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| Mirrors > Home > ILE Home > Th. List > efcllem | GIF version | ||
| Description: Lemma for efcl 12375. The series that defines the exponential function converges. (Contributed by NM, 26-Apr-2005.) (Revised by Jim Kingdon, 8-Dec-2022.) |
| Ref | Expression |
|---|---|
| efcllem.1 | ⊢ 𝐹 = (𝑛 ∈ ℕ0 ↦ ((𝐴↑𝑛) / (!‘𝑛))) |
| Ref | Expression |
|---|---|
| efcllem | ⊢ (𝐴 ∈ ℂ → seq0( + , 𝐹) ∈ dom ⇝ ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 9324 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 2 | 1 | a1i 9 | . . . 4 ⊢ (𝐴 ∈ ℂ → 2 ∈ ℝ) |
| 3 | abscl 11761 | . . . 4 ⊢ (𝐴 ∈ ℂ → (abs‘𝐴) ∈ ℝ) | |
| 4 | 2, 3 | remulcld 8320 | . . 3 ⊢ (𝐴 ∈ ℂ → (2 · (abs‘𝐴)) ∈ ℝ) |
| 5 | arch 9510 | . . 3 ⊢ ((2 · (abs‘𝐴)) ∈ ℝ → ∃𝑗 ∈ ℕ (2 · (abs‘𝐴)) < 𝑗) | |
| 6 | 4, 5 | syl 14 | . 2 ⊢ (𝐴 ∈ ℂ → ∃𝑗 ∈ ℕ (2 · (abs‘𝐴)) < 𝑗) |
| 7 | efcllem.1 | . . 3 ⊢ 𝐹 = (𝑛 ∈ ℕ0 ↦ ((𝐴↑𝑛) / (!‘𝑛))) | |
| 8 | simpl 109 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝑗 ∈ ℕ ∧ (2 · (abs‘𝐴)) < 𝑗)) → 𝐴 ∈ ℂ) | |
| 9 | simprl 531 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝑗 ∈ ℕ ∧ (2 · (abs‘𝐴)) < 𝑗)) → 𝑗 ∈ ℕ) | |
| 10 | simprr 533 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝑗 ∈ ℕ ∧ (2 · (abs‘𝐴)) < 𝑗)) → (2 · (abs‘𝐴)) < 𝑗) | |
| 11 | 7, 8, 9, 10 | efcllemp 12369 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝑗 ∈ ℕ ∧ (2 · (abs‘𝐴)) < 𝑗)) → seq0( + , 𝐹) ∈ dom ⇝ ) |
| 12 | 6, 11 | rexlimddv 2667 | 1 ⊢ (𝐴 ∈ ℂ → seq0( + , 𝐹) ∈ dom ⇝ ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2205 ∃wrex 2523 class class class wbr 4114 ↦ cmpt 4176 dom cdm 4754 ‘cfv 5357 (class class class)co 6058 ℂcc 8141 ℝcr 8142 0cc0 8143 + caddc 8146 · cmul 8148 < clt 8324 / cdiv 8963 ℕcn 9254 2c2 9305 ℕ0cn0 9513 seqcseq 10833 ↑cexp 10924 !cfa 11112 abscabs 11707 ⇝ cli 11988 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4230 ax-sep 4233 ax-nul 4241 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-iinf 4715 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-mulrcl 8242 ax-addcom 8243 ax-mulcom 8244 ax-addass 8245 ax-mulass 8246 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-1rid 8250 ax-0id 8251 ax-rnegex 8252 ax-precex 8253 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-apti 8258 ax-pre-ltadd 8259 ax-pre-mulgt0 8260 ax-pre-mulext 8261 ax-arch 8262 ax-caucvg 8263 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-if 3625 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-tr 4214 df-id 4419 df-po 4422 df-iso 4423 df-iord 4492 df-on 4494 df-ilim 4495 df-suc 4497 df-iom 4718 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-isom 5366 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-recs 6549 df-irdg 6614 df-frec 6635 df-1o 6660 df-oadd 6664 df-er 6780 df-en 6989 df-dom 6990 df-fin 6991 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-reap 8866 df-ap 8873 df-div 8964 df-inn 9255 df-2 9313 df-3 9314 df-4 9315 df-n0 9514 df-z 9595 df-uz 9872 df-q 9970 df-rp 10005 df-ico 10246 df-fz 10362 df-fzo 10499 df-seqfrec 10834 df-exp 10925 df-fac 11113 df-ihash 11164 df-cj 11552 df-re 11553 df-im 11554 df-rsqrt 11708 df-abs 11709 df-clim 11989 df-sumdc 12064 |
| This theorem is referenced by: efval 12372 eff 12374 efcvg 12377 reefcl 12379 efaddlem 12385 eftlcvg 12398 effsumlt 12403 eflegeo 12412 eirraplem 12488 |
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