Mathbox for Asger C. Ipsen < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  unblimceq0 Structured version   Visualization version   GIF version

Theorem unblimceq0 31668
 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 11712 . . . . . . . . 9 1 ∈ ℝ+
21a1i 11 . . . . . . . 8 ((𝜑𝑦 ∈ ℂ) → 1 ∈ ℝ+)
3 breq2 4587 . . . . . . . . . . . . 13 (𝑒 = 1 → ((abs‘((𝐹𝑧) − 𝑦)) < 𝑒 ↔ (abs‘((𝐹𝑧) − 𝑦)) < 1))
43imbi2d 329 . . . . . . . . . . . 12 (𝑒 = 1 → (((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
54ralbidv 2969 . . . . . . . . . . 11 (𝑒 = 1 → (∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒) ↔ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1)))
65rexbidv 3034 . . . . . . . . . 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 307 . . . . . . . . 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 481 . . . . . . . 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 1102 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑧𝐴)
10 simprr2 1103 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘(𝑧𝐴)) < 𝑐)
119, 10jca 553 . . . . . . . . . . . . . 14 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐))
12 1red 9934 . . . . . . . . . . . . . . . . 17 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 1 ∈ ℝ)
1312adantr 480 . . . . . . . . . . . . . . . 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 758 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝐹:𝑆⟶ℂ)
1615adantr 480 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝐹:𝑆⟶ℂ)
17 simprl 790 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑧𝑆)
1816, 17ffvelrnd 6268 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (𝐹𝑧) ∈ ℂ)
1918abscld 14023 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘(𝐹𝑧)) ∈ ℝ)
20 simplr 788 . . . . . . . . . . . . . . . . . . 19 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝑦 ∈ ℂ)
2120abscld 14023 . . . . . . . . . . . . . . . . . 18 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (abs‘𝑦) ∈ ℝ)
2221adantr 480 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘𝑦) ∈ ℝ)
2319, 22resubcld 10337 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((abs‘(𝐹𝑧)) − (abs‘𝑦)) ∈ ℝ)
2420adantr 480 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 𝑦 ∈ ℂ)
2518, 24subcld 10271 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((𝐹𝑧) − 𝑦) ∈ ℂ)
2625abscld 14023 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘((𝐹𝑧) − 𝑦)) ∈ ℝ)
27 1cnd 9935 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ∈ ℂ)
2822recnd 9947 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (abs‘𝑦) ∈ ℂ)
2927, 28pncand 10272 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((1 + (abs‘𝑦)) − (abs‘𝑦)) = 1)
3029eqcomd 2616 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 = ((1 + (abs‘𝑦)) − (abs‘𝑦)))
31 simprr3 1104 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))
3212, 21readdcld 9948 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (1 + (abs‘𝑦)) ∈ ℝ)
3332adantr 480 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → (1 + (abs‘𝑦)) ∈ ℝ)
3433, 19, 22lesub1d 10513 . . . . . . . . . . . . . . . . . 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 221 . . . . . . . . . . . . . . . . 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 4605 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ≤ ((abs‘(𝐹𝑧)) − (abs‘𝑦)))
3718, 24abs2difd 14044 . . . . . . . . . . . . . . . 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 10073 . . . . . . . . . . . . . . 15 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → 1 ≤ (abs‘((𝐹𝑧) − 𝑦)))
3913, 26lenltd 10062 . . . . . . . . . . . . . . 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 221 . . . . . . . . . . . . . 14 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1)
4111, 40jca 553 . . . . . . . . . . . . 13 ((((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) ∧ (𝑧𝑆 ∧ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))) → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) ∧ ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1))
42 pm4.61 441 . . . . . . . . . . . . 13 (¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1) ↔ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) ∧ ¬ (abs‘((𝐹𝑧) − 𝑦)) < 1))
4341, 42sylibr 223 . . . . . . . . . . . 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 4587 . . . . . . . . . . . . . . 15 (𝑑 = 𝑐 → ((abs‘(𝑧𝐴)) < 𝑑 ↔ (abs‘(𝑧𝐴)) < 𝑐))
45443anbi2d 1396 . . . . . . . . . . . . . 14 (𝑑 = 𝑐 → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))) ↔ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
4645rexbidv 3034 . . . . . . . . . . . . 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 4586 . . . . . . . . . . . . . . . . 17 (𝑎 = (1 + (abs‘𝑦)) → (𝑎 ≤ (abs‘(𝐹𝑧)) ↔ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
48473anbi3d 1397 . . . . . . . . . . . . . . . 16 (𝑎 = (1 + (abs‘𝑦)) → ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))) ↔ (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
4948rexbidv 3034 . . . . . . . . . . . . . . 15 (𝑎 = (1 + (abs‘𝑦)) → (∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))) ↔ ∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧)))))
5049ralbidv 2969 . . . . . . . . . . . . . 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 31667 . . . . . . . . . . . . . . 15 (𝜑 → ∀𝑎 ∈ ℝ+𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))))
5554ad2antrr 758 . . . . . . . . . . . . . 14 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∀𝑎 ∈ ℝ+𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑𝑎 ≤ (abs‘(𝐹𝑧))))
56 0lt1 10429 . . . . . . . . . . . . . . . . 17 0 < 1
5756a1i 11 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 < 1)
5820absge0d 14031 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 ≤ (abs‘𝑦))
5912, 21, 57, 58addgtge0d 31666 . . . . . . . . . . . . . . 15 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 0 < (1 + (abs‘𝑦)))
6032, 59elrpd 11745 . . . . . . . . . . . . . 14 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → (1 + (abs‘𝑦)) ∈ ℝ+)
6150, 55, 60rspcdva 3288 . . . . . . . . . . . . 13 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∀𝑑 ∈ ℝ+𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑑 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
62 simpr 476 . . . . . . . . . . . . 13 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → 𝑐 ∈ ℝ+)
6346, 61, 62rspcdva 3288 . . . . . . . . . . . 12 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∃𝑧𝑆 (𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐 ∧ (1 + (abs‘𝑦)) ≤ (abs‘(𝐹𝑧))))
6443, 63reximddv 3001 . . . . . . . . . . 11 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ∃𝑧𝑆 ¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
65 rexnal 2978 . . . . . . . . . . 11 (∃𝑧𝑆 ¬ ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1) ↔ ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
6664, 65sylib 207 . . . . . . . . . 10 (((𝜑𝑦 ∈ ℂ) ∧ 𝑐 ∈ ℝ+) → ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
6766ralrimiva 2949 . . . . . . . . 9 ((𝜑𝑦 ∈ ℂ) → ∀𝑐 ∈ ℝ+ ¬ ∀𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
68 ralnex 2975 . . . . . . . . 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 207 . . . . . . . 8 ((𝜑𝑦 ∈ ℂ) → ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 1))
702, 8, 69rspcedvd 3289 . . . . . . 7 ((𝜑𝑦 ∈ ℂ) → ∃𝑒 ∈ ℝ+ ¬ ∃𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))
71 rexnal 2978 . . . . . . 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 207 . . . . . 6 ((𝜑𝑦 ∈ ℂ) → ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))
7372ex 449 . . . . 5 (𝜑 → (𝑦 ∈ ℂ → ¬ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)))
74 imnan 437 . . . . 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 207 . . . 4 (𝜑 → ¬ (𝑦 ∈ ℂ ∧ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒)))
7614, 51, 52ellimc3 23449 . . . 4 (𝜑 → (𝑦 ∈ (𝐹 lim 𝐴) ↔ (𝑦 ∈ ℂ ∧ ∀𝑒 ∈ ℝ+𝑐 ∈ ℝ+𝑧𝑆 ((𝑧𝐴 ∧ (abs‘(𝑧𝐴)) < 𝑐) → (abs‘((𝐹𝑧) − 𝑦)) < 𝑒))))
7775, 76mtbird 314 . . 3 (𝜑 → ¬ 𝑦 ∈ (𝐹 lim 𝐴))
7877alrimiv 1842 . 2 (𝜑 → ∀𝑦 ¬ 𝑦 ∈ (𝐹 lim 𝐴))
79 eq0 3888 . 2 ((𝐹 lim 𝐴) = ∅ ↔ ∀𝑦 ¬ 𝑦 ∈ (𝐹 lim 𝐴))
8078, 79sylibr 223 1 (𝜑 → (𝐹 lim 𝐴) = ∅)
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031  ∀wal 1473   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∀wral 2896  ∃wrex 2897   ⊆ wss 3540  ∅c0 3874   class class class wbr 4583  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  ℂcc 9813  ℝcr 9814  0cc0 9815  1c1 9816   + caddc 9818   < clt 9953   ≤ cle 9954   − cmin 10145  ℝ+crp 11708  abscabs 13822   limℂ climc 23432 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  ax-pre-sup 9893 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-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  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-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  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-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fi 8200  df-sup 8231  df-inf 8232  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-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-fz 12198  df-seq 12664  df-exp 12723  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-plusg 15781  df-mulr 15782  df-starv 15783  df-tset 15787  df-ple 15788  df-ds 15791  df-unif 15792  df-rest 15906  df-topn 15907  df-topgen 15927  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-mopn 19563  df-cnfld 19568  df-top 20521  df-bases 20522  df-topon 20523  df-topsp 20524  df-cnp 20842  df-xms 21935  df-ms 21936  df-limc 23436 This theorem is referenced by:  unbdqndv1  31669
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