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Theorem climi 14241
Description: Convergence of a sequence of complex numbers. (Contributed by NM, 11-Jan-2007.) (Revised by Mario Carneiro, 31-Jan-2014.)
Hypotheses
Ref Expression
climi.1 𝑍 = (ℤ𝑀)
climi.2 (𝜑𝑀 ∈ ℤ)
climi.3 (𝜑𝐶 ∈ ℝ+)
climi.4 ((𝜑𝑘𝑍) → (𝐹𝑘) = 𝐵)
climi.5 (𝜑𝐹𝐴)
Assertion
Ref Expression
climi (𝜑 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝐶))
Distinct variable groups:   𝑗,𝑘,𝐴   𝐶,𝑗,𝑘   𝑗,𝐹,𝑘   𝜑,𝑗,𝑘   𝑗,𝑍,𝑘   𝑗,𝑀
Allowed substitution hints:   𝐵(𝑗,𝑘)   𝑀(𝑘)

Proof of Theorem climi
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 climi.3 . 2 (𝜑𝐶 ∈ ℝ+)
2 climi.5 . . . 4 (𝜑𝐹𝐴)
3 climi.1 . . . . 5 𝑍 = (ℤ𝑀)
4 climi.2 . . . . 5 (𝜑𝑀 ∈ ℤ)
5 climrel 14223 . . . . . . 7 Rel ⇝
65brrelexi 5158 . . . . . 6 (𝐹𝐴𝐹 ∈ V)
72, 6syl 17 . . . . 5 (𝜑𝐹 ∈ V)
8 climi.4 . . . . 5 ((𝜑𝑘𝑍) → (𝐹𝑘) = 𝐵)
93, 4, 7, 8clim2 14235 . . . 4 (𝜑 → (𝐹𝐴 ↔ (𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥))))
102, 9mpbid 222 . . 3 (𝜑 → (𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥)))
1110simprd 479 . 2 (𝜑 → ∀𝑥 ∈ ℝ+𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥))
12 breq2 4657 . . . . 5 (𝑥 = 𝐶 → ((abs‘(𝐵𝐴)) < 𝑥 ↔ (abs‘(𝐵𝐴)) < 𝐶))
1312anbi2d 740 . . . 4 (𝑥 = 𝐶 → ((𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥) ↔ (𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝐶)))
1413rexralbidv 3058 . . 3 (𝑥 = 𝐶 → (∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥) ↔ ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝐶)))
1514rspcv 3305 . 2 (𝐶 ∈ ℝ+ → (∀𝑥 ∈ ℝ+𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝑥) → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝐶)))
161, 11, 15sylc 65 1 (𝜑 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐵 ∈ ℂ ∧ (abs‘(𝐵𝐴)) < 𝐶))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384   = wceq 1483  wcel 1990  wral 2912  wrex 2913  Vcvv 3200   class class class wbr 4653  cfv 5888  (class class class)co 6650  cc 9934   < clt 10074  cmin 10266  cz 11377  cuz 11687  +crp 11832  abscabs 13974  cli 14215
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-pre-lttri 10010  ax-pre-lttrn 10011
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-po 5035  df-so 5036  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-neg 10269  df-z 11378  df-uz 11688  df-clim 14219
This theorem is referenced by:  climi2  14242  climi0  14243  climuni  14283  2clim  14303  climcau  14401  caucvgb  14410  stoweidlem7  40224
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