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| Mirrors > Home > MPE Home > Th. List > Mathboxes > bcccl | Structured version Visualization version GIF version | ||
| Description: Closure of the generalized binomial coefficient. (Contributed by Steve Rodriguez, 22-Apr-2020.) |
| Ref | Expression |
|---|---|
| bccval.c | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| bccval.k | ⊢ (𝜑 → 𝐾 ∈ ℕ0) |
| Ref | Expression |
|---|---|
| bcccl | ⊢ (𝜑 → (𝐶C𝑐𝐾) ∈ ℂ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bccval.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 2 | bccval.k | . . 3 ⊢ (𝜑 → 𝐾 ∈ ℕ0) | |
| 3 | 1, 2 | bccval 44765 | . 2 ⊢ (𝜑 → (𝐶C𝑐𝐾) = ((𝐶 FallFac 𝐾) / (!‘𝐾))) |
| 4 | fallfaccl 15981 | . . . 4 ⊢ ((𝐶 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (𝐶 FallFac 𝐾) ∈ ℂ) | |
| 5 | 1, 2, 4 | syl2anc 585 | . . 3 ⊢ (𝜑 → (𝐶 FallFac 𝐾) ∈ ℂ) |
| 6 | faccl 14245 | . . . . 5 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℕ) | |
| 7 | 2, 6 | syl 17 | . . . 4 ⊢ (𝜑 → (!‘𝐾) ∈ ℕ) |
| 8 | 7 | nncnd 12190 | . . 3 ⊢ (𝜑 → (!‘𝐾) ∈ ℂ) |
| 9 | 7 | nnne0d 12227 | . . 3 ⊢ (𝜑 → (!‘𝐾) ≠ 0) |
| 10 | 5, 8, 9 | divcld 11931 | . 2 ⊢ (𝜑 → ((𝐶 FallFac 𝐾) / (!‘𝐾)) ∈ ℂ) |
| 11 | 3, 10 | eqeltrd 2837 | 1 ⊢ (𝜑 → (𝐶C𝑐𝐾) ∈ ℂ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 ‘cfv 6499 (class class class)co 7367 ℂcc 11036 / cdiv 11807 ℕcn 12174 ℕ0cn0 12437 !cfa 14235 FallFac cfallfac 15969 C𝑐cbcc 44763 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5308 ax-pr 5376 ax-un 7689 ax-inf2 9562 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6266 df-ord 6327 df-on 6328 df-lim 6329 df-suc 6330 df-iota 6455 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-isom 6508 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-sup 9355 df-oi 9425 df-card 9863 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-3 12245 df-n0 12438 df-z 12525 df-uz 12789 df-rp 12943 df-fz 13462 df-fzo 13609 df-seq 13964 df-exp 14024 df-fac 14236 df-hash 14293 df-cj 15061 df-re 15062 df-im 15063 df-sqrt 15197 df-abs 15198 df-clim 15450 df-prod 15869 df-fallfac 15972 df-bcc 44764 |
| This theorem is referenced by: bccm1k 44769 binomcxplemnn0 44776 binomcxplemfrat 44778 binomcxplemradcnv 44779 binomcxplemcvg 44781 binomcxplemdvsum 44782 binomcxplemnotnn0 44783 |
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