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Theorem dvlog 26794
Description: The derivative of the complex logarithm function. (Contributed by Mario Carneiro, 25-Feb-2015.)
Hypothesis
Ref Expression
logcn.d 𝐷 = (ℂ ∖ (-∞(,]0))
Assertion
Ref Expression
dvlog (ℂ D (log ↾ 𝐷)) = (𝑥𝐷 ↦ (1 / 𝑥))
Distinct variable group:   𝑥,𝐷

Proof of Theorem dvlog
StepHypRef Expression
1 eqid 2763 . . . 4 (TopOpen‘ℂfld) = (TopOpen‘ℂfld)
21cnfldtopon 24920 . . . . 5 (TopOpen‘ℂfld) ∈ (TopOn‘ℂ)
32toponrestid 23059 . . . 4 (TopOpen‘ℂfld) = ((TopOpen‘ℂfld) ↾t ℂ)
4 cnelprrecn 11194 . . . . 5 ℂ ∈ {ℝ, ℂ}
54a1i 11 . . . 4 (⊤ → ℂ ∈ {ℝ, ℂ})
6 logcn.d . . . . . 6 𝐷 = (ℂ ∖ (-∞(,]0))
76logdmopn 26792 . . . . 5 𝐷 ∈ (TopOpen‘ℂfld)
87a1i 11 . . . 4 (⊤ → 𝐷 ∈ (TopOpen‘ℂfld))
9 logf1o 26707 . . . . . . . . 9 log:(ℂ ∖ {0})–1-1-onto→ran log
10 f1of1 6821 . . . . . . . . 9 (log:(ℂ ∖ {0})–1-1-onto→ran log → log:(ℂ ∖ {0})–1-1→ran log)
119, 10ax-mp 5 . . . . . . . 8 log:(ℂ ∖ {0})–1-1→ran log
126logdmss 26785 . . . . . . . 8 𝐷 ⊆ (ℂ ∖ {0})
13 f1ores 6837 . . . . . . . 8 ((log:(ℂ ∖ {0})–1-1→ran log ∧ 𝐷 ⊆ (ℂ ∖ {0})) → (log ↾ 𝐷):𝐷1-1-onto→(log “ 𝐷))
1411, 12, 13mp2an 704 . . . . . . 7 (log ↾ 𝐷):𝐷1-1-onto→(log “ 𝐷)
15 f1ocnv 6835 . . . . . . 7 ((log ↾ 𝐷):𝐷1-1-onto→(log “ 𝐷) → (log ↾ 𝐷):(log “ 𝐷)–1-1-onto𝐷)
1614, 15ax-mp 5 . . . . . 6 (log ↾ 𝐷):(log “ 𝐷)–1-1-onto𝐷
17 df-log 26699 . . . . . . . . . . 11 log = (exp ↾ (ℑ “ (-π(,]π)))
1817reseq1i 5976 . . . . . . . . . 10 (log ↾ 𝐷) = ((exp ↾ (ℑ “ (-π(,]π))) ↾ 𝐷)
1918cnveqi 5862 . . . . . . . . 9 (log ↾ 𝐷) = ((exp ↾ (ℑ “ (-π(,]π))) ↾ 𝐷)
20 eff 16136 . . . . . . . . . . 11 exp:ℂ⟶ℂ
21 cnvimass 6086 . . . . . . . . . . . 12 (ℑ “ (-π(,]π)) ⊆ dom ℑ
22 imf 15166 . . . . . . . . . . . . 13 ℑ:ℂ⟶ℝ
2322fdmi 6719 . . . . . . . . . . . 12 dom ℑ = ℂ
2421, 23sseqtri 3986 . . . . . . . . . . 11 (ℑ “ (-π(,]π)) ⊆ ℂ
25 fssres 6746 . . . . . . . . . . 11 ((exp:ℂ⟶ℂ ∧ (ℑ “ (-π(,]π)) ⊆ ℂ) → (exp ↾ (ℑ “ (-π(,]π))):(ℑ “ (-π(,]π))⟶ℂ)
2620, 24, 25mp2an 704 . . . . . . . . . 10 (exp ↾ (ℑ “ (-π(,]π))):(ℑ “ (-π(,]π))⟶ℂ
27 ffun 6710 . . . . . . . . . 10 ((exp ↾ (ℑ “ (-π(,]π))):(ℑ “ (-π(,]π))⟶ℂ → Fun (exp ↾ (ℑ “ (-π(,]π))))
28 funcnvres2 6618 . . . . . . . . . 10 (Fun (exp ↾ (ℑ “ (-π(,]π))) → ((exp ↾ (ℑ “ (-π(,]π))) ↾ 𝐷) = ((exp ↾ (ℑ “ (-π(,]π))) ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷)))
2926, 27, 28mp2b 10 . . . . . . . . 9 ((exp ↾ (ℑ “ (-π(,]π))) ↾ 𝐷) = ((exp ↾ (ℑ “ (-π(,]π))) ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷))
30 cnvimass 6086 . . . . . . . . . . 11 ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷) ⊆ dom (exp ↾ (ℑ “ (-π(,]π)))
3126fdmi 6719 . . . . . . . . . . 11 dom (exp ↾ (ℑ “ (-π(,]π))) = (ℑ “ (-π(,]π))
3230, 31sseqtri 3986 . . . . . . . . . 10 ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷) ⊆ (ℑ “ (-π(,]π))
33 resabs1 6007 . . . . . . . . . 10 (((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷) ⊆ (ℑ “ (-π(,]π)) → ((exp ↾ (ℑ “ (-π(,]π))) ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷)) = (exp ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷)))
3432, 33ax-mp 5 . . . . . . . . 9 ((exp ↾ (ℑ “ (-π(,]π))) ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷)) = (exp ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷))
3519, 29, 343eqtri 2790 . . . . . . . 8 (log ↾ 𝐷) = (exp ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷))
3617imaeq1i 6061 . . . . . . . . 9 (log “ 𝐷) = ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷)
3736reseq2i 5977 . . . . . . . 8 (exp ↾ (log “ 𝐷)) = (exp ↾ ((exp ↾ (ℑ “ (-π(,]π))) “ 𝐷))
3835, 37eqtr4i 2789 . . . . . . 7 (log ↾ 𝐷) = (exp ↾ (log “ 𝐷))
39 f1oeq1 6810 . . . . . . 7 ((log ↾ 𝐷) = (exp ↾ (log “ 𝐷)) → ((log ↾ 𝐷):(log “ 𝐷)–1-1-onto𝐷 ↔ (exp ↾ (log “ 𝐷)):(log “ 𝐷)–1-1-onto𝐷))
4038, 39ax-mp 5 . . . . . 6 ((log ↾ 𝐷):(log “ 𝐷)–1-1-onto𝐷 ↔ (exp ↾ (log “ 𝐷)):(log “ 𝐷)–1-1-onto𝐷)
4116, 40mpbi 233 . . . . 5 (exp ↾ (log “ 𝐷)):(log “ 𝐷)–1-1-onto𝐷
4241a1i 11 . . . 4 (⊤ → (exp ↾ (log “ 𝐷)):(log “ 𝐷)–1-1-onto𝐷)
4338cnveqi 5862 . . . . . 6 (log ↾ 𝐷) = (exp ↾ (log “ 𝐷))
44 relres 6006 . . . . . . 7 Rel (log ↾ 𝐷)
45 dfrel2 6189 . . . . . . 7 (Rel (log ↾ 𝐷) ↔ (log ↾ 𝐷) = (log ↾ 𝐷))
4644, 45mpbi 233 . . . . . 6 (log ↾ 𝐷) = (log ↾ 𝐷)
4743, 46eqtr3i 2788 . . . . 5 (exp ↾ (log “ 𝐷)) = (log ↾ 𝐷)
48 f1of 6822 . . . . . . 7 ((log ↾ 𝐷):𝐷1-1-onto→(log “ 𝐷) → (log ↾ 𝐷):𝐷⟶(log “ 𝐷))
4914, 48mp1i 14 . . . . . 6 (⊤ → (log ↾ 𝐷):𝐷⟶(log “ 𝐷))
50 imassrn 6075 . . . . . . . 8 (log “ 𝐷) ⊆ ran log
51 logrncn 26705 . . . . . . . . 9 (𝑥 ∈ ran log → 𝑥 ∈ ℂ)
5251ssriv 3942 . . . . . . . 8 ran log ⊆ ℂ
5350, 52sstri 3947 . . . . . . 7 (log “ 𝐷) ⊆ ℂ
546logcn 26790 . . . . . . 7 (log ↾ 𝐷) ∈ (𝐷cn→ℂ)
55 cncfcdm 25038 . . . . . . 7 (((log “ 𝐷) ⊆ ℂ ∧ (log ↾ 𝐷) ∈ (𝐷cn→ℂ)) → ((log ↾ 𝐷) ∈ (𝐷cn→(log “ 𝐷)) ↔ (log ↾ 𝐷):𝐷⟶(log “ 𝐷)))
5653, 54, 55mp2an 704 . . . . . 6 ((log ↾ 𝐷) ∈ (𝐷cn→(log “ 𝐷)) ↔ (log ↾ 𝐷):𝐷⟶(log “ 𝐷))
5749, 56sylibr 237 . . . . 5 (⊤ → (log ↾ 𝐷) ∈ (𝐷cn→(log “ 𝐷)))
5847, 57eqeltrid 2867 . . . 4 (⊤ → (exp ↾ (log “ 𝐷)) ∈ (𝐷cn→(log “ 𝐷)))
59 ssid 3960 . . . . . . . . 9 ℂ ⊆ ℂ
601, 3dvres 26051 . . . . . . . . 9 (((ℂ ⊆ ℂ ∧ exp:ℂ⟶ℂ) ∧ (ℂ ⊆ ℂ ∧ (log “ 𝐷) ⊆ ℂ)) → (ℂ D (exp ↾ (log “ 𝐷))) = ((ℂ D exp) ↾ ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷))))
6159, 20, 59, 53, 60mp4an 705 . . . . . . . 8 (ℂ D (exp ↾ (log “ 𝐷))) = ((ℂ D exp) ↾ ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷)))
62 dvef 26120 . . . . . . . . 9 (ℂ D exp) = exp
631cnfldtop 24921 . . . . . . . . . 10 (TopOpen‘ℂfld) ∈ Top
646dvloglem 26791 . . . . . . . . . 10 (log “ 𝐷) ∈ (TopOpen‘ℂfld)
65 isopn3i 23220 . . . . . . . . . 10 (((TopOpen‘ℂfld) ∈ Top ∧ (log “ 𝐷) ∈ (TopOpen‘ℂfld)) → ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷)) = (log “ 𝐷))
6663, 64, 65mp2an 704 . . . . . . . . 9 ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷)) = (log “ 𝐷)
6762, 66reseq12i 5978 . . . . . . . 8 ((ℂ D exp) ↾ ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷))) = (exp ↾ (log “ 𝐷))
6861, 67eqtri 2786 . . . . . . 7 (ℂ D (exp ↾ (log “ 𝐷))) = (exp ↾ (log “ 𝐷))
6968dmeqi 5896 . . . . . 6 dom (ℂ D (exp ↾ (log “ 𝐷))) = dom (exp ↾ (log “ 𝐷))
70 dmres 6013 . . . . . 6 dom (exp ↾ (log “ 𝐷)) = ((log “ 𝐷) ∩ dom exp)
7120fdmi 6719 . . . . . . . 8 dom exp = ℂ
7253, 71sseqtrri 3987 . . . . . . 7 (log “ 𝐷) ⊆ dom exp
73 dfss2 3924 . . . . . . 7 ((log “ 𝐷) ⊆ dom exp ↔ ((log “ 𝐷) ∩ dom exp) = (log “ 𝐷))
7472, 73mpbi 233 . . . . . 6 ((log “ 𝐷) ∩ dom exp) = (log “ 𝐷)
7569, 70, 743eqtri 2790 . . . . 5 dom (ℂ D (exp ↾ (log “ 𝐷))) = (log “ 𝐷)
7675a1i 11 . . . 4 (⊤ → dom (ℂ D (exp ↾ (log “ 𝐷))) = (log “ 𝐷))
77 neirr 2967 . . . . . 6 ¬ 0 ≠ 0
78 resss 6002 . . . . . . . . . . . . 13 ((ℂ D exp) ↾ ((int‘(TopOpen‘ℂfld))‘(log “ 𝐷))) ⊆ (ℂ D exp)
7961, 78eqsstri 3984 . . . . . . . . . . . 12 (ℂ D (exp ↾ (log “ 𝐷))) ⊆ (ℂ D exp)
8079, 62sseqtri 3986 . . . . . . . . . . 11 (ℂ D (exp ↾ (log “ 𝐷))) ⊆ exp
8180rnssi 5932 . . . . . . . . . 10 ran (ℂ D (exp ↾ (log “ 𝐷))) ⊆ ran exp
82 eff2 16156 . . . . . . . . . . 11 exp:ℂ⟶(ℂ ∖ {0})
83 frn 6715 . . . . . . . . . . 11 (exp:ℂ⟶(ℂ ∖ {0}) → ran exp ⊆ (ℂ ∖ {0}))
8482, 83ax-mp 5 . . . . . . . . . 10 ran exp ⊆ (ℂ ∖ {0})
8581, 84sstri 3947 . . . . . . . . 9 ran (ℂ D (exp ↾ (log “ 𝐷))) ⊆ (ℂ ∖ {0})
8685sseli 3934 . . . . . . . 8 (0 ∈ ran (ℂ D (exp ↾ (log “ 𝐷))) → 0 ∈ (ℂ ∖ {0}))
87 eldifsn 4754 . . . . . . . 8 (0 ∈ (ℂ ∖ {0}) ↔ (0 ∈ ℂ ∧ 0 ≠ 0))
8886, 87sylib 221 . . . . . . 7 (0 ∈ ran (ℂ D (exp ↾ (log “ 𝐷))) → (0 ∈ ℂ ∧ 0 ≠ 0))
8988simprd 500 . . . . . 6 (0 ∈ ran (ℂ D (exp ↾ (log “ 𝐷))) → 0 ≠ 0)
9077, 89mto 200 . . . . 5 ¬ 0 ∈ ran (ℂ D (exp ↾ (log “ 𝐷)))
9190a1i 11 . . . 4 (⊤ → ¬ 0 ∈ ran (ℂ D (exp ↾ (log “ 𝐷))))
921, 3, 5, 8, 42, 58, 76, 91dvcnv 26117 . . 3 (⊤ → (ℂ D (exp ↾ (log “ 𝐷))) = (𝑥𝐷 ↦ (1 / ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥)))))
9392mptru 1577 . 2 (ℂ D (exp ↾ (log “ 𝐷))) = (𝑥𝐷 ↦ (1 / ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥))))
9447oveq2i 7423 . 2 (ℂ D (exp ↾ (log “ 𝐷))) = (ℂ D (log ↾ 𝐷))
9568fveq1i 6884 . . . . 5 ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥)) = ((exp ↾ (log “ 𝐷))‘((exp ↾ (log “ 𝐷))‘𝑥))
96 f1ocnvfv2 7277 . . . . . 6 (((exp ↾ (log “ 𝐷)):(log “ 𝐷)–1-1-onto𝐷𝑥𝐷) → ((exp ↾ (log “ 𝐷))‘((exp ↾ (log “ 𝐷))‘𝑥)) = 𝑥)
9741, 96mpan 702 . . . . 5 (𝑥𝐷 → ((exp ↾ (log “ 𝐷))‘((exp ↾ (log “ 𝐷))‘𝑥)) = 𝑥)
9895, 97eqtrid 2810 . . . 4 (𝑥𝐷 → ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥)) = 𝑥)
9998oveq2d 7428 . . 3 (𝑥𝐷 → (1 / ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥))) = (1 / 𝑥))
10099mpteq2ia 5207 . 2 (𝑥𝐷 ↦ (1 / ((ℂ D (exp ↾ (log “ 𝐷)))‘((exp ↾ (log “ 𝐷))‘𝑥)))) = (𝑥𝐷 ↦ (1 / 𝑥))
10193, 94, 1003eqtr3i 2794 1 (ℂ D (log ↾ 𝐷)) = (𝑥𝐷 ↦ (1 / 𝑥))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wb 209  wa 400   = wceq 1570  wtru 1571  wcel 2143  wne 2958  cdif 3903  cin 3905  wss 3906  {csn 4590  {cpr 4592  cmpt 5193  ccnv 5662  dom cdm 5663  ran crn 5664  cres 5665  cima 5666  Rel wrel 5668  Fun wfun 6532  wf 6534  1-1wf1 6535  1-1-ontowf1o 6537  cfv 6538  (class class class)co 7412  cc 11099  cr 11100  0cc0 11101  1c1 11102  -∞cmnf 11242  -cneg 11443   / cdiv 11872  (,]cioc 13374  cim 15151  expce 16116  πcpi 16121  TopOpenctopn 17475  fldccnfld 21503  Topctop 23031  intcnt 23155  cnccncf 25016   D cdv 26003  logclog 26697
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5239  ax-sep 5258  ax-nul 5270  ax-pow 5338  ax-pr 5406  ax-un 7734  ax-inf2 9611  ax-cnex 11157  ax-resscn 11158  ax-1cn 11159  ax-icn 11160  ax-addcl 11161  ax-addrcl 11162  ax-mulcl 11163  ax-mulrcl 11164  ax-mulcom 11165  ax-addass 11166  ax-mulass 11167  ax-distr 11168  ax-i2m1 11169  ax-1ne0 11170  ax-1rid 11171  ax-rnegex 11172  ax-rrecex 11173  ax-cnre 11174  ax-pre-lttri 11175  ax-pre-lttrn 11176  ax-pre-ltadd 11177  ax-pre-mulgt0 11178  ax-pre-sup 11179  ax-addf 11180
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-nel 3065  df-ral 3080  df-rex 3090  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3746  df-csb 3855  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-pss 3926  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-tp 4595  df-op 4597  df-uni 4874  df-int 4914  df-iun 4959  df-iin 4960  df-br 5111  df-opab 5175  df-mpt 5194  df-tr 5220  df-id 5558  df-eprel 5563  df-po 5571  df-so 5572  df-fr 5616  df-se 5617  df-we 5618  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-isom 6547  df-riota 7369  df-ov 7415  df-oprab 7416  df-mpo 7417  df-of 7676  df-om 7864  df-1st 7987  df-2nd 7988  df-supp 8158  df-frecs 8279  df-wrecs 8310  df-recs 8359  df-rdg 8398  df-1o 8454  df-2o 8455  df-er 8695  df-map 8827  df-pm 8828  df-ixp 8897  df-en 8945  df-dom 8946  df-sdom 8947  df-fin 8948  df-fsupp 9323  df-fi 9372  df-sup 9403  df-inf 9404  df-oi 9473  df-card 9926  df-pnf 11246  df-mnf 11247  df-xr 11248  df-ltxr 11249  df-le 11250  df-sub 11444  df-neg 11445  df-div 11873  df-nn 12235  df-2 12304  df-3 12305  df-4 12306  df-5 12307  df-6 12308  df-7 12309  df-8 12310  df-9 12311  df-n0 12506  df-z 12593  df-dec 12713  df-uz 12864  df-q 12974  df-rp 13018  df-xneg 13138  df-xadd 13139  df-xmul 13140  df-ioo 13377  df-ioc 13378  df-ico 13379  df-icc 13380  df-fz 13537  df-fzo 13685  df-fl 13827  df-mod 13905  df-seq 14040  df-exp 14100  df-fac 14312  df-bc 14341  df-hash 14369  df-shft 15106  df-cj 15152  df-re 15153  df-im 15154  df-sqrt 15288  df-abs 15289  df-limsup 15524  df-clim 15541  df-rlim 15542  df-sum 15740  df-ef 16122  df-sin 16124  df-cos 16125  df-tan 16126  df-pi 16127  df-struct 17208  df-sets 17225  df-slot 17243  df-ndx 17255  df-base 17271  df-ress 17292  df-plusg 17324  df-mulr 17325  df-starv 17326  df-sca 17327  df-vsca 17328  df-ip 17329  df-tset 17330  df-ple 17331  df-ds 17333  df-unif 17334  df-hom 17335  df-cco 17336  df-rest 17476  df-topn 17477  df-0g 17495  df-gsum 17496  df-topgen 17497  df-pt 17498  df-prds 17501  df-xrs 17557  df-qtop 17562  df-imas 17563  df-xps 17565  df-mre 17639  df-mrc 17640  df-acs 17642  df-mgm 18699  df-sgrp 18778  df-mnd 18794  df-submnd 18843  df-mulg 19135  df-cntz 19388  df-cmn 19853  df-psmet 21495  df-xmet 21496  df-met 21497  df-bl 21498  df-mopn 21499  df-fbas 21500  df-fg 21501  df-cnfld 21504  df-top 23032  df-topon 23049  df-topsp 23071  df-bases 23084  df-cld 23157  df-ntr 23158  df-cls 23159  df-nei 23236  df-lp 23274  df-perf 23275  df-cn 23365  df-cnp 23366  df-haus 23453  df-cmp 23525  df-tx 23700  df-hmeo 23893  df-fil 23984  df-fm 24076  df-flim 24077  df-flf 24078  df-xms 24458  df-ms 24459  df-tms 24460  df-cncf 25018  df-limc 26006  df-dv 26007  df-log 26699
This theorem is referenced by:  dvlog2  26796  dvcncxp1  26886  dvatan  27078  lgamgulmlem2  27172  dvasin  38333  readvrec2  43100  readvrec  43101
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