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| Mirrors > Home > ILE Home > Th. List > efcllem | GIF version | ||
| Description: Lemma for efcl 12286. 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 9256 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 2 | 1 | a1i 9 | . . . 4 ⊢ (𝐴 ∈ ℂ → 2 ∈ ℝ) |
| 3 | abscl 11672 | . . . 4 ⊢ (𝐴 ∈ ℂ → (abs‘𝐴) ∈ ℝ) | |
| 4 | 2, 3 | remulcld 8253 | . . 3 ⊢ (𝐴 ∈ ℂ → (2 · (abs‘𝐴)) ∈ ℝ) |
| 5 | arch 9442 | . . 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 12280 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝑗 ∈ ℕ ∧ (2 · (abs‘𝐴)) < 𝑗)) → seq0( + , 𝐹) ∈ dom ⇝ ) |
| 12 | 6, 11 | rexlimddv 2656 | 1 ⊢ (𝐴 ∈ ℂ → seq0( + , 𝐹) ∈ dom ⇝ ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2202 ∃wrex 2512 class class class wbr 4093 ↦ cmpt 4155 dom cdm 4731 ‘cfv 5333 (class class class)co 6028 ℂcc 8073 ℝcr 8074 0cc0 8075 + caddc 8078 · cmul 8080 < clt 8257 / cdiv 8895 ℕcn 9186 2c2 9237 ℕ0cn0 9445 seqcseq 10753 ↑cexp 10844 !cfa 11031 abscabs 11618 ⇝ cli 11899 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 ax-pre-mulext 8193 ax-arch 8194 ax-caucvg 8195 |
| 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 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-isom 5342 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-irdg 6579 df-frec 6600 df-1o 6625 df-oadd 6629 df-er 6745 df-en 6953 df-dom 6954 df-fin 6955 df-pnf 8259 df-mnf 8260 df-xr 8261 df-ltxr 8262 df-le 8263 df-sub 8395 df-neg 8396 df-reap 8798 df-ap 8805 df-div 8896 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-n0 9446 df-z 9523 df-uz 9799 df-q 9897 df-rp 9932 df-ico 10172 df-fz 10287 df-fzo 10421 df-seqfrec 10754 df-exp 10845 df-fac 11032 df-ihash 11082 df-cj 11463 df-re 11464 df-im 11465 df-rsqrt 11619 df-abs 11620 df-clim 11900 df-sumdc 11975 |
| This theorem is referenced by: efval 12283 eff 12285 efcvg 12288 reefcl 12290 efaddlem 12296 eftlcvg 12309 effsumlt 12314 eflegeo 12323 eirraplem 12399 |
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