| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > climbddf | Structured version Visualization version GIF version | ||
| Description: A converging sequence of complex numbers is bounded. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
| Ref | Expression |
|---|---|
| climbddf.1 | ⊢ Ⅎ𝑘𝐹 |
| climbddf.2 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| Ref | Expression |
|---|---|
| climbddf | ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → ∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 (abs‘(𝐹‘𝑘)) ≤ 𝑥) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1136 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → 𝑀 ∈ ℤ) | |
| 2 | simp2 1137 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → 𝐹 ∈ dom ⇝ ) | |
| 3 | nfv 1915 | . . . . . 6 ⊢ Ⅎ𝑗(𝐹‘𝑘) ∈ ℂ | |
| 4 | climbddf.1 | . . . . . . . 8 ⊢ Ⅎ𝑘𝐹 | |
| 5 | nfcv 2895 | . . . . . . . 8 ⊢ Ⅎ𝑘𝑗 | |
| 6 | 4, 5 | nffv 6838 | . . . . . . 7 ⊢ Ⅎ𝑘(𝐹‘𝑗) |
| 7 | nfcv 2895 | . . . . . . 7 ⊢ Ⅎ𝑘ℂ | |
| 8 | 6, 7 | nfel 2910 | . . . . . 6 ⊢ Ⅎ𝑘(𝐹‘𝑗) ∈ ℂ |
| 9 | fveq2 6828 | . . . . . . 7 ⊢ (𝑘 = 𝑗 → (𝐹‘𝑘) = (𝐹‘𝑗)) | |
| 10 | 9 | eleq1d 2818 | . . . . . 6 ⊢ (𝑘 = 𝑗 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑗) ∈ ℂ)) |
| 11 | 3, 8, 10 | cbvralw 3275 | . . . . 5 ⊢ (∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ ↔ ∀𝑗 ∈ 𝑍 (𝐹‘𝑗) ∈ ℂ) |
| 12 | 11 | biimpi 216 | . . . 4 ⊢ (∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ → ∀𝑗 ∈ 𝑍 (𝐹‘𝑗) ∈ ℂ) |
| 13 | 12 | 3ad2ant3 1135 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → ∀𝑗 ∈ 𝑍 (𝐹‘𝑗) ∈ ℂ) |
| 14 | climbddf.2 | . . . 4 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 15 | 14 | climbdd 15581 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑗 ∈ 𝑍 (𝐹‘𝑗) ∈ ℂ) → ∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 (abs‘(𝐹‘𝑗)) ≤ 𝑥) |
| 16 | 1, 2, 13, 15 | syl3anc 1373 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → ∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 (abs‘(𝐹‘𝑗)) ≤ 𝑥) |
| 17 | nfcv 2895 | . . . . . 6 ⊢ Ⅎ𝑘abs | |
| 18 | 17, 6 | nffv 6838 | . . . . 5 ⊢ Ⅎ𝑘(abs‘(𝐹‘𝑗)) |
| 19 | nfcv 2895 | . . . . 5 ⊢ Ⅎ𝑘 ≤ | |
| 20 | nfcv 2895 | . . . . 5 ⊢ Ⅎ𝑘𝑥 | |
| 21 | 18, 19, 20 | nfbr 5140 | . . . 4 ⊢ Ⅎ𝑘(abs‘(𝐹‘𝑗)) ≤ 𝑥 |
| 22 | nfv 1915 | . . . 4 ⊢ Ⅎ𝑗(abs‘(𝐹‘𝑘)) ≤ 𝑥 | |
| 23 | 2fveq3 6833 | . . . . 5 ⊢ (𝑗 = 𝑘 → (abs‘(𝐹‘𝑗)) = (abs‘(𝐹‘𝑘))) | |
| 24 | 23 | breq1d 5103 | . . . 4 ⊢ (𝑗 = 𝑘 → ((abs‘(𝐹‘𝑗)) ≤ 𝑥 ↔ (abs‘(𝐹‘𝑘)) ≤ 𝑥)) |
| 25 | 21, 22, 24 | cbvralw 3275 | . . 3 ⊢ (∀𝑗 ∈ 𝑍 (abs‘(𝐹‘𝑗)) ≤ 𝑥 ↔ ∀𝑘 ∈ 𝑍 (abs‘(𝐹‘𝑘)) ≤ 𝑥) |
| 26 | 25 | rexbii 3080 | . 2 ⊢ (∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 (abs‘(𝐹‘𝑗)) ≤ 𝑥 ↔ ∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 (abs‘(𝐹‘𝑘)) ≤ 𝑥) |
| 27 | 16, 26 | sylib 218 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ∧ ∀𝑘 ∈ 𝑍 (𝐹‘𝑘) ∈ ℂ) → ∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 (abs‘(𝐹‘𝑘)) ≤ 𝑥) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 Ⅎwnfc 2880 ∀wral 3048 ∃wrex 3057 class class class wbr 5093 dom cdm 5619 ‘cfv 6486 ℂcc 11011 ℝcr 11012 ≤ cle 11154 ℤcz 12475 ℤ≥cuz 12738 abscabs 15143 ⇝ cli 15393 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 ax-pre-sup 11091 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-fin 8879 df-sup 9333 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-div 11782 df-nn 12133 df-2 12195 df-3 12196 df-n0 12389 df-z 12476 df-uz 12739 df-rp 12893 df-fz 13410 df-seq 13911 df-exp 13971 df-cj 15008 df-re 15009 df-im 15010 df-sqrt 15144 df-abs 15145 df-clim 15397 |
| This theorem is referenced by: climinf2mpt 45836 climinf3 45838 |
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