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Mirrors > Home > MPE Home > Th. List > eftcl | Structured version Visualization version GIF version |
Description: Closure of a term in the series expansion of the exponential function. (Contributed by Paul Chapman, 11-Sep-2007.) |
Ref | Expression |
---|---|
eftcl | ⊢ ((𝐴 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → ((𝐴↑𝐾) / (!‘𝐾)) ∈ ℂ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | expcl 13850 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (𝐴↑𝐾) ∈ ℂ) | |
2 | faccl 14047 | . . . 4 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℕ) | |
3 | 2 | nncnd 12039 | . . 3 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℂ) |
4 | 3 | adantl 483 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (!‘𝐾) ∈ ℂ) |
5 | facne0 14050 | . . 3 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ≠ 0) | |
6 | 5 | adantl 483 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (!‘𝐾) ≠ 0) |
7 | 1, 4, 6 | divcld 11801 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → ((𝐴↑𝐾) / (!‘𝐾)) ∈ ℂ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 ∈ wcel 2104 ≠ wne 2941 ‘cfv 6458 (class class class)co 7307 ℂcc 10919 0cc0 10921 / cdiv 11682 ℕ0cn0 12283 ↑cexp 13832 !cfa 14037 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-cnex 10977 ax-resscn 10978 ax-1cn 10979 ax-icn 10980 ax-addcl 10981 ax-addrcl 10982 ax-mulcl 10983 ax-mulrcl 10984 ax-mulcom 10985 ax-addass 10986 ax-mulass 10987 ax-distr 10988 ax-i2m1 10989 ax-1ne0 10990 ax-1rid 10991 ax-rnegex 10992 ax-rrecex 10993 ax-cnre 10994 ax-pre-lttri 10995 ax-pre-lttrn 10996 ax-pre-ltadd 10997 ax-pre-mulgt0 10998 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3304 df-reu 3305 df-rab 3306 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11061 df-mnf 11062 df-xr 11063 df-ltxr 11064 df-le 11065 df-sub 11257 df-neg 11258 df-div 11683 df-nn 12024 df-n0 12284 df-z 12370 df-uz 12633 df-seq 13772 df-exp 13833 df-fac 14038 |
This theorem is referenced by: efcllem 15836 eff 15840 efcvg 15843 efcvgfsum 15844 efcj 15850 efaddlem 15851 eftlcvg 15864 eftlcl 15865 eftlub 15867 efsep 15868 eirrlem 15962 subfaclim 33199 expfac 43427 |
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