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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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