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Theorem efrlim 24909
Description: The limit of the sequence (1 + 𝐴 / 𝑘)↑𝑘 is the exponential function. This is often taken as an alternate definition of the exponential function (see also dfef2 24910). (Contributed by Mario Carneiro, 1-Mar-2015.)
Hypothesis
Ref Expression
efrlim.1 𝑆 = (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1)))
Assertion
Ref Expression
efrlim (𝐴 ∈ ℂ → (𝑘 ∈ ℝ+ ↦ ((1 + (𝐴 / 𝑘))↑𝑐𝑘)) ⇝𝑟 (exp‘𝐴))
Distinct variable group:   𝐴,𝑘
Allowed substitution hint:   𝑆(𝑘)

Proof of Theorem efrlim
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 rge0ssre 12496 . . . . . . . 8 (0[,)+∞) ⊆ ℝ
2 ax-resscn 10274 . . . . . . . 8 ℝ ⊆ ℂ
31, 2sstri 3807 . . . . . . 7 (0[,)+∞) ⊆ ℂ
43sseli 3794 . . . . . 6 (𝑥 ∈ (0[,)+∞) → 𝑥 ∈ ℂ)
5 simpll 774 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → 𝐴 ∈ ℂ)
6 1cnd 10316 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → 1 ∈ ℂ)
7 simplr 776 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → 𝑥 ∈ ℂ)
8 ax-1ne0 10286 . . . . . . . . . . . 12 1 ≠ 0
98a1i 11 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → 1 ≠ 0)
10 simpr 473 . . . . . . . . . . . 12 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → ¬ 𝑥 = 0)
1110neqned 2985 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → 𝑥 ≠ 0)
125, 6, 7, 9, 11divdiv2d 11114 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (𝐴 / (1 / 𝑥)) = ((𝐴 · 𝑥) / 1))
13 mulcl 10301 . . . . . . . . . . . 12 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (𝐴 · 𝑥) ∈ ℂ)
1413adantr 468 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (𝐴 · 𝑥) ∈ ℂ)
1514div1d 11074 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → ((𝐴 · 𝑥) / 1) = (𝐴 · 𝑥))
1612, 15eqtrd 2840 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (𝐴 / (1 / 𝑥)) = (𝐴 · 𝑥))
1716oveq2d 6886 . . . . . . . 8 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (1 + (𝐴 / (1 / 𝑥))) = (1 + (𝐴 · 𝑥)))
1817oveq1d 6885 . . . . . . 7 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)) = ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))
1918ifeq2da 4310 . . . . . 6 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥))) = if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))))
204, 19sylan2 582 . . . . 5 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ (0[,)+∞)) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥))) = if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))))
2120mpteq2dva 4938 . . . 4 (𝐴 ∈ ℂ → (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)))) = (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))))
22 resmpt 5654 . . . . 5 ((0[,)+∞) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ (0[,)+∞)) = (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))))
233, 22ax-mp 5 . . . 4 ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ (0[,)+∞)) = (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))))
2421, 23syl6eqr 2858 . . 3 (𝐴 ∈ ℂ → (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)))) = ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ (0[,)+∞)))
253a1i 11 . . . 4 (𝐴 ∈ ℂ → (0[,)+∞) ⊆ ℂ)
26 0e0icopnf 12498 . . . . 5 0 ∈ (0[,)+∞)
2726a1i 11 . . . 4 (𝐴 ∈ ℂ → 0 ∈ (0[,)+∞))
28 eqeq2 2817 . . . . . . . . 9 ((exp‘(𝐴 · 1)) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) → (if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · 1)) ↔ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))))
29 eqeq2 2817 . . . . . . . . 9 ((exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) → (if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) ↔ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))))
30 efrlim.1 . . . . . . . . . . . . . 14 𝑆 = (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1)))
31 cnxmet 22786 . . . . . . . . . . . . . . . 16 (abs ∘ − ) ∈ (∞Met‘ℂ)
3231a1i 11 . . . . . . . . . . . . . . 15 (𝐴 ∈ ℂ → (abs ∘ − ) ∈ (∞Met‘ℂ))
33 0cnd 10314 . . . . . . . . . . . . . . 15 (𝐴 ∈ ℂ → 0 ∈ ℂ)
34 abscl 14237 . . . . . . . . . . . . . . . . . . 19 (𝐴 ∈ ℂ → (abs‘𝐴) ∈ ℝ)
35 peano2re 10490 . . . . . . . . . . . . . . . . . . 19 ((abs‘𝐴) ∈ ℝ → ((abs‘𝐴) + 1) ∈ ℝ)
3634, 35syl 17 . . . . . . . . . . . . . . . . . 18 (𝐴 ∈ ℂ → ((abs‘𝐴) + 1) ∈ ℝ)
37 0red 10324 . . . . . . . . . . . . . . . . . . 19 (𝐴 ∈ ℂ → 0 ∈ ℝ)
38 absge0 14246 . . . . . . . . . . . . . . . . . . 19 (𝐴 ∈ ℂ → 0 ≤ (abs‘𝐴))
3934ltp1d 11235 . . . . . . . . . . . . . . . . . . 19 (𝐴 ∈ ℂ → (abs‘𝐴) < ((abs‘𝐴) + 1))
4037, 34, 36, 38, 39lelttrd 10476 . . . . . . . . . . . . . . . . . 18 (𝐴 ∈ ℂ → 0 < ((abs‘𝐴) + 1))
4136, 40elrpd 12079 . . . . . . . . . . . . . . . . 17 (𝐴 ∈ ℂ → ((abs‘𝐴) + 1) ∈ ℝ+)
4241rpreccld 12092 . . . . . . . . . . . . . . . 16 (𝐴 ∈ ℂ → (1 / ((abs‘𝐴) + 1)) ∈ ℝ+)
4342rpxrd 12083 . . . . . . . . . . . . . . 15 (𝐴 ∈ ℂ → (1 / ((abs‘𝐴) + 1)) ∈ ℝ*)
44 blssm 22433 . . . . . . . . . . . . . . 15 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 0 ∈ ℂ ∧ (1 / ((abs‘𝐴) + 1)) ∈ ℝ*) → (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ⊆ ℂ)
4532, 33, 43, 44syl3anc 1483 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ⊆ ℂ)
4630, 45syl5eqss 3846 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → 𝑆 ⊆ ℂ)
4746sselda 3798 . . . . . . . . . . . 12 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 𝑥 ∈ ℂ)
48 mul0or 10948 . . . . . . . . . . . 12 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → ((𝐴 · 𝑥) = 0 ↔ (𝐴 = 0 ∨ 𝑥 = 0)))
4947, 48syldan 581 . . . . . . . . . . 11 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((𝐴 · 𝑥) = 0 ↔ (𝐴 = 0 ∨ 𝑥 = 0)))
5049biimpa 464 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 · 𝑥) = 0) → (𝐴 = 0 ∨ 𝑥 = 0))
51 simpl 470 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 𝐴 ∈ ℂ)
5251, 47jca 503 . . . . . . . . . . . . . . . . . 18 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ))
537, 11reccld 11075 . . . . . . . . . . . . . . . . . 18 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (1 / 𝑥) ∈ ℂ)
5452, 53sylan 571 . . . . . . . . . . . . . . . . 17 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ 𝑥 = 0) → (1 / 𝑥) ∈ ℂ)
5554adantlr 697 . . . . . . . . . . . . . . . 16 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (1 / 𝑥) ∈ ℂ)
56551cxpd 24666 . . . . . . . . . . . . . . 15 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (1↑𝑐(1 / 𝑥)) = 1)
57 simplr 776 . . . . . . . . . . . . . . . . . . . 20 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → 𝐴 = 0)
5857oveq1d 6885 . . . . . . . . . . . . . . . . . . 19 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (𝐴 · 𝑥) = (0 · 𝑥))
5947ad2antrr 708 . . . . . . . . . . . . . . . . . . . 20 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → 𝑥 ∈ ℂ)
6059mul02d 10515 . . . . . . . . . . . . . . . . . . 19 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (0 · 𝑥) = 0)
6158, 60eqtrd 2840 . . . . . . . . . . . . . . . . . 18 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (𝐴 · 𝑥) = 0)
6261oveq2d 6886 . . . . . . . . . . . . . . . . 17 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (1 + (𝐴 · 𝑥)) = (1 + 0))
63 1p0e1 11412 . . . . . . . . . . . . . . . . 17 (1 + 0) = 1
6462, 63syl6eq 2856 . . . . . . . . . . . . . . . 16 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (1 + (𝐴 · 𝑥)) = 1)
6564oveq1d 6885 . . . . . . . . . . . . . . 15 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)) = (1↑𝑐(1 / 𝑥)))
6657fveq2d 6408 . . . . . . . . . . . . . . . 16 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (exp‘𝐴) = (exp‘0))
67 ef0 15037 . . . . . . . . . . . . . . . 16 (exp‘0) = 1
6866, 67syl6eq 2856 . . . . . . . . . . . . . . 15 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → (exp‘𝐴) = 1)
6956, 65, 683eqtr4d 2850 . . . . . . . . . . . . . 14 ((((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) ∧ ¬ 𝑥 = 0) → ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)) = (exp‘𝐴))
7069ifeq2da 4310 . . . . . . . . . . . . 13 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = if(𝑥 = 0, (exp‘𝐴), (exp‘𝐴)))
71 ifid 4318 . . . . . . . . . . . . 13 if(𝑥 = 0, (exp‘𝐴), (exp‘𝐴)) = (exp‘𝐴)
7270, 71syl6eq 2856 . . . . . . . . . . . 12 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝐴 = 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘𝐴))
73 iftrue 4285 . . . . . . . . . . . . 13 (𝑥 = 0 → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘𝐴))
7473adantl 469 . . . . . . . . . . . 12 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ 𝑥 = 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘𝐴))
7572, 74jaodan 971 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 = 0 ∨ 𝑥 = 0)) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘𝐴))
76 mulid1 10319 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴)
7776ad2antrr 708 . . . . . . . . . . . 12 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 = 0 ∨ 𝑥 = 0)) → (𝐴 · 1) = 𝐴)
7877fveq2d 6408 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 = 0 ∨ 𝑥 = 0)) → (exp‘(𝐴 · 1)) = (exp‘𝐴))
7975, 78eqtr4d 2843 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 = 0 ∨ 𝑥 = 0)) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · 1)))
8050, 79syldan 581 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 · 𝑥) = 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · 1)))
81 mulne0b 10949 . . . . . . . . . . . . 13 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → ((𝐴 ≠ 0 ∧ 𝑥 ≠ 0) ↔ (𝐴 · 𝑥) ≠ 0))
8247, 81syldan 581 . . . . . . . . . . . 12 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((𝐴 ≠ 0 ∧ 𝑥 ≠ 0) ↔ (𝐴 · 𝑥) ≠ 0))
83 df-ne 2979 . . . . . . . . . . . 12 ((𝐴 · 𝑥) ≠ 0 ↔ ¬ (𝐴 · 𝑥) = 0)
8482, 83syl6bb 278 . . . . . . . . . . 11 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((𝐴 ≠ 0 ∧ 𝑥 ≠ 0) ↔ ¬ (𝐴 · 𝑥) = 0))
85 simprr 780 . . . . . . . . . . . . . . 15 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → 𝑥 ≠ 0)
8685neneqd 2983 . . . . . . . . . . . . . 14 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ¬ 𝑥 = 0)
8786iffalsed 4290 . . . . . . . . . . . . 13 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))
88 ax-1cn 10275 . . . . . . . . . . . . . . . 16 1 ∈ ℂ
8947, 13syldan 581 . . . . . . . . . . . . . . . 16 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝐴 · 𝑥) ∈ ℂ)
90 addcl 10299 . . . . . . . . . . . . . . . 16 ((1 ∈ ℂ ∧ (𝐴 · 𝑥) ∈ ℂ) → (1 + (𝐴 · 𝑥)) ∈ ℂ)
9188, 89, 90sylancr 577 . . . . . . . . . . . . . . 15 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (1 + (𝐴 · 𝑥)) ∈ ℂ)
9291adantr 468 . . . . . . . . . . . . . 14 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (1 + (𝐴 · 𝑥)) ∈ ℂ)
93 eqid 2806 . . . . . . . . . . . . . . . . . . 19 (1(ball‘(abs ∘ − ))1) = (1(ball‘(abs ∘ − ))1)
9493dvlog2lem 24611 . . . . . . . . . . . . . . . . . 18 (1(ball‘(abs ∘ − ))1) ⊆ (ℂ ∖ (-∞(,]0))
95 eqid 2806 . . . . . . . . . . . . . . . . . . 19 (ℂ ∖ (-∞(,]0)) = (ℂ ∖ (-∞(,]0))
9695logdmss 24601 . . . . . . . . . . . . . . . . . 18 (ℂ ∖ (-∞(,]0)) ⊆ (ℂ ∖ {0})
9794, 96sstri 3807 . . . . . . . . . . . . . . . . 17 (1(ball‘(abs ∘ − ))1) ⊆ (ℂ ∖ {0})
98 eqid 2806 . . . . . . . . . . . . . . . . . . . . . 22 (abs ∘ − ) = (abs ∘ − )
9998cnmetdval 22784 . . . . . . . . . . . . . . . . . . . . 21 (((1 + (𝐴 · 𝑥)) ∈ ℂ ∧ 1 ∈ ℂ) → ((1 + (𝐴 · 𝑥))(abs ∘ − )1) = (abs‘((1 + (𝐴 · 𝑥)) − 1)))
10091, 88, 99sylancl 576 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥))(abs ∘ − )1) = (abs‘((1 + (𝐴 · 𝑥)) − 1)))
101 pncan2 10569 . . . . . . . . . . . . . . . . . . . . . 22 ((1 ∈ ℂ ∧ (𝐴 · 𝑥) ∈ ℂ) → ((1 + (𝐴 · 𝑥)) − 1) = (𝐴 · 𝑥))
10288, 89, 101sylancr 577 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥)) − 1) = (𝐴 · 𝑥))
103102fveq2d 6408 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘((1 + (𝐴 · 𝑥)) − 1)) = (abs‘(𝐴 · 𝑥)))
104100, 103eqtrd 2840 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥))(abs ∘ − )1) = (abs‘(𝐴 · 𝑥)))
10589abscld 14394 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘(𝐴 · 𝑥)) ∈ ℝ)
10636adantr 468 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((abs‘𝐴) + 1) ∈ ℝ)
10747abscld 14394 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘𝑥) ∈ ℝ)
108106, 107remulcld 10351 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (((abs‘𝐴) + 1) · (abs‘𝑥)) ∈ ℝ)
109 1red 10322 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 1 ∈ ℝ)
110 absmul 14253 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (abs‘(𝐴 · 𝑥)) = ((abs‘𝐴) · (abs‘𝑥)))
11147, 110syldan 581 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘(𝐴 · 𝑥)) = ((abs‘𝐴) · (abs‘𝑥)))
11234adantr 468 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘𝐴) ∈ ℝ)
113112, 35syl 17 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((abs‘𝐴) + 1) ∈ ℝ)
11447absge0d 14402 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 0 ≤ (abs‘𝑥))
115112lep1d 11236 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘𝐴) ≤ ((abs‘𝐴) + 1))
116112, 113, 107, 114, 115lemul1ad 11244 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((abs‘𝐴) · (abs‘𝑥)) ≤ (((abs‘𝐴) + 1) · (abs‘𝑥)))
117111, 116eqbrtrd 4866 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘(𝐴 · 𝑥)) ≤ (((abs‘𝐴) + 1) · (abs‘𝑥)))
118 0cn 10313 . . . . . . . . . . . . . . . . . . . . . . . 24 0 ∈ ℂ
11998cnmetdval 22784 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑥 ∈ ℂ ∧ 0 ∈ ℂ) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0)))
12047, 118, 119sylancl 576 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0)))
12147subid1d 10662 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝑥 − 0) = 𝑥)
122121fveq2d 6408 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘(𝑥 − 0)) = (abs‘𝑥))
123120, 122eqtrd 2840 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝑥(abs ∘ − )0) = (abs‘𝑥))
124 simpr 473 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 𝑥𝑆)
125124, 30syl6eleq 2895 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 𝑥 ∈ (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))))
12631a1i 11 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs ∘ − ) ∈ (∞Met‘ℂ))
12743adantr 468 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (1 / ((abs‘𝐴) + 1)) ∈ ℝ*)
128 0cnd 10314 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 0 ∈ ℂ)
129 elbl3 22407 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ (1 / ((abs‘𝐴) + 1)) ∈ ℝ*) ∧ (0 ∈ ℂ ∧ 𝑥 ∈ ℂ)) → (𝑥 ∈ (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ↔ (𝑥(abs ∘ − )0) < (1 / ((abs‘𝐴) + 1))))
130126, 127, 128, 47, 129syl22anc 858 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝑥 ∈ (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ↔ (𝑥(abs ∘ − )0) < (1 / ((abs‘𝐴) + 1))))
131125, 130mpbid 223 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (𝑥(abs ∘ − )0) < (1 / ((abs‘𝐴) + 1)))
132123, 131eqbrtrrd 4868 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘𝑥) < (1 / ((abs‘𝐴) + 1)))
13340adantr 468 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 0 < ((abs‘𝐴) + 1))
134 ltmuldiv2 11178 . . . . . . . . . . . . . . . . . . . . . 22 (((abs‘𝑥) ∈ ℝ ∧ 1 ∈ ℝ ∧ (((abs‘𝐴) + 1) ∈ ℝ ∧ 0 < ((abs‘𝐴) + 1))) → ((((abs‘𝐴) + 1) · (abs‘𝑥)) < 1 ↔ (abs‘𝑥) < (1 / ((abs‘𝐴) + 1))))
135107, 109, 113, 133, 134syl112anc 1486 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((((abs‘𝐴) + 1) · (abs‘𝑥)) < 1 ↔ (abs‘𝑥) < (1 / ((abs‘𝐴) + 1))))
136132, 135mpbird 248 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (((abs‘𝐴) + 1) · (abs‘𝑥)) < 1)
137105, 108, 109, 117, 136lelttrd 10476 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (abs‘(𝐴 · 𝑥)) < 1)
138104, 137eqbrtrd 4866 . . . . . . . . . . . . . . . . . 18 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥))(abs ∘ − )1) < 1)
139 1rp 12046 . . . . . . . . . . . . . . . . . . . 20 1 ∈ ℝ+
140 rpxr 12050 . . . . . . . . . . . . . . . . . . . 20 (1 ∈ ℝ+ → 1 ∈ ℝ*)
141139, 140mp1i 13 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 1 ∈ ℝ*)
142 1cnd 10316 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → 1 ∈ ℂ)
143 elbl3 22407 . . . . . . . . . . . . . . . . . . 19 ((((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 1 ∈ ℝ*) ∧ (1 ∈ ℂ ∧ (1 + (𝐴 · 𝑥)) ∈ ℂ)) → ((1 + (𝐴 · 𝑥)) ∈ (1(ball‘(abs ∘ − ))1) ↔ ((1 + (𝐴 · 𝑥))(abs ∘ − )1) < 1))
144126, 141, 142, 91, 143syl22anc 858 . . . . . . . . . . . . . . . . . 18 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥)) ∈ (1(ball‘(abs ∘ − ))1) ↔ ((1 + (𝐴 · 𝑥))(abs ∘ − )1) < 1))
145138, 144mpbird 248 . . . . . . . . . . . . . . . . 17 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (1 + (𝐴 · 𝑥)) ∈ (1(ball‘(abs ∘ − ))1))
14697, 145sseldi 3796 . . . . . . . . . . . . . . . 16 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (1 + (𝐴 · 𝑥)) ∈ (ℂ ∖ {0}))
147 eldifsni 4512 . . . . . . . . . . . . . . . 16 ((1 + (𝐴 · 𝑥)) ∈ (ℂ ∖ {0}) → (1 + (𝐴 · 𝑥)) ≠ 0)
148146, 147syl 17 . . . . . . . . . . . . . . 15 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (1 + (𝐴 · 𝑥)) ≠ 0)
149148adantr 468 . . . . . . . . . . . . . 14 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (1 + (𝐴 · 𝑥)) ≠ 0)
15047adantr 468 . . . . . . . . . . . . . . 15 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → 𝑥 ∈ ℂ)
151150, 85reccld 11075 . . . . . . . . . . . . . 14 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (1 / 𝑥) ∈ ℂ)
15292, 149, 151cxpefd 24671 . . . . . . . . . . . . 13 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)) = (exp‘((1 / 𝑥) · (log‘(1 + (𝐴 · 𝑥))))))
15391, 148logcld 24530 . . . . . . . . . . . . . . . . 17 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (log‘(1 + (𝐴 · 𝑥))) ∈ ℂ)
154153adantr 468 . . . . . . . . . . . . . . . 16 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (log‘(1 + (𝐴 · 𝑥))) ∈ ℂ)
155151, 154mulcomd 10342 . . . . . . . . . . . . . . 15 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((1 / 𝑥) · (log‘(1 + (𝐴 · 𝑥)))) = ((log‘(1 + (𝐴 · 𝑥))) · (1 / 𝑥)))
156 simpll 774 . . . . . . . . . . . . . . . . . . 19 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → 𝐴 ∈ ℂ)
157 simprl 778 . . . . . . . . . . . . . . . . . . 19 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → 𝐴 ≠ 0)
158156, 157dividd 11080 . . . . . . . . . . . . . . . . . 18 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (𝐴 / 𝐴) = 1)
159158oveq1d 6885 . . . . . . . . . . . . . . . . 17 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((𝐴 / 𝐴) / 𝑥) = (1 / 𝑥))
160156, 156, 150, 157, 85divdiv1d 11113 . . . . . . . . . . . . . . . . 17 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((𝐴 / 𝐴) / 𝑥) = (𝐴 / (𝐴 · 𝑥)))
161159, 160eqtr3d 2842 . . . . . . . . . . . . . . . 16 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (1 / 𝑥) = (𝐴 / (𝐴 · 𝑥)))
162161oveq2d 6886 . . . . . . . . . . . . . . 15 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((log‘(1 + (𝐴 · 𝑥))) · (1 / 𝑥)) = ((log‘(1 + (𝐴 · 𝑥))) · (𝐴 / (𝐴 · 𝑥))))
16389adantr 468 . . . . . . . . . . . . . . . 16 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (𝐴 · 𝑥) ∈ ℂ)
16482biimpa 464 . . . . . . . . . . . . . . . 16 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (𝐴 · 𝑥) ≠ 0)
165154, 156, 163, 164div12d 11118 . . . . . . . . . . . . . . 15 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((log‘(1 + (𝐴 · 𝑥))) · (𝐴 / (𝐴 · 𝑥))) = (𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))
166155, 162, 1653eqtrd 2844 . . . . . . . . . . . . . 14 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → ((1 / 𝑥) · (log‘(1 + (𝐴 · 𝑥)))) = (𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))
167166fveq2d 6408 . . . . . . . . . . . . 13 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → (exp‘((1 / 𝑥) · (log‘(1 + (𝐴 · 𝑥))))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
16887, 152, 1673eqtrd 2844 . . . . . . . . . . . 12 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 ≠ 0 ∧ 𝑥 ≠ 0)) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
169168ex 399 . . . . . . . . . . 11 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((𝐴 ≠ 0 ∧ 𝑥 ≠ 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
17084, 169sylbird 251 . . . . . . . . . 10 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → (¬ (𝐴 · 𝑥) = 0 → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
171170imp 395 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
17228, 29, 80, 171ifbothda 4316 . . . . . . . 8 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
173172mpteq2dva 4938 . . . . . . 7 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) = (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))))
17446resmptd 5657 . . . . . . 7 (𝐴 ∈ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ 𝑆) = (𝑥𝑆 ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))))
175 1cnd 10316 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ (𝐴 · 𝑥) = 0) → 1 ∈ ℂ)
176153adantr 468 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → (log‘(1 + (𝐴 · 𝑥))) ∈ ℂ)
17789adantr 468 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → (𝐴 · 𝑥) ∈ ℂ)
178 simpr 473 . . . . . . . . . . 11 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → ¬ (𝐴 · 𝑥) = 0)
179178neqned 2985 . . . . . . . . . 10 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → (𝐴 · 𝑥) ≠ 0)
180176, 177, 179divcld 11082 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥𝑆) ∧ ¬ (𝐴 · 𝑥) = 0) → ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)) ∈ ℂ)
181175, 180ifclda 4313 . . . . . . . 8 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) ∈ ℂ)
182 eqidd 2807 . . . . . . . 8 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) = (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
183 eqidd 2807 . . . . . . . 8 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) = (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))))
184 oveq2 6878 . . . . . . . . . 10 (𝑦 = if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) → (𝐴 · 𝑦) = (𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
185184fveq2d 6408 . . . . . . . . 9 (𝑦 = if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) → (exp‘(𝐴 · 𝑦)) = (exp‘(𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
186 oveq2 6878 . . . . . . . . . . 11 (if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) = 1 → (𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) = (𝐴 · 1))
187186fveq2d 6408 . . . . . . . . . 10 (if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) = 1 → (exp‘(𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) = (exp‘(𝐴 · 1)))
188 oveq2 6878 . . . . . . . . . . 11 (if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) = ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)) → (𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) = (𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))
189188fveq2d 6408 . . . . . . . . . 10 (if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) = ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)) → (exp‘(𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) = (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
190187, 189ifsb 4292 . . . . . . . . 9 (exp‘(𝐴 · if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
191185, 190syl6eq 2856 . . . . . . . 8 (𝑦 = if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))) → (exp‘(𝐴 · 𝑦)) = if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
192181, 182, 183, 191fmptco 6615 . . . . . . 7 (𝐴 ∈ ℂ → ((𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∘ (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) = (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, (exp‘(𝐴 · 1)), (exp‘(𝐴 · ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))))
193173, 174, 1923eqtr4d 2850 . . . . . 6 (𝐴 ∈ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ 𝑆) = ((𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∘ (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))))
194 eqidd 2807 . . . . . . . . . 10 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) = (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))))
195 eqidd 2807 . . . . . . . . . 10 (𝐴 ∈ ℂ → (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) = (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))))
196 eqeq1 2810 . . . . . . . . . . 11 (𝑦 = (1 + (𝐴 · 𝑥)) → (𝑦 = 1 ↔ (1 + (𝐴 · 𝑥)) = 1))
197 fveq2 6404 . . . . . . . . . . . 12 (𝑦 = (1 + (𝐴 · 𝑥)) → (log‘𝑦) = (log‘(1 + (𝐴 · 𝑥))))
198 oveq1 6877 . . . . . . . . . . . 12 (𝑦 = (1 + (𝐴 · 𝑥)) → (𝑦 − 1) = ((1 + (𝐴 · 𝑥)) − 1))
199197, 198oveq12d 6888 . . . . . . . . . . 11 (𝑦 = (1 + (𝐴 · 𝑥)) → ((log‘𝑦) / (𝑦 − 1)) = ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1)))
200196, 199ifbieq2d 4304 . . . . . . . . . 10 (𝑦 = (1 + (𝐴 · 𝑥)) → if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1))) = if((1 + (𝐴 · 𝑥)) = 1, 1, ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1))))
201145, 194, 195, 200fmptco 6615 . . . . . . . . 9 (𝐴 ∈ ℂ → ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∘ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))) = (𝑥𝑆 ↦ if((1 + (𝐴 · 𝑥)) = 1, 1, ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1)))))
20263eqeq2i 2818 . . . . . . . . . . . 12 ((1 + (𝐴 · 𝑥)) = (1 + 0) ↔ (1 + (𝐴 · 𝑥)) = 1)
203142, 89, 128addcand 10520 . . . . . . . . . . . 12 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥)) = (1 + 0) ↔ (𝐴 · 𝑥) = 0))
204202, 203syl5bbr 276 . . . . . . . . . . 11 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((1 + (𝐴 · 𝑥)) = 1 ↔ (𝐴 · 𝑥) = 0))
205102oveq2d 6886 . . . . . . . . . . 11 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1)) = ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))
206204, 205ifbieq2d 4304 . . . . . . . . . 10 ((𝐴 ∈ ℂ ∧ 𝑥𝑆) → if((1 + (𝐴 · 𝑥)) = 1, 1, ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1))) = if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))
207206mpteq2dva 4938 . . . . . . . . 9 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ if((1 + (𝐴 · 𝑥)) = 1, 1, ((log‘(1 + (𝐴 · 𝑥))) / ((1 + (𝐴 · 𝑥)) − 1)))) = (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
208201, 207eqtrd 2840 . . . . . . . 8 (𝐴 ∈ ℂ → ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∘ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))) = (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))))
209 eqid 2806 . . . . . . . . . . . 12 ((TopOpen‘ℂfld) ↾t 𝑆) = ((TopOpen‘ℂfld) ↾t 𝑆)
210 eqid 2806 . . . . . . . . . . . . . 14 (TopOpen‘ℂfld) = (TopOpen‘ℂfld)
211210cnfldtopon 22796 . . . . . . . . . . . . 13 (TopOpen‘ℂfld) ∈ (TopOn‘ℂ)
212211a1i 11 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → (TopOpen‘ℂfld) ∈ (TopOn‘ℂ))
213 1cnd 10316 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → 1 ∈ ℂ)
214212, 212, 213cnmptc 21676 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ 1) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
215 id 22 . . . . . . . . . . . . . . 15 (𝐴 ∈ ℂ → 𝐴 ∈ ℂ)
216212, 212, 215cnmptc 21676 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ 𝐴) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
217212cnmptid 21675 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ 𝑥) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
218210mulcn 22880 . . . . . . . . . . . . . . 15 · ∈ (((TopOpen‘ℂfld) ×t (TopOpen‘ℂfld)) Cn (TopOpen‘ℂfld))
219218a1i 11 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → · ∈ (((TopOpen‘ℂfld) ×t (TopOpen‘ℂfld)) Cn (TopOpen‘ℂfld)))
220212, 216, 217, 219cnmpt12f 21680 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ (𝐴 · 𝑥)) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
221210addcn 22878 . . . . . . . . . . . . . 14 + ∈ (((TopOpen‘ℂfld) ×t (TopOpen‘ℂfld)) Cn (TopOpen‘ℂfld))
222221a1i 11 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → + ∈ (((TopOpen‘ℂfld) ×t (TopOpen‘ℂfld)) Cn (TopOpen‘ℂfld)))
223212, 214, 220, 222cnmpt12f 21680 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ (1 + (𝐴 · 𝑥))) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
224209, 212, 46, 223cnmpt1res 21690 . . . . . . . . . . 11 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn (TopOpen‘ℂfld)))
225145fmpttd 6603 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))):𝑆⟶(1(ball‘(abs ∘ − ))1))
226225frnd 6259 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → ran (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ⊆ (1(ball‘(abs ∘ − ))1))
227 difss 3936 . . . . . . . . . . . . . 14 (ℂ ∖ {0}) ⊆ ℂ
22897, 227sstri 3807 . . . . . . . . . . . . 13 (1(ball‘(abs ∘ − ))1) ⊆ ℂ
229228a1i 11 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → (1(ball‘(abs ∘ − ))1) ⊆ ℂ)
230 cnrest2 21301 . . . . . . . . . . . 12 (((TopOpen‘ℂfld) ∈ (TopOn‘ℂ) ∧ ran (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ⊆ (1(ball‘(abs ∘ − ))1) ∧ (1(ball‘(abs ∘ − ))1) ⊆ ℂ) → ((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn (TopOpen‘ℂfld)) ↔ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)))))
231212, 226, 229, 230syl3anc 1483 . . . . . . . . . . 11 (𝐴 ∈ ℂ → ((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn (TopOpen‘ℂfld)) ↔ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)))))
232224, 231mpbid 223 . . . . . . . . . 10 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1))))
233 blcntr 22428 . . . . . . . . . . . . 13 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 0 ∈ ℂ ∧ (1 / ((abs‘𝐴) + 1)) ∈ ℝ+) → 0 ∈ (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))))
23432, 33, 42, 233syl3anc 1483 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → 0 ∈ (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))))
235234, 30syl6eleqr 2896 . . . . . . . . . . 11 (𝐴 ∈ ℂ → 0 ∈ 𝑆)
236 resttopon 21176 . . . . . . . . . . . . 13 (((TopOpen‘ℂfld) ∈ (TopOn‘ℂ) ∧ 𝑆 ⊆ ℂ) → ((TopOpen‘ℂfld) ↾t 𝑆) ∈ (TopOn‘𝑆))
237211, 46, 236sylancr 577 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → ((TopOpen‘ℂfld) ↾t 𝑆) ∈ (TopOn‘𝑆))
238 toponuni 20929 . . . . . . . . . . . 12 (((TopOpen‘ℂfld) ↾t 𝑆) ∈ (TopOn‘𝑆) → 𝑆 = ((TopOpen‘ℂfld) ↾t 𝑆))
239237, 238syl 17 . . . . . . . . . . 11 (𝐴 ∈ ℂ → 𝑆 = ((TopOpen‘ℂfld) ↾t 𝑆))
240235, 239eleqtrd 2887 . . . . . . . . . 10 (𝐴 ∈ ℂ → 0 ∈ ((TopOpen‘ℂfld) ↾t 𝑆))
241 eqid 2806 . . . . . . . . . . 11 ((TopOpen‘ℂfld) ↾t 𝑆) = ((TopOpen‘ℂfld) ↾t 𝑆)
242241cncnpi 21293 . . . . . . . . . 10 (((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ (((TopOpen‘ℂfld) ↾t 𝑆) Cn ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1))) ∧ 0 ∈ ((TopOpen‘ℂfld) ↾t 𝑆)) → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)))‘0))
243232, 240, 242syl2anc 575 . . . . . . . . 9 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)))‘0))
244 cnelprrecn 10310 . . . . . . . . . . 11 ℂ ∈ {ℝ, ℂ}
245 logf1o 24524 . . . . . . . . . . . . . 14 log:(ℂ ∖ {0})–1-1-onto→ran log
246 f1of 6349 . . . . . . . . . . . . . 14 (log:(ℂ ∖ {0})–1-1-onto→ran log → log:(ℂ ∖ {0})⟶ran log)
247245, 246ax-mp 5 . . . . . . . . . . . . 13 log:(ℂ ∖ {0})⟶ran log
248 logrncn 24522 . . . . . . . . . . . . . 14 (𝑥 ∈ ran log → 𝑥 ∈ ℂ)
249248ssriv 3802 . . . . . . . . . . . . 13 ran log ⊆ ℂ
250 fss 6265 . . . . . . . . . . . . 13 ((log:(ℂ ∖ {0})⟶ran log ∧ ran log ⊆ ℂ) → log:(ℂ ∖ {0})⟶ℂ)
251247, 249, 250mp2an 675 . . . . . . . . . . . 12 log:(ℂ ∖ {0})⟶ℂ
252 fssres 6281 . . . . . . . . . . . 12 ((log:(ℂ ∖ {0})⟶ℂ ∧ (1(ball‘(abs ∘ − ))1) ⊆ (ℂ ∖ {0})) → (log ↾ (1(ball‘(abs ∘ − ))1)):(1(ball‘(abs ∘ − ))1)⟶ℂ)
253251, 97, 252mp2an 675 . . . . . . . . . . 11 (log ↾ (1(ball‘(abs ∘ − ))1)):(1(ball‘(abs ∘ − ))1)⟶ℂ
254 blcntr 22428 . . . . . . . . . . . . . 14 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 1 ∈ ℂ ∧ 1 ∈ ℝ+) → 1 ∈ (1(ball‘(abs ∘ − ))1))
25531, 88, 139, 254mp3an 1578 . . . . . . . . . . . . 13 1 ∈ (1(ball‘(abs ∘ − ))1)
256 ovex 6902 . . . . . . . . . . . . . 14 (1 / 𝑦) ∈ V
25793dvlog2 24612 . . . . . . . . . . . . . 14 (ℂ D (log ↾ (1(ball‘(abs ∘ − ))1))) = (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦))
258256, 257dmmpti 6230 . . . . . . . . . . . . 13 dom (ℂ D (log ↾ (1(ball‘(abs ∘ − ))1))) = (1(ball‘(abs ∘ − ))1)
259255, 258eleqtrri 2884 . . . . . . . . . . . 12 1 ∈ dom (ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))
260 eqid 2806 . . . . . . . . . . . . 13 ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) = ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1))
261257fveq1i 6405 . . . . . . . . . . . . . . . . 17 ((ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))‘1) = ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦))‘1)
262 oveq2 6878 . . . . . . . . . . . . . . . . . . . 20 (𝑦 = 1 → (1 / 𝑦) = (1 / 1))
263 1div1e1 10998 . . . . . . . . . . . . . . . . . . . 20 (1 / 1) = 1
264262, 263syl6eq 2856 . . . . . . . . . . . . . . . . . . 19 (𝑦 = 1 → (1 / 𝑦) = 1)
265 eqid 2806 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦)) = (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦))
266 1ex 10317 . . . . . . . . . . . . . . . . . . 19 1 ∈ V
267264, 265, 266fvmpt 6499 . . . . . . . . . . . . . . . . . 18 (1 ∈ (1(ball‘(abs ∘ − ))1) → ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦))‘1) = 1)
268255, 267ax-mp 5 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ (1 / 𝑦))‘1) = 1
269261, 268eqtr2i 2829 . . . . . . . . . . . . . . . 16 1 = ((ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))‘1)
270269a1i 11 . . . . . . . . . . . . . . 15 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → 1 = ((ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))‘1))
271 fvres 6423 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → ((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) = (log‘𝑦))
272 fvres 6423 . . . . . . . . . . . . . . . . . . . 20 (1 ∈ (1(ball‘(abs ∘ − ))1) → ((log ↾ (1(ball‘(abs ∘ − ))1))‘1) = (log‘1))
273255, 272mp1i 13 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → ((log ↾ (1(ball‘(abs ∘ − ))1))‘1) = (log‘1))
274 log1 24545 . . . . . . . . . . . . . . . . . . 19 (log‘1) = 0
275273, 274syl6eq 2856 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → ((log ↾ (1(ball‘(abs ∘ − ))1))‘1) = 0)
276271, 275oveq12d 6888 . . . . . . . . . . . . . . . . 17 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → (((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) − ((log ↾ (1(ball‘(abs ∘ − ))1))‘1)) = ((log‘𝑦) − 0))
27797sseli 3794 . . . . . . . . . . . . . . . . . . . 20 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → 𝑦 ∈ (ℂ ∖ {0}))
278 eldifsn 4508 . . . . . . . . . . . . . . . . . . . 20 (𝑦 ∈ (ℂ ∖ {0}) ↔ (𝑦 ∈ ℂ ∧ 𝑦 ≠ 0))
279277, 278sylib 209 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → (𝑦 ∈ ℂ ∧ 𝑦 ≠ 0))
280 logcl 24528 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℂ ∧ 𝑦 ≠ 0) → (log‘𝑦) ∈ ℂ)
281279, 280syl 17 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → (log‘𝑦) ∈ ℂ)
282281subid1d 10662 . . . . . . . . . . . . . . . . 17 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → ((log‘𝑦) − 0) = (log‘𝑦))
283276, 282eqtr2d 2841 . . . . . . . . . . . . . . . 16 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → (log‘𝑦) = (((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) − ((log ↾ (1(ball‘(abs ∘ − ))1))‘1)))
284283oveq1d 6885 . . . . . . . . . . . . . . 15 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → ((log‘𝑦) / (𝑦 − 1)) = ((((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) − ((log ↾ (1(ball‘(abs ∘ − ))1))‘1)) / (𝑦 − 1)))
285270, 284ifeq12d 4299 . . . . . . . . . . . . . 14 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) → if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1))) = if(𝑦 = 1, ((ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))‘1), ((((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) − ((log ↾ (1(ball‘(abs ∘ − ))1))‘1)) / (𝑦 − 1))))
286285mpteq2ia 4934 . . . . . . . . . . . . 13 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) = (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, ((ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))‘1), ((((log ↾ (1(ball‘(abs ∘ − ))1))‘𝑦) − ((log ↾ (1(ball‘(abs ∘ − ))1))‘1)) / (𝑦 − 1))))
287260, 210, 286dvcnp 23895 . . . . . . . . . . . 12 (((ℂ ∈ {ℝ, ℂ} ∧ (log ↾ (1(ball‘(abs ∘ − ))1)):(1(ball‘(abs ∘ − ))1)⟶ℂ ∧ (1(ball‘(abs ∘ − ))1) ⊆ ℂ) ∧ 1 ∈ dom (ℂ D (log ↾ (1(ball‘(abs ∘ − ))1)))) → (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∈ ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘1))
288259, 287mpan2 674 . . . . . . . . . . 11 ((ℂ ∈ {ℝ, ℂ} ∧ (log ↾ (1(ball‘(abs ∘ − ))1)):(1(ball‘(abs ∘ − ))1)⟶ℂ ∧ (1(ball‘(abs ∘ − ))1) ⊆ ℂ) → (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∈ ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘1))
289244, 253, 228, 288mp3an 1578 . . . . . . . . . 10 (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∈ ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘1)
290 oveq2 6878 . . . . . . . . . . . . . . 15 (𝑥 = 0 → (𝐴 · 𝑥) = (𝐴 · 0))
291290oveq2d 6886 . . . . . . . . . . . . . 14 (𝑥 = 0 → (1 + (𝐴 · 𝑥)) = (1 + (𝐴 · 0)))
292 eqid 2806 . . . . . . . . . . . . . 14 (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) = (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))
293 ovex 6902 . . . . . . . . . . . . . 14 (1 + (𝐴 · 0)) ∈ V
294291, 292, 293fvmpt 6499 . . . . . . . . . . . . 13 (0 ∈ 𝑆 → ((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0) = (1 + (𝐴 · 0)))
295235, 294syl 17 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → ((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0) = (1 + (𝐴 · 0)))
296 mul01 10496 . . . . . . . . . . . . . 14 (𝐴 ∈ ℂ → (𝐴 · 0) = 0)
297296oveq2d 6886 . . . . . . . . . . . . 13 (𝐴 ∈ ℂ → (1 + (𝐴 · 0)) = (1 + 0))
298297, 63syl6eq 2856 . . . . . . . . . . . 12 (𝐴 ∈ ℂ → (1 + (𝐴 · 0)) = 1)
299295, 298eqtrd 2840 . . . . . . . . . . 11 (𝐴 ∈ ℂ → ((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0) = 1)
300299fveq2d 6408 . . . . . . . . . 10 (𝐴 ∈ ℂ → ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0)) = ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘1))
301289, 300syl5eleqr 2892 . . . . . . . . 9 (𝐴 ∈ ℂ → (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∈ ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0)))
302 cnpco 21282 . . . . . . . . 9 (((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP ((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)))‘0) ∧ (𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∈ ((((TopOpen‘ℂfld) ↾t (1(ball‘(abs ∘ − ))1)) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))‘0))) → ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∘ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
303243, 301, 302syl2anc 575 . . . . . . . 8 (𝐴 ∈ ℂ → ((𝑦 ∈ (1(ball‘(abs ∘ − ))1) ↦ if(𝑦 = 1, 1, ((log‘𝑦) / (𝑦 − 1)))) ∘ (𝑥𝑆 ↦ (1 + (𝐴 · 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
304208, 303eqeltrrd 2886 . . . . . . 7 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
305212, 212, 215cnmptc 21676 . . . . . . . . . 10 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ 𝐴) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
306212cnmptid 21675 . . . . . . . . . 10 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ 𝑦) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
307212, 305, 306, 219cnmpt12f 21680 . . . . . . . . 9 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ (𝐴 · 𝑦)) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
308 efcn 24410 . . . . . . . . . . 11 exp ∈ (ℂ–cn→ℂ)
309210cncfcn1 22923 . . . . . . . . . . 11 (ℂ–cn→ℂ) = ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld))
310308, 309eleqtri 2883 . . . . . . . . . 10 exp ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld))
311310a1i 11 . . . . . . . . 9 (𝐴 ∈ ℂ → exp ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
312212, 307, 311cnmpt11f 21678 . . . . . . . 8 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)))
313181fmpttd 6603 . . . . . . . . 9 (𝐴 ∈ ℂ → (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))):𝑆⟶ℂ)
314313, 235ffvelrnd 6578 . . . . . . . 8 (𝐴 ∈ ℂ → ((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))‘0) ∈ ℂ)
315211toponunii 20931 . . . . . . . . 9 ℂ = (TopOpen‘ℂfld)
316315cncnpi 21293 . . . . . . . 8 (((𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∈ ((TopOpen‘ℂfld) Cn (TopOpen‘ℂfld)) ∧ ((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))‘0) ∈ ℂ) → (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))‘0)))
317312, 314, 316syl2anc 575 . . . . . . 7 (𝐴 ∈ ℂ → (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))‘0)))
318 cnpco 21282 . . . . . . 7 (((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0) ∧ (𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘((𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))‘0))) → ((𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∘ (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
319304, 317, 318syl2anc 575 . . . . . 6 (𝐴 ∈ ℂ → ((𝑦 ∈ ℂ ↦ (exp‘(𝐴 · 𝑦))) ∘ (𝑥𝑆 ↦ if((𝐴 · 𝑥) = 0, 1, ((log‘(1 + (𝐴 · 𝑥))) / (𝐴 · 𝑥))))) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
320193, 319eqeltrd 2885 . . . . 5 (𝐴 ∈ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ 𝑆) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0))
321210cnfldtop 22797 . . . . . . 7 (TopOpen‘ℂfld) ∈ Top
322321a1i 11 . . . . . 6 (𝐴 ∈ ℂ → (TopOpen‘ℂfld) ∈ Top)
323210cnfldtopn 22795 . . . . . . . . . . 11 (TopOpen‘ℂfld) = (MetOpen‘(abs ∘ − ))
324323blopn 22515 . . . . . . . . . 10 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 0 ∈ ℂ ∧ (1 / ((abs‘𝐴) + 1)) ∈ ℝ*) → (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ∈ (TopOpen‘ℂfld))
32532, 33, 43, 324syl3anc 1483 . . . . . . . . 9 (𝐴 ∈ ℂ → (0(ball‘(abs ∘ − ))(1 / ((abs‘𝐴) + 1))) ∈ (TopOpen‘ℂfld))
32630, 325syl5eqel 2889 . . . . . . . 8 (𝐴 ∈ ℂ → 𝑆 ∈ (TopOpen‘ℂfld))
327 isopn3i 21097 . . . . . . . 8 (((TopOpen‘ℂfld) ∈ Top ∧ 𝑆 ∈ (TopOpen‘ℂfld)) → ((int‘(TopOpen‘ℂfld))‘𝑆) = 𝑆)
328321, 326, 327sylancr 577 . . . . . . 7 (𝐴 ∈ ℂ → ((int‘(TopOpen‘ℂfld))‘𝑆) = 𝑆)
329235, 328eleqtrrd 2888 . . . . . 6 (𝐴 ∈ ℂ → 0 ∈ ((int‘(TopOpen‘ℂfld))‘𝑆))
330 efcl 15029 . . . . . . . . 9 (𝐴 ∈ ℂ → (exp‘𝐴) ∈ ℂ)
331330ad2antrr 708 . . . . . . . 8 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ 𝑥 = 0) → (exp‘𝐴) ∈ ℂ)
33288, 14, 90sylancr 577 . . . . . . . . 9 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → (1 + (𝐴 · 𝑥)) ∈ ℂ)
333332, 53cxpcld 24667 . . . . . . . 8 (((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) ∧ ¬ 𝑥 = 0) → ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)) ∈ ℂ)
334331, 333ifclda 4313 . . . . . . 7 ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℂ) → if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥))) ∈ ℂ)
335334fmpttd 6603 . . . . . 6 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))):ℂ⟶ℂ)
336315, 315cnprest 21304 . . . . . 6 ((((TopOpen‘ℂfld) ∈ Top ∧ 𝑆 ⊆ ℂ) ∧ (0 ∈ ((int‘(TopOpen‘ℂfld))‘𝑆) ∧ (𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))):ℂ⟶ℂ)) → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘0) ↔ ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ 𝑆) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0)))
337322, 46, 329, 335, 336syl22anc 858 . . . . 5 (𝐴 ∈ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘0) ↔ ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ 𝑆) ∈ ((((TopOpen‘ℂfld) ↾t 𝑆) CnP (TopOpen‘ℂfld))‘0)))
338320, 337mpbird 248 . . . 4 (𝐴 ∈ ℂ → (𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘0))
339315cnpresti 21303 . . . 4 (((0[,)+∞) ⊆ ℂ ∧ 0 ∈ (0[,)+∞) ∧ (𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ∈ (((TopOpen‘ℂfld) CnP (TopOpen‘ℂfld))‘0)) → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ (0[,)+∞)) ∈ ((((TopOpen‘ℂfld) ↾t (0[,)+∞)) CnP (TopOpen‘ℂfld))‘0))
34025, 27, 338, 339syl3anc 1483 . . 3 (𝐴 ∈ ℂ → ((𝑥 ∈ ℂ ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 · 𝑥))↑𝑐(1 / 𝑥)))) ↾ (0[,)+∞)) ∈ ((((TopOpen‘ℂfld) ↾t (0[,)+∞)) CnP (TopOpen‘ℂfld))‘0))
34124, 340eqeltrd 2885 . 2 (𝐴 ∈ ℂ → (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t (0[,)+∞)) CnP (TopOpen‘ℂfld))‘0))
342 simpl 470 . . . . . 6 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → 𝐴 ∈ ℂ)
343 rpcn 12051 . . . . . . 7 (𝑘 ∈ ℝ+𝑘 ∈ ℂ)
344343adantl 469 . . . . . 6 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → 𝑘 ∈ ℂ)
345 rpne0 12058 . . . . . . 7 (𝑘 ∈ ℝ+𝑘 ≠ 0)
346345adantl 469 . . . . . 6 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → 𝑘 ≠ 0)
347342, 344, 346divcld 11082 . . . . 5 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → (𝐴 / 𝑘) ∈ ℂ)
348 addcl 10299 . . . . 5 ((1 ∈ ℂ ∧ (𝐴 / 𝑘) ∈ ℂ) → (1 + (𝐴 / 𝑘)) ∈ ℂ)
34988, 347, 348sylancr 577 . . . 4 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → (1 + (𝐴 / 𝑘)) ∈ ℂ)
350349, 344cxpcld 24667 . . 3 ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℝ+) → ((1 + (𝐴 / 𝑘))↑𝑐𝑘) ∈ ℂ)
351 oveq2 6878 . . . . 5 (𝑘 = (1 / 𝑥) → (𝐴 / 𝑘) = (𝐴 / (1 / 𝑥)))
352351oveq2d 6886 . . . 4 (𝑘 = (1 / 𝑥) → (1 + (𝐴 / 𝑘)) = (1 + (𝐴 / (1 / 𝑥))))
353 id 22 . . . 4 (𝑘 = (1 / 𝑥) → 𝑘 = (1 / 𝑥))
354352, 353oveq12d 6888 . . 3 (𝑘 = (1 / 𝑥) → ((1 + (𝐴 / 𝑘))↑𝑐𝑘) = ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)))
355 eqid 2806 . . 3 ((TopOpen‘ℂfld) ↾t (0[,)+∞)) = ((TopOpen‘ℂfld) ↾t (0[,)+∞))
356330, 350, 354, 210, 355rlimcnp3 24907 . 2 (𝐴 ∈ ℂ → ((𝑘 ∈ ℝ+ ↦ ((1 + (𝐴 / 𝑘))↑𝑐𝑘)) ⇝𝑟 (exp‘𝐴) ↔ (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, (exp‘𝐴), ((1 + (𝐴 / (1 / 𝑥)))↑𝑐(1 / 𝑥)))) ∈ ((((TopOpen‘ℂfld) ↾t (0[,)+∞)) CnP (TopOpen‘ℂfld))‘0)))
357341, 356mpbird 248 1 (𝐴 ∈ ℂ → (𝑘 ∈ ℝ+ ↦ ((1 + (𝐴 / 𝑘))↑𝑐𝑘)) ⇝𝑟 (exp‘𝐴))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 197  wa 384  wo 865  w3a 1100   = wceq 1637  wcel 2156  wne 2978  cdif 3766  wss 3769  ifcif 4279  {csn 4370  {cpr 4372   cuni 4630   class class class wbr 4844  cmpt 4923  dom cdm 5311  ran crn 5312  cres 5313  ccom 5315  wf 6093  1-1-ontowf1o 6096  cfv 6097  (class class class)co 6870  cc 10215  cr 10216  0cc0 10217  1c1 10218   + caddc 10220   · cmul 10222  +∞cpnf 10352  -∞cmnf 10353  *cxr 10354   < clt 10355  cle 10356  cmin 10547   / cdiv 10965  +crp 12042  (,]cioc 12390  [,)cico 12391  abscabs 14193  𝑟 crli 14435  expce 15008  t crest 16282  TopOpenctopn 16283  ∞Metcxmt 19935  ballcbl 19937  fldccnfld 19950  Topctop 20908  TopOnctopon 20925  intcnt 21032   Cn ccn 21239   CnP ccnp 21240   ×t ctx 21574  cnccncf 22889   D cdv 23840  logclog 24514  𝑐ccxp 24515
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877  ax-4 1894  ax-5 2001  ax-6 2068  ax-7 2104  ax-8 2158  ax-9 2165  ax-10 2185  ax-11 2201  ax-12 2214  ax-13 2420  ax-ext 2784  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5096  ax-un 7175  ax-inf2 8781  ax-cnex 10273  ax-resscn 10274  ax-1cn 10275  ax-icn 10276  ax-addcl 10277  ax-addrcl 10278  ax-mulcl 10279  ax-mulrcl 10280  ax-mulcom 10281  ax-addass 10282  ax-mulass 10283  ax-distr 10284  ax-i2m1 10285  ax-1ne0 10286  ax-1rid 10287  ax-rnegex 10288  ax-rrecex 10289  ax-cnre 10290  ax-pre-lttri 10291  ax-pre-lttrn 10292  ax-pre-ltadd 10293  ax-pre-mulgt0 10294  ax-pre-sup 10295  ax-addf 10296  ax-mulf 10297
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 866  df-3or 1101  df-3an 1102  df-tru 1641  df-fal 1651  df-ex 1860  df-nf 1864  df-sb 2061  df-eu 2634  df-mo 2635  df-clab 2793  df-cleq 2799  df-clel 2802  df-nfc 2937  df-ne 2979  df-nel 3082  df-ral 3101  df-rex 3102  df-reu 3103  df-rmo 3104  df-rab 3105  df-v 3393  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4117  df-if 4280  df-pw 4353  df-sn 4371  df-pr 4373  df-tp 4375  df-op 4377  df-uni 4631  df-int 4670  df-iun 4714  df-iin 4715  df-br 4845  df-opab 4907  df-mpt 4924  df-tr 4947  df-id 5219  df-eprel 5224  df-po 5232  df-so 5233  df-fr 5270  df-se 5271  df-we 5272  df-xp 5317  df-rel 5318  df-cnv 5319  df-co 5320  df-dm 5321  df-rn 5322  df-res 5323  df-ima 5324  df-pred 5893  df-ord 5939  df-on 5940  df-lim 5941  df-suc 5942  df-iota 6060  df-fun 6099  df-fn 6100  df-f 6101  df-f1 6102  df-fo 6103  df-f1o 6104  df-fv 6105  df-isom 6106  df-riota 6831  df-ov 6873  df-oprab 6874  df-mpt2 6875  df-of 7123  df-om 7292  df-1st 7394  df-2nd 7395  df-supp 7526  df-wrecs 7638  df-recs 7700  df-rdg 7738  df-1o 7792  df-2o 7793  df-oadd 7796  df-er 7975  df-map 8090  df-pm 8091  df-ixp 8142  df-en 8189  df-dom 8190  df-sdom 8191  df-fin 8192  df-fsupp 8511  df-fi 8552  df-sup 8583  df-inf 8584  df-oi 8650  df-card 9044  df-cda 9271  df-pnf 10357  df-mnf 10358  df-xr 10359  df-ltxr 10360  df-le 10361  df-sub 10549  df-neg 10550  df-div 10966  df-nn 11302  df-2 11360  df-3 11361  df-4 11362  df-5 11363  df-6 11364  df-7 11365  df-8 11366  df-9 11367  df-n0 11556  df-z 11640  df-dec 11756  df-uz 11901  df-q 12004  df-rp 12043  df-xneg 12158  df-xadd 12159  df-xmul 12160  df-ioo 12393  df-ioc 12394  df-ico 12395  df-icc 12396  df-fz 12546  df-fzo 12686  df-fl 12813  df-mod 12889  df-seq 13021  df-exp 13080  df-fac 13277  df-bc 13306  df-hash 13334  df-shft 14026  df-cj 14058  df-re 14059  df-im 14060  df-sqrt 14194  df-abs 14195  df-limsup 14421  df-clim 14438  df-rlim 14439  df-sum 14636  df-ef 15014  df-sin 15016  df-cos 15017  df-tan 15018  df-pi 15019  df-struct 16066  df-ndx 16067  df-slot 16068  df-base 16070  df-sets 16071  df-ress 16072  df-plusg 16162  df-mulr 16163  df-starv 16164  df-sca 16165  df-vsca 16166  df-ip 16167  df-tset 16168  df-ple 16169  df-ds 16171  df-unif 16172  df-hom 16173  df-cco 16174  df-rest 16284  df-topn 16285  df-0g 16303  df-gsum 16304  df-topgen 16305  df-pt 16306  df-prds 16309  df-xrs 16363  df-qtop 16368  df-imas 16369  df-xps 16371  df-mre 16447  df-mrc 16448  df-acs 16450  df-mgm 17443  df-sgrp 17485  df-mnd 17496  df-submnd 17537  df-mulg 17742  df-cntz 17947  df-cmn 18392  df-psmet 19942  df-xmet 19943  df-met 19944  df-bl 19945  df-mopn 19946  df-fbas 19947  df-fg 19948  df-cnfld 19951  df-top 20909  df-topon 20926  df-topsp 20948  df-bases 20961  df-cld 21034  df-ntr 21035  df-cls 21036  df-nei 21113  df-lp 21151  df-perf 21152  df-cn 21242  df-cnp 21243  df-haus 21330  df-cmp 21401  df-tx 21576  df-hmeo 21769  df-fil 21860  df-fm 21952  df-flim 21953  df-flf 21954  df-xms 22335  df-ms 22336  df-tms 22337  df-cncf 22891  df-limc 23843  df-dv 23844  df-log 24516  df-cxp 24517
This theorem is referenced by:  dfef2  24910
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