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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 44615 | . 2 ⊢ (𝜑 → (𝐶C𝑐𝐾) = ((𝐶 FallFac 𝐾) / (!‘𝐾))) |
| 4 | fallfaccl 15943 | . . . 4 ⊢ ((𝐶 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (𝐶 FallFac 𝐾) ∈ ℂ) | |
| 5 | 1, 2, 4 | syl2anc 585 | . . 3 ⊢ (𝜑 → (𝐶 FallFac 𝐾) ∈ ℂ) |
| 6 | faccl 14210 | . . . . 5 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℕ) | |
| 7 | 2, 6 | syl 17 | . . . 4 ⊢ (𝜑 → (!‘𝐾) ∈ ℕ) |
| 8 | 7 | nncnd 12165 | . . 3 ⊢ (𝜑 → (!‘𝐾) ∈ ℂ) |
| 9 | 7 | nnne0d 12199 | . . 3 ⊢ (𝜑 → (!‘𝐾) ≠ 0) |
| 10 | 5, 8, 9 | divcld 11921 | . 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 6493 (class class class)co 7360 ℂcc 11028 / cdiv 11798 ℕcn 12149 ℕ0cn0 12405 !cfa 14200 FallFac cfallfac 15931 C𝑐cbcc 44613 |
| 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 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-inf2 9554 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 ax-pre-sup 11108 |
| 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 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4904 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-se 5579 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-isom 6502 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-oi 9419 df-card 9855 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12150 df-2 12212 df-3 12213 df-n0 12406 df-z 12493 df-uz 12756 df-rp 12910 df-fz 13428 df-fzo 13575 df-seq 13929 df-exp 13989 df-fac 14201 df-hash 14258 df-cj 15026 df-re 15027 df-im 15028 df-sqrt 15162 df-abs 15163 df-clim 15415 df-prod 15831 df-fallfac 15934 df-bcc 44614 |
| This theorem is referenced by: bccm1k 44619 binomcxplemnn0 44626 binomcxplemfrat 44628 binomcxplemradcnv 44629 binomcxplemcvg 44631 binomcxplemdvsum 44632 binomcxplemnotnn0 44633 |
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