝑎)
34 breq2 4764 . . . . . . . . 9 (𝑑 = (((𝐹𝐴) ↾ 𝑎)‘𝑓) → (𝑒𝑅𝑑𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
3534notbid 307 . . . . . . . 8 (𝑑 = (((𝐹𝐴) ↾ 𝑎)‘𝑓) → (¬ 𝑒𝑅𝑑 ↔ ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
3635ralbidv 3088 . . . . . . 7 (𝑑 = (((𝐹𝐴) ↾ 𝑎)‘𝑓) → (∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
3736rexrn 6476 . . . . . 6 (((𝐹𝐴) ↾ 𝑎) Fn 𝑎 → (∃𝑑 ∈ ran ((𝐹𝐴) ↾ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∃𝑓𝑎𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
3833, 37syl 17 . . . . 5 (𝜑 → (∃𝑑 ∈ ran ((𝐹𝐴) ↾ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∃𝑓𝑎𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
3929, 38syl5bb 272 . . . 4 (𝜑 → (∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∃𝑓𝑎𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4028raleqi 3245 . . . . . . . 8 (∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑒 ∈ ran ((𝐹𝐴) ↾ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓))
41 breq1 4763 . . . . . . . . . . 11 (𝑒 = (((𝐹𝐴) ↾ 𝑎)‘𝑑) → (𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4241notbid 307 . . . . . . . . . 10 (𝑒 = (((𝐹𝐴) ↾ 𝑎)‘𝑑) → (¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4342ralrn 6477 . . . . . . . . 9 (((𝐹𝐴) ↾ 𝑎) Fn 𝑎 → (∀𝑒 ∈ ran ((𝐹𝐴) ↾ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4433, 43syl 17 . . . . . . . 8 (𝜑 → (∀𝑒 ∈ ran ((𝐹𝐴) ↾ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4540, 44syl5bb 272 . . . . . . 7 (𝜑 → (∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4645adantr 472 . . . . . 6 ((𝜑𝑓𝑎) → (∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓)))
4714resabs1d 5538 . . . . . . . . . . . 12 (𝜑 → ((𝐹𝐴) ↾ 𝑎) = (𝐹𝑎))
4847ad2antrr 764 . . . . . . . . . . 11 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → ((𝐹𝐴) ↾ 𝑎) = (𝐹𝑎))
4948fveq1d 6306 . . . . . . . . . 10 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → (((𝐹𝐴) ↾ 𝑎)‘𝑑) = ((𝐹𝑎)‘𝑑))
50 fvres 6320 . . . . . . . . . . 11 (𝑑𝑎 → ((𝐹𝑎)‘𝑑) = (𝐹𝑑))
5150adantl 473 . . . . . . . . . 10 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → ((𝐹𝑎)‘𝑑) = (𝐹𝑑))
5249, 51eqtrd 2758 . . . . . . . . 9 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → (((𝐹𝐴) ↾ 𝑎)‘𝑑) = (𝐹𝑑))
5348fveq1d 6306 . . . . . . . . . 10 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → (((𝐹𝐴) ↾ 𝑎)‘𝑓) = ((𝐹𝑎)‘𝑓))
54 fvres 6320 . . . . . . . . . . 11 (𝑓𝑎 → ((𝐹𝑎)‘𝑓) = (𝐹𝑓))
5554ad2antlr 765 . . . . . . . . . 10 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → ((𝐹𝑎)‘𝑓) = (𝐹𝑓))
5653, 55eqtrd 2758 . . . . . . . . 9 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → (((𝐹𝐴) ↾ 𝑎)‘𝑓) = (𝐹𝑓))
5752, 56breq12d 4773 . . . . . . . 8 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → ((((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ (𝐹𝑑)𝑅(𝐹𝑓)))
5857notbid 307 . . . . . . 7 (((𝜑𝑓𝑎) ∧ 𝑑𝑎) → (¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ¬ (𝐹𝑑)𝑅(𝐹𝑓)))
5958ralbidva 3087 . . . . . 6 ((𝜑𝑓𝑎) → (∀𝑑𝑎 ¬ (((𝐹𝐴) ↾ 𝑎)‘𝑑)𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓)))
6046, 59bitrd 268 . . . . 5 ((𝜑𝑓𝑎) → (∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓)))
6160rexbidva 3151 . . . 4 (𝜑 → (∃𝑓𝑎𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅(((𝐹𝐴) ↾ 𝑎)‘𝑓) ↔ ∃𝑓𝑎𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓)))
6239, 61bitrd 268 . . 3 (𝜑 → (∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 ↔ ∃𝑓𝑎𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓)))
633inex1 4907 . . . . . . 7 (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ∈ V
6463a1i 11 . . . . . 6 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ∈ V)
6514sselda 3709 . . . . . . . 8 ((𝜑𝑓𝑎) → 𝑓𝐴)
66 fnwe2.su . . . . . . . . . 10 (𝑧 = (𝐹𝑥) → 𝑆 = 𝑈)
67 fnwe2.t . . . . . . . . . 10 𝑇 = {⟨𝑥, 𝑦⟩ ∣ ((𝐹𝑥)𝑅(𝐹𝑦) ∨ ((𝐹𝑥) = (𝐹𝑦) ∧ 𝑥𝑈𝑦))}
68 fnwe2.s . . . . . . . . . 10 ((𝜑𝑥𝐴) → 𝑈 We {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑥)})
6966, 67, 68fnwe2lem1 38039 . . . . . . . . 9 ((𝜑𝑓𝐴) → (𝐹𝑓) / 𝑧𝑆 We {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
70 wefr 5208 . . . . . . . . 9 ((𝐹𝑓) / 𝑧𝑆 We {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)} → (𝐹𝑓) / 𝑧𝑆 Fr {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
7169, 70syl 17 . . . . . . . 8 ((𝜑𝑓𝐴) → (𝐹𝑓) / 𝑧𝑆 Fr {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
7265, 71syldan 488 . . . . . . 7 ((𝜑𝑓𝑎) → (𝐹𝑓) / 𝑧𝑆 Fr {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
7372adantrr 755 . . . . . 6 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝐹𝑓) / 𝑧𝑆 Fr {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
74 inss2 3942 . . . . . . 7 (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ⊆ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}
7574a1i 11 . . . . . 6 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ⊆ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
76 simprl 811 . . . . . . . 8 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → 𝑓𝑎)
7765adantrr 755 . . . . . . . . 9 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → 𝑓𝐴)
78 eqidd 2725 . . . . . . . . 9 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝐹𝑓) = (𝐹𝑓))
79 fveq2 6304 . . . . . . . . . . 11 (𝑦 = 𝑓 → (𝐹𝑦) = (𝐹𝑓))
8079eqeq1d 2726 . . . . . . . . . 10 (𝑦 = 𝑓 → ((𝐹𝑦) = (𝐹𝑓) ↔ (𝐹𝑓) = (𝐹𝑓)))
8180elrab 3469 . . . . . . . . 9 (𝑓 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)} ↔ (𝑓𝐴 ∧ (𝐹𝑓) = (𝐹𝑓)))
8277, 78, 81sylanbrc 701 . . . . . . . 8 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → 𝑓 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})
8376, 82elind 3906 . . . . . . 7 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → 𝑓 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}))
84 ne0i 4029 . . . . . . 7 (𝑓 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) → (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ≠ ∅)
8583, 84syl 17 . . . . . 6 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ≠ ∅)
86 fri 5180 . . . . . 6 ((((𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ∈ V ∧ (𝐹𝑓) / 𝑧𝑆 Fr {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ∧ ((𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ⊆ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)} ∧ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ≠ ∅)) → ∃𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)
8764, 73, 75, 85, 86syl22anc 1440 . . . . 5 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → ∃𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)
88 elin 3904 . . . . . . . 8 (𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑒𝑎𝑒 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}))
89 fveq2 6304 . . . . . . . . . . 11 (𝑦 = 𝑒 → (𝐹𝑦) = (𝐹𝑒))
9089eqeq1d 2726 . . . . . . . . . 10 (𝑦 = 𝑒 → ((𝐹𝑦) = (𝐹𝑓) ↔ (𝐹𝑒) = (𝐹𝑓)))
9190elrab 3469 . . . . . . . . 9 (𝑒 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)} ↔ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))
9291anbi2i 732 . . . . . . . 8 ((𝑒𝑎𝑒 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓))))
9388, 92bitri 264 . . . . . . 7 (𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓))))
94 elin 3904 . . . . . . . . . . . . 13 (𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑔𝑎𝑔 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}))
95 fveq2 6304 . . . . . . . . . . . . . . . 16 (𝑦 = 𝑔 → (𝐹𝑦) = (𝐹𝑔))
9695eqeq1d 2726 . . . . . . . . . . . . . . 15 (𝑦 = 𝑔 → ((𝐹𝑦) = (𝐹𝑓) ↔ (𝐹𝑔) = (𝐹𝑓)))
9796elrab 3469 . . . . . . . . . . . . . 14 (𝑔 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)} ↔ (𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)))
9897anbi2i 732 . . . . . . . . . . . . 13 ((𝑔𝑎𝑔 ∈ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑔𝑎 ∧ (𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓))))
9994, 98bitri 264 . . . . . . . . . . . 12 (𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ↔ (𝑔𝑎 ∧ (𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓))))
10099imbi1i 338 . . . . . . . . . . 11 ((𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒) ↔ ((𝑔𝑎 ∧ (𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓))) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒))
101 impexp 461 . . . . . . . . . . 11 (((𝑔𝑎 ∧ (𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓))) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒) ↔ (𝑔𝑎 → ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)))
102100, 101bitri 264 . . . . . . . . . 10 ((𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒) ↔ (𝑔𝑎 → ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)))
103102ralbii2 3080 . . . . . . . . 9 (∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 ↔ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒))
104 simplrl 819 . . . . . . . . . . 11 ((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) → 𝑒𝑎)
105 simpr 479 . . . . . . . . . . . . . . . 16 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → 𝑐𝑎)
106 simplrr 820 . . . . . . . . . . . . . . . . 17 (((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) → ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))
107106ad2antrr 764 . . . . . . . . . . . . . . . 16 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))
108 fveq2 6304 . . . . . . . . . . . . . . . . . . 19 (𝑑 = 𝑐 → (𝐹𝑑) = (𝐹𝑐))
109108breq1d 4770 . . . . . . . . . . . . . . . . . 18 (𝑑 = 𝑐 → ((𝐹𝑑)𝑅(𝐹𝑓) ↔ (𝐹𝑐)𝑅(𝐹𝑓)))
110109notbid 307 . . . . . . . . . . . . . . . . 17 (𝑑 = 𝑐 → (¬ (𝐹𝑑)𝑅(𝐹𝑓) ↔ ¬ (𝐹𝑐)𝑅(𝐹𝑓)))
111110rspcva 3411 . . . . . . . . . . . . . . . 16 ((𝑐𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓)) → ¬ (𝐹𝑐)𝑅(𝐹𝑓))
112105, 107, 111syl2anc 696 . . . . . . . . . . . . . . 15 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ¬ (𝐹𝑐)𝑅(𝐹𝑓))
113 simprrr 824 . . . . . . . . . . . . . . . . 17 (((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) → (𝐹𝑒) = (𝐹𝑓))
114113ad2antrr 764 . . . . . . . . . . . . . . . 16 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → (𝐹𝑒) = (𝐹𝑓))
115114breq2d 4772 . . . . . . . . . . . . . . 15 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ((𝐹𝑐)𝑅(𝐹𝑒) ↔ (𝐹𝑐)𝑅(𝐹𝑓)))
116112, 115mtbird 314 . . . . . . . . . . . . . 14 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ¬ (𝐹𝑐)𝑅(𝐹𝑒))
11714ad3antrrr 768 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) → 𝑎𝐴)
118117sselda 3709 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → 𝑐𝐴)
119118adantrr 755 . . . . . . . . . . . . . . . . . 18 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → 𝑐𝐴)
120 simprr 813 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝐹𝑐) = (𝐹𝑒))
121113ad2antrr 764 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝐹𝑒) = (𝐹𝑓))
122120, 121eqtrd 2758 . . . . . . . . . . . . . . . . . 18 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝐹𝑐) = (𝐹𝑓))
123 simprl 811 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → 𝑐𝑎)
124 simplr 809 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒))
125 eleq1 2791 . . . . . . . . . . . . . . . . . . . . . 22 (𝑔 = 𝑐 → (𝑔𝐴𝑐𝐴))
126 fveq2 6304 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑔 = 𝑐 → (𝐹𝑔) = (𝐹𝑐))
127126eqeq1d 2726 . . . . . . . . . . . . . . . . . . . . . 22 (𝑔 = 𝑐 → ((𝐹𝑔) = (𝐹𝑓) ↔ (𝐹𝑐) = (𝐹𝑓)))
128125, 127anbi12d 749 . . . . . . . . . . . . . . . . . . . . 21 (𝑔 = 𝑐 → ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) ↔ (𝑐𝐴 ∧ (𝐹𝑐) = (𝐹𝑓))))
129 breq1 4763 . . . . . . . . . . . . . . . . . . . . . 22 (𝑔 = 𝑐 → (𝑔(𝐹𝑓) / 𝑧𝑆𝑒𝑐(𝐹𝑓) / 𝑧𝑆𝑒))
130129notbid 307 . . . . . . . . . . . . . . . . . . . . 21 (𝑔 = 𝑐 → (¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 ↔ ¬ 𝑐(𝐹𝑓) / 𝑧𝑆𝑒))
131128, 130imbi12d 333 . . . . . . . . . . . . . . . . . . . 20 (𝑔 = 𝑐 → (((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒) ↔ ((𝑐𝐴 ∧ (𝐹𝑐) = (𝐹𝑓)) → ¬ 𝑐(𝐹𝑓) / 𝑧𝑆𝑒)))
132131rspcva 3411 . . . . . . . . . . . . . . . . . . 19 ((𝑐𝑎 ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) → ((𝑐𝐴 ∧ (𝐹𝑐) = (𝐹𝑓)) → ¬ 𝑐(𝐹𝑓) / 𝑧𝑆𝑒))
133123, 124, 132syl2anc 696 . . . . . . . . . . . . . . . . . 18 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → ((𝑐𝐴 ∧ (𝐹𝑐) = (𝐹𝑓)) → ¬ 𝑐(𝐹𝑓) / 𝑧𝑆𝑒))
134119, 122, 133mp2and 717 . . . . . . . . . . . . . . . . 17 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → ¬ 𝑐(𝐹𝑓) / 𝑧𝑆𝑒)
135120, 121eqtr2d 2759 . . . . . . . . . . . . . . . . . . 19 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝐹𝑓) = (𝐹𝑐))
136135csbeq1d 3646 . . . . . . . . . . . . . . . . . 18 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝐹𝑓) / 𝑧𝑆 = (𝐹𝑐) / 𝑧𝑆)
137136breqd 4771 . . . . . . . . . . . . . . . . 17 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → (𝑐(𝐹𝑓) / 𝑧𝑆𝑒𝑐(𝐹𝑐) / 𝑧𝑆𝑒))
138134, 137mtbid 313 . . . . . . . . . . . . . . . 16 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ (𝑐𝑎 ∧ (𝐹𝑐) = (𝐹𝑒))) → ¬ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒)
139138expr 644 . . . . . . . . . . . . . . 15 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ((𝐹𝑐) = (𝐹𝑒) → ¬ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒))
140 imnan 437 . . . . . . . . . . . . . . 15 (((𝐹𝑐) = (𝐹𝑒) → ¬ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒) ↔ ¬ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒))
141139, 140sylib 208 . . . . . . . . . . . . . 14 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ¬ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒))
142 ioran 512 . . . . . . . . . . . . . 14 (¬ ((𝐹𝑐)𝑅(𝐹𝑒) ∨ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒)) ↔ (¬ (𝐹𝑐)𝑅(𝐹𝑒) ∧ ¬ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒)))
143116, 141, 142sylanbrc 701 . . . . . . . . . . . . 13 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ¬ ((𝐹𝑐)𝑅(𝐹𝑒) ∨ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒)))
14466, 67fnwe2val 38038 . . . . . . . . . . . . 13 (𝑐𝑇𝑒 ↔ ((𝐹𝑐)𝑅(𝐹𝑒) ∨ ((𝐹𝑐) = (𝐹𝑒) ∧ 𝑐(𝐹𝑐) / 𝑧𝑆𝑒)))
145143, 144sylnibr 318 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) ∧ 𝑐𝑎) → ¬ 𝑐𝑇𝑒)
146145ralrimiva 3068 . . . . . . . . . . 11 ((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) → ∀𝑐𝑎 ¬ 𝑐𝑇𝑒)
147 breq2 4764 . . . . . . . . . . . . . 14 (𝑏 = 𝑒 → (𝑐𝑇𝑏𝑐𝑇𝑒))
148147notbid 307 . . . . . . . . . . . . 13 (𝑏 = 𝑒 → (¬ 𝑐𝑇𝑏 ↔ ¬ 𝑐𝑇𝑒))
149148ralbidv 3088 . . . . . . . . . . . 12 (𝑏 = 𝑒 → (∀𝑐𝑎 ¬ 𝑐𝑇𝑏 ↔ ∀𝑐𝑎 ¬ 𝑐𝑇𝑒))
150149rspcev 3413 . . . . . . . . . . 11 ((𝑒𝑎 ∧ ∀𝑐𝑎 ¬ 𝑐𝑇𝑒) → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)
151104, 146, 150syl2anc 696 . . . . . . . . . 10 ((((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) ∧ ∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒)) → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)
152151ex 449 . . . . . . . . 9 (((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) → (∀𝑔𝑎 ((𝑔𝐴 ∧ (𝐹𝑔) = (𝐹𝑓)) → ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒) → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏))
153103, 152syl5bi 232 . . . . . . . 8 (((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) ∧ (𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓)))) → (∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏))
154153ex 449 . . . . . . 7 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → ((𝑒𝑎 ∧ (𝑒𝐴 ∧ (𝐹𝑒) = (𝐹𝑓))) → (∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)))
15593, 154syl5bi 232 . . . . . 6 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) → (∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)))
156155rexlimdv 3132 . . . . 5 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → (∃𝑒 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)})∀𝑔 ∈ (𝑎 ∩ {𝑦𝐴 ∣ (𝐹𝑦) = (𝐹𝑓)}) ¬ 𝑔(𝐹𝑓) / 𝑧𝑆𝑒 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏))
15787, 156mpd 15 . . . 4 ((𝜑 ∧ (𝑓𝑎 ∧ ∀𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓))) → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)
158157rexlimdvaa 3134 . . 3 (𝜑 → (∃𝑓𝑎𝑑𝑎 ¬ (𝐹𝑑)𝑅(𝐹𝑓) → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏))
15962, 158sylbid 230 . 2 (𝜑 → (∃𝑑 ∈ ((𝐹𝐴) “ 𝑎)∀𝑒 ∈ ((𝐹𝐴) “ 𝑎) ¬ 𝑒𝑅𝑑 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏))
16027, 159mpd 15 1 (𝜑 → ∃𝑏𝑎𝑐𝑎 ¬ 𝑐𝑇𝑏)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wo 382  wa 383   = wceq 1596  wcel 2103  wne 2896  wral 3014  wrex 3015  {crab 3018  Vcvv 3304  csb 3639  cin 3679  wss 3680  c0 4023   class class class wbr 4760  {copab 4820   Fr wfr 5174   We wwe 5176  dom cdm 5218  ran crn 5219  cres 5220  cima 5221  Fun wfun 5995   Fn wfn 5996  wf 5997  cfv 6001
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1835  ax-4 1850  ax-5 1952  ax-6 2018  ax-7 2054  ax-9 2112  ax-10 2132  ax-11 2147  ax-12 2160  ax-13 2355  ax-ext 2704  ax-rep 4879  ax-sep 4889  ax-nul 4897  ax-pr 5011
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1599  df-ex 1818  df-nf 1823  df-sb 2011  df-eu 2575  df-mo 2576  df-clab 2711  df-cleq 2717  df-clel 2720  df-nfc 2855  df-ne 2897  df-ral 3019  df-rex 3020  df-rab 3023  df-v 3306  df-sbc 3542  df-csb 3640  df-dif 3683  df-un 3685  df-in 3687  df-ss 3694  df-nul 4024  df-if 4195  df-sn 4286  df-pr 4288  df-op 4292  df-uni 4545  df-br 4761  df-opab 4821  df-mpt 4838  df-id 5128  df-po 5139  df-so 5140  df-fr 5177  df-we 5179  df-xp 5224  df-rel 5225  df-cnv 5226  df-co 5227  df-dm 5228  df-rn 5229  df-res 5230  df-ima 5231  df-iota 5964  df-fun 6003  df-fn 6004  df-f 6005  df-fv 6009
This theorem is referenced by:  fnwe2  38042
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