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Theorem i1fmullem 23267
 Description: Decompose the preimage of a product. (Contributed by Mario Carneiro, 19-Jun-2014.)
Hypotheses
Ref Expression
Assertion
Ref Expression
i1fmullem ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝐹𝑓 · 𝐺) “ {𝐴}) = 𝑦 ∈ (ran 𝐺 ∖ {0})((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})))
Distinct variable groups:   𝑦,𝐴   𝑦,𝐹   𝑦,𝐺   𝜑,𝑦

Proof of Theorem i1fmullem
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 i1fadd.1 . . . . . . . . 9 (𝜑𝐹 ∈ dom ∫1)
2 i1ff 23249 . . . . . . . . 9 (𝐹 ∈ dom ∫1𝐹:ℝ⟶ℝ)
31, 2syl 17 . . . . . . . 8 (𝜑𝐹:ℝ⟶ℝ)
4 ffn 5958 . . . . . . . 8 (𝐹:ℝ⟶ℝ → 𝐹 Fn ℝ)
53, 4syl 17 . . . . . . 7 (𝜑𝐹 Fn ℝ)
6 i1fadd.2 . . . . . . . . 9 (𝜑𝐺 ∈ dom ∫1)
7 i1ff 23249 . . . . . . . . 9 (𝐺 ∈ dom ∫1𝐺:ℝ⟶ℝ)
86, 7syl 17 . . . . . . . 8 (𝜑𝐺:ℝ⟶ℝ)
9 ffn 5958 . . . . . . . 8 (𝐺:ℝ⟶ℝ → 𝐺 Fn ℝ)
108, 9syl 17 . . . . . . 7 (𝜑𝐺 Fn ℝ)
11 reex 9906 . . . . . . . 8 ℝ ∈ V
1211a1i 11 . . . . . . 7 (𝜑 → ℝ ∈ V)
13 inidm 3784 . . . . . . 7 (ℝ ∩ ℝ) = ℝ
145, 10, 12, 12, 13offn 6806 . . . . . 6 (𝜑 → (𝐹𝑓 · 𝐺) Fn ℝ)
1514adantr 480 . . . . 5 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝐹𝑓 · 𝐺) Fn ℝ)
16 fniniseg 6246 . . . . 5 ((𝐹𝑓 · 𝐺) Fn ℝ → (𝑧 ∈ ((𝐹𝑓 · 𝐺) “ {𝐴}) ↔ (𝑧 ∈ ℝ ∧ ((𝐹𝑓 · 𝐺)‘𝑧) = 𝐴)))
1715, 16syl 17 . . . 4 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ ((𝐹𝑓 · 𝐺) “ {𝐴}) ↔ (𝑧 ∈ ℝ ∧ ((𝐹𝑓 · 𝐺)‘𝑧) = 𝐴)))
185adantr 480 . . . . . . 7 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → 𝐹 Fn ℝ)
1910adantr 480 . . . . . . 7 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → 𝐺 Fn ℝ)
2011a1i 11 . . . . . . 7 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ℝ ∈ V)
21 eqidd 2611 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑧 ∈ ℝ) → (𝐹𝑧) = (𝐹𝑧))
22 eqidd 2611 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑧 ∈ ℝ) → (𝐺𝑧) = (𝐺𝑧))
2318, 19, 20, 20, 13, 21, 22ofval 6804 . . . . . 6 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑧 ∈ ℝ) → ((𝐹𝑓 · 𝐺)‘𝑧) = ((𝐹𝑧) · (𝐺𝑧)))
2423eqeq1d 2612 . . . . 5 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑧 ∈ ℝ) → (((𝐹𝑓 · 𝐺)‘𝑧) = 𝐴 ↔ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴))
2524pm5.32da 671 . . . 4 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝑧 ∈ ℝ ∧ ((𝐹𝑓 · 𝐺)‘𝑧) = 𝐴) ↔ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)))
2610ad2antrr 758 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝐺 Fn ℝ)
27 simprl 790 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝑧 ∈ ℝ)
28 fnfvelrn 6264 . . . . . . . . 9 ((𝐺 Fn ℝ ∧ 𝑧 ∈ ℝ) → (𝐺𝑧) ∈ ran 𝐺)
2926, 27, 28syl2anc 691 . . . . . . . 8 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) ∈ ran 𝐺)
30 eldifsni 4261 . . . . . . . . . . 11 (𝐴 ∈ (ℂ ∖ {0}) → 𝐴 ≠ 0)
3130ad2antlr 759 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝐴 ≠ 0)
32 simprr 792 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)
333ad2antrr 758 . . . . . . . . . . . . 13 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝐹:ℝ⟶ℝ)
3433, 27ffvelrnd 6268 . . . . . . . . . . . 12 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐹𝑧) ∈ ℝ)
3534recnd 9947 . . . . . . . . . . 11 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐹𝑧) ∈ ℂ)
3635mul01d 10114 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → ((𝐹𝑧) · 0) = 0)
3731, 32, 363netr4d 2859 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → ((𝐹𝑧) · (𝐺𝑧)) ≠ ((𝐹𝑧) · 0))
38 oveq2 6557 . . . . . . . . . 10 ((𝐺𝑧) = 0 → ((𝐹𝑧) · (𝐺𝑧)) = ((𝐹𝑧) · 0))
3938necon3i 2814 . . . . . . . . 9 (((𝐹𝑧) · (𝐺𝑧)) ≠ ((𝐹𝑧) · 0) → (𝐺𝑧) ≠ 0)
4037, 39syl 17 . . . . . . . 8 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) ≠ 0)
41 eldifsn 4260 . . . . . . . 8 ((𝐺𝑧) ∈ (ran 𝐺 ∖ {0}) ↔ ((𝐺𝑧) ∈ ran 𝐺 ∧ (𝐺𝑧) ≠ 0))
4229, 40, 41sylanbrc 695 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) ∈ (ran 𝐺 ∖ {0}))
438ad2antrr 758 . . . . . . . . . . . . 13 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝐺:ℝ⟶ℝ)
4443, 27ffvelrnd 6268 . . . . . . . . . . . 12 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) ∈ ℝ)
4544recnd 9947 . . . . . . . . . . 11 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) ∈ ℂ)
4635, 45, 40divcan4d 10686 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (((𝐹𝑧) · (𝐺𝑧)) / (𝐺𝑧)) = (𝐹𝑧))
4732oveq1d 6564 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (((𝐹𝑧) · (𝐺𝑧)) / (𝐺𝑧)) = (𝐴 / (𝐺𝑧)))
4846, 47eqtr3d 2646 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐹𝑧) = (𝐴 / (𝐺𝑧)))
4933, 4syl 17 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝐹 Fn ℝ)
50 fniniseg 6246 . . . . . . . . . 10 (𝐹 Fn ℝ → (𝑧 ∈ (𝐹 “ {(𝐴 / (𝐺𝑧))}) ↔ (𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / (𝐺𝑧)))))
5149, 50syl 17 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝑧 ∈ (𝐹 “ {(𝐴 / (𝐺𝑧))}) ↔ (𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / (𝐺𝑧)))))
5227, 48, 51mpbir2and 959 . . . . . . . 8 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝑧 ∈ (𝐹 “ {(𝐴 / (𝐺𝑧))}))
53 eqidd 2611 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝐺𝑧) = (𝐺𝑧))
54 fniniseg 6246 . . . . . . . . . 10 (𝐺 Fn ℝ → (𝑧 ∈ (𝐺 “ {(𝐺𝑧)}) ↔ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = (𝐺𝑧))))
5526, 54syl 17 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → (𝑧 ∈ (𝐺 “ {(𝐺𝑧)}) ↔ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = (𝐺𝑧))))
5627, 53, 55mpbir2and 959 . . . . . . . 8 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝑧 ∈ (𝐺 “ {(𝐺𝑧)}))
57 elin 3758 . . . . . . . 8 (𝑧 ∈ ((𝐹 “ {(𝐴 / (𝐺𝑧))}) ∩ (𝐺 “ {(𝐺𝑧)})) ↔ (𝑧 ∈ (𝐹 “ {(𝐴 / (𝐺𝑧))}) ∧ 𝑧 ∈ (𝐺 “ {(𝐺𝑧)})))
5852, 56, 57sylanbrc 695 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → 𝑧 ∈ ((𝐹 “ {(𝐴 / (𝐺𝑧))}) ∩ (𝐺 “ {(𝐺𝑧)})))
59 oveq2 6557 . . . . . . . . . . . 12 (𝑦 = (𝐺𝑧) → (𝐴 / 𝑦) = (𝐴 / (𝐺𝑧)))
6059sneqd 4137 . . . . . . . . . . 11 (𝑦 = (𝐺𝑧) → {(𝐴 / 𝑦)} = {(𝐴 / (𝐺𝑧))})
6160imaeq2d 5385 . . . . . . . . . 10 (𝑦 = (𝐺𝑧) → (𝐹 “ {(𝐴 / 𝑦)}) = (𝐹 “ {(𝐴 / (𝐺𝑧))}))
62 sneq 4135 . . . . . . . . . . 11 (𝑦 = (𝐺𝑧) → {𝑦} = {(𝐺𝑧)})
6362imaeq2d 5385 . . . . . . . . . 10 (𝑦 = (𝐺𝑧) → (𝐺 “ {𝑦}) = (𝐺 “ {(𝐺𝑧)}))
6461, 63ineq12d 3777 . . . . . . . . 9 (𝑦 = (𝐺𝑧) → ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) = ((𝐹 “ {(𝐴 / (𝐺𝑧))}) ∩ (𝐺 “ {(𝐺𝑧)})))
6564eleq2d 2673 . . . . . . . 8 (𝑦 = (𝐺𝑧) → (𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) ↔ 𝑧 ∈ ((𝐹 “ {(𝐴 / (𝐺𝑧))}) ∩ (𝐺 “ {(𝐺𝑧)}))))
6665rspcev 3282 . . . . . . 7 (((𝐺𝑧) ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ((𝐹 “ {(𝐴 / (𝐺𝑧))}) ∩ (𝐺 “ {(𝐺𝑧)}))) → ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})))
6742, 58, 66syl2anc 691 . . . . . 6 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)) → ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})))
6867ex 449 . . . . 5 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴) → ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦}))))
69 fniniseg 6246 . . . . . . . . . . 11 (𝐹 Fn ℝ → (𝑧 ∈ (𝐹 “ {(𝐴 / 𝑦)}) ↔ (𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / 𝑦))))
7018, 69syl 17 . . . . . . . . . 10 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ (𝐹 “ {(𝐴 / 𝑦)}) ↔ (𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / 𝑦))))
71 fniniseg 6246 . . . . . . . . . . 11 (𝐺 Fn ℝ → (𝑧 ∈ (𝐺 “ {𝑦}) ↔ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = 𝑦)))
7219, 71syl 17 . . . . . . . . . 10 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ (𝐺 “ {𝑦}) ↔ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = 𝑦)))
7370, 72anbi12d 743 . . . . . . . . 9 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝑧 ∈ (𝐹 “ {(𝐴 / 𝑦)}) ∧ 𝑧 ∈ (𝐺 “ {𝑦})) ↔ ((𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / 𝑦)) ∧ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = 𝑦))))
74 elin 3758 . . . . . . . . 9 (𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) ↔ (𝑧 ∈ (𝐹 “ {(𝐴 / 𝑦)}) ∧ 𝑧 ∈ (𝐺 “ {𝑦})))
75 anandi 867 . . . . . . . . 9 ((𝑧 ∈ ℝ ∧ ((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦)) ↔ ((𝑧 ∈ ℝ ∧ (𝐹𝑧) = (𝐴 / 𝑦)) ∧ (𝑧 ∈ ℝ ∧ (𝐺𝑧) = 𝑦)))
7673, 74, 753bitr4g 302 . . . . . . . 8 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) ↔ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦))))
7776adantr 480 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑦 ∈ (ran 𝐺 ∖ {0})) → (𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) ↔ (𝑧 ∈ ℝ ∧ ((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦))))
78 eldifi 3694 . . . . . . . . . . . 12 (𝐴 ∈ (ℂ ∖ {0}) → 𝐴 ∈ ℂ)
7978ad2antlr 759 . . . . . . . . . . 11 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝐴 ∈ ℂ)
808ad2antrr 758 . . . . . . . . . . . . . 14 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝐺:ℝ⟶ℝ)
81 frn 5966 . . . . . . . . . . . . . 14 (𝐺:ℝ⟶ℝ → ran 𝐺 ⊆ ℝ)
8280, 81syl 17 . . . . . . . . . . . . 13 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → ran 𝐺 ⊆ ℝ)
83 simprl 790 . . . . . . . . . . . . . . 15 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝑦 ∈ (ran 𝐺 ∖ {0}))
84 eldifsn 4260 . . . . . . . . . . . . . . 15 (𝑦 ∈ (ran 𝐺 ∖ {0}) ↔ (𝑦 ∈ ran 𝐺𝑦 ≠ 0))
8583, 84sylib 207 . . . . . . . . . . . . . 14 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → (𝑦 ∈ ran 𝐺𝑦 ≠ 0))
8685simpld 474 . . . . . . . . . . . . 13 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝑦 ∈ ran 𝐺)
8782, 86sseldd 3569 . . . . . . . . . . . 12 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝑦 ∈ ℝ)
8887recnd 9947 . . . . . . . . . . 11 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝑦 ∈ ℂ)
8985simprd 478 . . . . . . . . . . 11 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → 𝑦 ≠ 0)
9079, 88, 89divcan1d 10681 . . . . . . . . . 10 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → ((𝐴 / 𝑦) · 𝑦) = 𝐴)
91 oveq12 6558 . . . . . . . . . . 11 (((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦) → ((𝐹𝑧) · (𝐺𝑧)) = ((𝐴 / 𝑦) · 𝑦))
9291eqeq1d 2612 . . . . . . . . . 10 (((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦) → (((𝐹𝑧) · (𝐺𝑧)) = 𝐴 ↔ ((𝐴 / 𝑦) · 𝑦) = 𝐴))
9390, 92syl5ibrcom 236 . . . . . . . . 9 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ (𝑦 ∈ (ran 𝐺 ∖ {0}) ∧ 𝑧 ∈ ℝ)) → (((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦) → ((𝐹𝑧) · (𝐺𝑧)) = 𝐴))
9493anassrs 678 . . . . . . . 8 ((((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑦 ∈ (ran 𝐺 ∖ {0})) ∧ 𝑧 ∈ ℝ) → (((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦) → ((𝐹𝑧) · (𝐺𝑧)) = 𝐴))
9594imdistanda 725 . . . . . . 7 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑦 ∈ (ran 𝐺 ∖ {0})) → ((𝑧 ∈ ℝ ∧ ((𝐹𝑧) = (𝐴 / 𝑦) ∧ (𝐺𝑧) = 𝑦)) → (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)))
9677, 95sylbid 229 . . . . . 6 (((𝜑𝐴 ∈ (ℂ ∖ {0})) ∧ 𝑦 ∈ (ran 𝐺 ∖ {0})) → (𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) → (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)))
9796rexlimdva 3013 . . . . 5 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) → (𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴)))
9868, 97impbid 201 . . . 4 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝑧 ∈ ℝ ∧ ((𝐹𝑧) · (𝐺𝑧)) = 𝐴) ↔ ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦}))))
9917, 25, 983bitrd 293 . . 3 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ ((𝐹𝑓 · 𝐺) “ {𝐴}) ↔ ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦}))))
100 eliun 4460 . . 3 (𝑧 𝑦 ∈ (ran 𝐺 ∖ {0})((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})) ↔ ∃𝑦 ∈ (ran 𝐺 ∖ {0})𝑧 ∈ ((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})))
10199, 100syl6bbr 277 . 2 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → (𝑧 ∈ ((𝐹𝑓 · 𝐺) “ {𝐴}) ↔ 𝑧 𝑦 ∈ (ran 𝐺 ∖ {0})((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦}))))
102101eqrdv 2608 1 ((𝜑𝐴 ∈ (ℂ ∖ {0})) → ((𝐹𝑓 · 𝐺) “ {𝐴}) = 𝑦 ∈ (ran 𝐺 ∖ {0})((𝐹 “ {(𝐴 / 𝑦)}) ∩ (𝐺 “ {𝑦})))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∃wrex 2897  Vcvv 3173   ∖ cdif 3537   ∩ cin 3539   ⊆ wss 3540  {csn 4125  ∪ ciun 4455  ◡ccnv 5037  dom cdm 5038  ran crn 5039   “ cima 5041   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549   ∘𝑓 cof 6793  ℂcc 9813  ℝcr 9814  0cc0 9815   · cmul 9820   / cdiv 10563  ∫1citg1 23190 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-po 4959  df-so 4960  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-sum 14265  df-itg1 23195 This theorem is referenced by:  i1fmul  23269
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