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Mirrors > Home > ILE Home > Th. List > climcvg1n | GIF version |
Description: A Cauchy sequence of complex numbers converges, existence version. The rate of convergence is fixed: all terms after the nth term must be within 𝐶 / 𝑛 of the nth term, where 𝐶 is a constant multiplier. (Contributed by Jim Kingdon, 23-Aug-2021.) |
Ref | Expression |
---|---|
climcvg1n.f | ⊢ (𝜑 → 𝐹:ℕ⟶ℂ) |
climcvg1n.c | ⊢ (𝜑 → 𝐶 ∈ ℝ+) |
climcvg1n.cau | ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) |
Ref | Expression |
---|---|
climcvg1n | ⊢ (𝜑 → 𝐹 ∈ dom ⇝ ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | climcvg1n.f | . 2 ⊢ (𝜑 → 𝐹:ℕ⟶ℂ) | |
2 | climcvg1n.c | . 2 ⊢ (𝜑 → 𝐶 ∈ ℝ+) | |
3 | climcvg1n.cau | . 2 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) | |
4 | eqid 2193 | . 2 ⊢ (𝑥 ∈ ℕ ↦ (ℜ‘(𝐹‘𝑥))) = (𝑥 ∈ ℕ ↦ (ℜ‘(𝐹‘𝑥))) | |
5 | fveq2 5554 | . . . 4 ⊢ (𝑦 = 𝑥 → (𝐹‘𝑦) = (𝐹‘𝑥)) | |
6 | 5 | fveq2d 5558 | . . 3 ⊢ (𝑦 = 𝑥 → (ℑ‘(𝐹‘𝑦)) = (ℑ‘(𝐹‘𝑥))) |
7 | 6 | cbvmptv 4125 | . 2 ⊢ (𝑦 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑦))) = (𝑥 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑥))) |
8 | eqid 2193 | . 2 ⊢ (𝑥 ∈ ℕ ↦ (i · ((𝑦 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑦)))‘𝑥))) = (𝑥 ∈ ℕ ↦ (i · ((𝑦 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑦)))‘𝑥))) | |
9 | 1, 2, 3, 4, 7, 8 | climcvg1nlem 11492 | 1 ⊢ (𝜑 → 𝐹 ∈ dom ⇝ ) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2164 ∀wral 2472 class class class wbr 4029 ↦ cmpt 4090 dom cdm 4659 ⟶wf 5250 ‘cfv 5254 (class class class)co 5918 ℂcc 7870 ici 7874 · cmul 7877 < clt 8054 − cmin 8190 / cdiv 8691 ℕcn 8982 ℤ≥cuz 9592 ℝ+crp 9719 ℜcre 10984 ℑcim 10985 abscabs 11141 ⇝ cli 11421 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-coll 4144 ax-sep 4147 ax-nul 4155 ax-pow 4203 ax-pr 4238 ax-un 4464 ax-setind 4569 ax-iinf 4620 ax-cnex 7963 ax-resscn 7964 ax-1cn 7965 ax-1re 7966 ax-icn 7967 ax-addcl 7968 ax-addrcl 7969 ax-mulcl 7970 ax-mulrcl 7971 ax-addcom 7972 ax-mulcom 7973 ax-addass 7974 ax-mulass 7975 ax-distr 7976 ax-i2m1 7977 ax-0lt1 7978 ax-1rid 7979 ax-0id 7980 ax-rnegex 7981 ax-precex 7982 ax-cnre 7983 ax-pre-ltirr 7984 ax-pre-ltwlin 7985 ax-pre-lttrn 7986 ax-pre-apti 7987 ax-pre-ltadd 7988 ax-pre-mulgt0 7989 ax-pre-mulext 7990 ax-arch 7991 ax-caucvg 7992 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-if 3558 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-iun 3914 df-br 4030 df-opab 4091 df-mpt 4092 df-tr 4128 df-id 4324 df-po 4327 df-iso 4328 df-iord 4397 df-on 4399 df-ilim 4400 df-suc 4402 df-iom 4623 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-res 4671 df-ima 4672 df-iota 5215 df-fun 5256 df-fn 5257 df-f 5258 df-f1 5259 df-fo 5260 df-f1o 5261 df-fv 5262 df-riota 5873 df-ov 5921 df-oprab 5922 df-mpo 5923 df-1st 6193 df-2nd 6194 df-recs 6358 df-frec 6444 df-pnf 8056 df-mnf 8057 df-xr 8058 df-ltxr 8059 df-le 8060 df-sub 8192 df-neg 8193 df-reap 8594 df-ap 8601 df-div 8692 df-inn 8983 df-2 9041 df-3 9042 df-4 9043 df-n0 9241 df-z 9318 df-uz 9593 df-rp 9720 df-seqfrec 10519 df-exp 10610 df-cj 10986 df-re 10987 df-im 10988 df-rsqrt 11142 df-abs 11143 df-clim 11422 |
This theorem is referenced by: cvgratnn 11674 cvgcmp2n 15523 |
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