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Theorem unblimceq0 32167
Description: If 𝐹 is unbounded near 𝐴 it has no limit at 𝐴. (Contributed by Asger C. Ipsen, 12-May-2021.)
Hypotheses
Ref Expression
unblimceq0.0 (𝜑𝑆 ⊆ ℂ)
unblimceq0.1 (𝜑𝐹:𝑆⟶ℂ)
unblimceq0.2 (𝜑𝐴 ∈ ℂ)
unblimceq0.3 (𝜑 → ∀𝑏 ∈ ℝ+𝑑 ∈ ℝ+𝑥𝑆 ((abs‘(𝑥𝐴)) < 𝑑𝑏 ≤ (abs‘(𝐹𝑥))))
Assertion
Ref Expression
unblimceq0 (𝜑 → (𝐹 lim 𝐴) = ∅)
Distinct variable groups:   𝐴,𝑏,𝑑,𝑥   𝐹,𝑏,𝑑,𝑥   𝑆,𝑏,𝑑,𝑥   𝜑,𝑏,𝑑,𝑥

Proof of Theorem unblimceq0
Dummy variables 𝑎 𝑐 𝑦 𝑧 𝑒 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 1rp 11787 . . . . . . . . 9 1 ∈ ℝ+
21a1i 11 . . . . . . . 8 ((𝜑𝑦 ∈ ℂ) → 1 ∈ ℝ+)
3 breq2 4622 . . . . . . . . . . . . 13 (𝑒 = 1 → ((abs‘((𝐹𝑧) − 𝑦)) < 𝑒 ↔ (abs‘((𝐹𝑧) − 𝑦)) < 1))
43imbi2d 330 . . . . . . . . . . . 12 (𝑒 = 1 → (((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
54ralbidv 2981 . . . . . . . . . . 11 (𝑒 = 1 → (∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
65rexbidv 3046 . . . . . . . . . 10 (𝑒 = 1 → (∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
76notbid 308 . . . . . . . . 9 (𝑒 = 1 → (¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
87adantl 482 . . . . . . . 8 (((𝜑𝑦 ∈ ℂ) ∧ 𝑒 = 1) → (¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
9 simprr1 1107 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑧𝐴)
10 simprr2 1108 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘(𝑧𝐴)) < 𝑐)
119, 10jca 554 . . . . . . . . . . . . . 14 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐))
12 1red 10006 . . . . . . . . . . . . . . . . 17 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 1 ∈ ℝ)
1312adantr 481 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ∈ ℝ)
14 unblimceq0.1 . . . . . . . . . . . . . . . . . . . . 21 (𝜑𝐹:𝑆⟶ℂ)
1514ad2antrr 761 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝐹:𝑆⟶ℂ)
1615adantr 481 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝐹:𝑆⟶ℂ)
17 simprl 793 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑧𝑆)
1816, 17ffvelrnd 6321 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (𝐹𝑧) ∈ ℂ)
1918abscld 14116 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘(𝐹𝑧)) ∈ ℝ)
20 simplr 791 . . . . . . . . . . . . . . . . . . 19 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝑦 ∈ ℂ)
2120abscld 14116 . . . . . . . . . . . . . . . . . 18 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (abs‘𝑦) ∈ ℝ)
2221adantr 481 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘𝑦) ∈ ℝ)
2319, 22resubcld 10409 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((abs‘(𝐹𝑧)) − (abs‘𝑦)) ∈ ℝ)
2420adantr 481 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑦 ∈ ℂ)
2518, 24subcld 10343 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((𝐹𝑧) − 𝑦) ∈ ℂ)
2625abscld 14116 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘((𝐹𝑧) − 𝑦)) ∈ ℝ)
27 1cnd 10007 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ∈ ℂ)
2822recnd 10019 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘𝑦) ∈ ℂ)
2927, 28pncand 10344 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((1 + (abs‘𝑦)) − (abs‘𝑦)) = 1)
3029eqcomd 2627 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 = ((1 + (abs‘𝑦)) − (abs‘𝑦)))
31 simprr3 1109 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))
3212, 21readdcld 10020 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (1 + (abs‘𝑦)) ∈ ℝ)
3332adantr 481 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (1 + (abs‘𝑦)) ∈ ℝ)
3433, 19, 22lesub1d 10585 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)) ↔ ((1 + (abs‘𝑦)) − (abs‘𝑦)) ≤ ((abs‘(𝐹𝑧)) − (abs‘𝑦))))
3531, 34mpbid 222 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((1 + (abs‘𝑦)) − (abs‘𝑦)) ≤ ((abs‘(𝐹𝑧)) − (abs‘𝑦)))
3630, 35eqbrtrd 4640 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ≤ ((abs‘(𝐹𝑧)) − (abs‘𝑦)))
3718, 24abs2difd 14137 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((abs‘(𝐹𝑧)) − (abs‘𝑦)) ≤ (abs‘((𝐹𝑧) − 𝑦)))
3813, 23, 26, 36, 37letrd 10145 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ≤ (abs‘((𝐹𝑧) − 𝑦)))
3913, 26lenltd 10134 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (1 ≤ (abs‘((𝐹𝑧) − 𝑦)) ↔ ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1))
4038, 39mpbid 222 . . . . . . . . . . . . . 14 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1)
4111, 40jca 554 . . . . . . . . . . . . 13 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) ∧ ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1))
42 pm4.61 442 . . . . . . . . . . . . 13 (¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1) ↔ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) ∧ ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1))
4341, 42sylibr 224 . . . . . . . . . . . 12 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
44 breq2 4622 . . . . . . . . . . . . . . 15 (𝑑 = 𝑐 → ((abs‘(𝑧𝐴)) < 𝑑 ↔ (abs‘(𝑧𝐴)) < 𝑐))
45443anbi2d 1401 . . . . . . . . . . . . . 14 (𝑑 = 𝑐 → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))) ↔ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
4645rexbidv 3046 . . . . . . . . . . . . 13 (𝑑 = 𝑐 → (∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))) ↔ ∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
47 breq1 4621 . . . . . . . . . . . . . . . . 17 (𝑎 = (1 + (abs‘𝑦)) → (𝑎 ≤ (abs‘(𝐹𝑧)) ↔ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
48473anbi3d 1402 . . . . . . . . . . . . . . . 16 (𝑎 = (1 + (abs‘𝑦)) → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))) ↔ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
4948rexbidv 3046 . . . . . . . . . . . . . . 15 (𝑎 = (1 + (abs‘𝑦)) → (∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))) ↔ ∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
5049ralbidv 2981 . . . . . . . . . . . . . 14 (𝑎 = (1 + (abs‘𝑦)) → (∀𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))) ↔ ∀𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
51 unblimceq0.0 . . . . . . . . . . . . . . . 16 (𝜑𝑆 ⊆ ℂ)
52 unblimceq0.2 . . . . . . . . . . . . . . . 16 (𝜑𝐴 ∈ ℂ)
53 unblimceq0.3 . . . . . . . . . . . . . . . 16 (𝜑 → ∀𝑏 ∈ ℝ+𝑑 ∈ ℝ+𝑥𝑆 ((abs‘(𝑥𝐴)) < 𝑑𝑏 ≤ (abs‘(𝐹𝑥))))
5451, 14, 52, 53unblimceq0lem 32166 . . . . . . . . . . . . . . 15 (𝜑 → ∀𝑎 ∈ ℝ+𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))))
5554ad2antrr 761 . . . . . . . . . . . . . 14 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∀𝑎 ∈ ℝ+𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))))
56 0lt1 10501 . . . . . . . . . . . . . . . . 17 0 < 1
5756a1i 11 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 < 1)
5820absge0d 14124 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 ≤ (abs‘𝑦))
5912, 21, 57, 58addgtge0d 32165 . . . . . . . . . . . . . . 15 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 < (1 + (abs‘𝑦)))
6032, 59elrpd 11820 . . . . . . . . . . . . . 14 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (1 + (abs‘𝑦)) ∈ ℝ+)
6150, 55, 60rspcdva 3304 . . . . . . . . . . . . 13 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∀𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
62 simpr 477 . . . . . . . . . . . . 13 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝑐 ∈ ℝ+)
6346, 61, 62rspcdva 3304 . . . . . . . . . . . 12 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
6443, 63reximddv 3013 . . . . . . . . . . 11 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∃𝑧𝑆 ¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
65 rexnal 2990 . . . . . . . . . . 11 (∃𝑧𝑆 ¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1) ↔ ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
6664, 65sylib 208 . . . . . . . . . 10 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
6766ralrimiva 2961 . . . . . . . . 9 ((𝜑𝑦 ∈ ℂ) → ∀𝑐 ∈ ℝ+ ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
68 ralnex 2987 . . . . . . . . 9 (∀𝑐 ∈ ℝ+ ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1) ↔ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
6967, 68sylib 208 . . . . . . . 8 ((𝜑𝑦 ∈ ℂ) → ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
702, 8, 69rspcedvd 3305 . . . . . . 7 ((𝜑𝑦 ∈ ℂ) → ∃𝑒 ∈ ℝ+ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))
71 rexnal 2990 . . . . . . 7 (∃𝑒 ∈ ℝ+ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))
7270, 71sylib 208 . . . . . 6 ((𝜑𝑦 ∈ ℂ) → ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))
7372ex 450 . . . . 5 (𝜑 → (𝑦 ∈ ℂ → ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)))
74 imnan 438 . . . . 5 ((𝑦 ∈ ℂ → ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)) ↔ ¬ (𝑦 ∈ ℂ ∧ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)))
7573, 74sylib 208 . . . 4 (𝜑 → ¬ (𝑦 ∈ ℂ ∧ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)))
7614, 51, 52ellimc3 23562 . . . 4 (𝜑 → (𝑦 ∈ (𝐹 lim 𝐴) ↔ (𝑦 ∈ ℂ ∧ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))))
7775, 76mtbird 315 . . 3 (𝜑 → ¬ 𝑦 ∈ (𝐹 lim 𝐴))
7877alrimiv 1852 . 2 (𝜑 → ∀𝑦 ¬ 𝑦 ∈ (𝐹 lim 𝐴))
79 eq0 3910 . 2 ((𝐹 lim 𝐴) = ∅ ↔ ∀𝑦 ¬ 𝑦 ∈ (𝐹 lim 𝐴))
8078, 79sylibr 224 1 (𝜑 → (𝐹 lim 𝐴) = ∅)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 384  w3a 1036  wal 1478   = wceq 1480  wcel 1987  wne 2790  wral 2907  wrex 2908  wss 3559  c0 3896   class class class wbr 4618  wf 5848  cfv 5852  (class class class)co 6610  cc 9885  cr 9886  0cc0 9887  1c1 9888   + caddc 9890   < clt 10025  cle 10026  cmin 10217  +crp 11783  abscabs 13915   lim climc 23545
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-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909  ax-cnex 9943  ax-resscn 9944  ax-1cn 9945  ax-icn 9946  ax-addcl 9947  ax-addrcl 9948  ax-mulcl 9949  ax-mulrcl 9950  ax-mulcom 9951  ax-addass 9952  ax-mulass 9953  ax-distr 9954  ax-i2m1 9955  ax-1ne0 9956  ax-1rid 9957  ax-rnegex 9958  ax-rrecex 9959  ax-cnre 9960  ax-pre-lttri 9961  ax-pre-lttrn 9962  ax-pre-ltadd 9963  ax-pre-mulgt0 9964  ax-pre-sup 9965
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-nel 2894  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  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-int 4446  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5644  df-ord 5690  df-on 5691  df-lim 5692  df-suc 5693  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-riota 6571  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-om 7020  df-1st 7120  df-2nd 7121  df-wrecs 7359  df-recs 7420  df-rdg 7458  df-1o 7512  df-oadd 7516  df-er 7694  df-map 7811  df-pm 7812  df-en 7907  df-dom 7908  df-sdom 7909  df-fin 7910  df-fi 8268  df-sup 8299  df-inf 8300  df-pnf 10027  df-mnf 10028  df-xr 10029  df-ltxr 10030  df-le 10031  df-sub 10219  df-neg 10220  df-div 10636  df-nn 10972  df-2 11030  df-3 11031  df-4 11032  df-5 11033  df-6 11034  df-7 11035  df-8 11036  df-9 11037  df-n0 11244  df-z 11329  df-dec 11445  df-uz 11639  df-q 11740  df-rp 11784  df-xneg 11897  df-xadd 11898  df-xmul 11899  df-fz 12276  df-seq 12749  df-exp 12808  df-cj 13780  df-re 13781  df-im 13782  df-sqrt 13916  df-abs 13917  df-struct 15790  df-ndx 15791  df-slot 15792  df-base 15793  df-plusg 15882  df-mulr 15883  df-starv 15884  df-tset 15888  df-ple 15889  df-ds 15892  df-unif 15893  df-rest 16011  df-topn 16012  df-topgen 16032  df-psmet 19666  df-xmet 19667  df-met 19668  df-bl 19669  df-mopn 19670  df-cnfld 19675  df-top 20627  df-topon 20644  df-topsp 20657  df-bases 20670  df-cnp 20951  df-xms 22044  df-ms 22045  df-limc 23549
This theorem is referenced by:  unbdqndv1  32168
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