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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 44350 | . 2 ⊢ (𝜑 → (𝐶C𝑐𝐾) = ((𝐶 FallFac 𝐾) / (!‘𝐾))) |
| 4 | fallfaccl 15915 | . . . 4 ⊢ ((𝐶 ∈ ℂ ∧ 𝐾 ∈ ℕ0) → (𝐶 FallFac 𝐾) ∈ ℂ) | |
| 5 | 1, 2, 4 | syl2anc 584 | . . 3 ⊢ (𝜑 → (𝐶 FallFac 𝐾) ∈ ℂ) |
| 6 | faccl 14182 | . . . . 5 ⊢ (𝐾 ∈ ℕ0 → (!‘𝐾) ∈ ℕ) | |
| 7 | 2, 6 | syl 17 | . . . 4 ⊢ (𝜑 → (!‘𝐾) ∈ ℕ) |
| 8 | 7 | nncnd 12133 | . . 3 ⊢ (𝜑 → (!‘𝐾) ∈ ℂ) |
| 9 | 7 | nnne0d 12167 | . . 3 ⊢ (𝜑 → (!‘𝐾) ≠ 0) |
| 10 | 5, 8, 9 | divcld 11889 | . 2 ⊢ (𝜑 → ((𝐶 FallFac 𝐾) / (!‘𝐾)) ∈ ℂ) |
| 11 | 3, 10 | eqeltrd 2829 | 1 ⊢ (𝜑 → (𝐶C𝑐𝐾) ∈ ℂ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2110 ‘cfv 6477 (class class class)co 7341 ℂcc 10996 / cdiv 11766 ℕcn 12117 ℕ0cn0 12373 !cfa 14172 FallFac cfallfac 15903 C𝑐cbcc 44348 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 ax-inf2 9526 ax-cnex 11054 ax-resscn 11055 ax-1cn 11056 ax-icn 11057 ax-addcl 11058 ax-addrcl 11059 ax-mulcl 11060 ax-mulrcl 11061 ax-mulcom 11062 ax-addass 11063 ax-mulass 11064 ax-distr 11065 ax-i2m1 11066 ax-1ne0 11067 ax-1rid 11068 ax-rnegex 11069 ax-rrecex 11070 ax-cnre 11071 ax-pre-lttri 11072 ax-pre-lttrn 11073 ax-pre-ltadd 11074 ax-pre-mulgt0 11075 ax-pre-sup 11076 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3344 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4858 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-se 5568 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6244 df-ord 6305 df-on 6306 df-lim 6307 df-suc 6308 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-isom 6486 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-om 7792 df-1st 7916 df-2nd 7917 df-frecs 8206 df-wrecs 8237 df-recs 8286 df-rdg 8324 df-1o 8380 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-fin 8868 df-sup 9321 df-oi 9391 df-card 9824 df-pnf 11140 df-mnf 11141 df-xr 11142 df-ltxr 11143 df-le 11144 df-sub 11338 df-neg 11339 df-div 11767 df-nn 12118 df-2 12180 df-3 12181 df-n0 12374 df-z 12461 df-uz 12725 df-rp 12883 df-fz 13400 df-fzo 13547 df-seq 13901 df-exp 13961 df-fac 14173 df-hash 14230 df-cj 14998 df-re 14999 df-im 15000 df-sqrt 15134 df-abs 15135 df-clim 15387 df-prod 15803 df-fallfac 15906 df-bcc 44349 |
| This theorem is referenced by: bccm1k 44354 binomcxplemnn0 44361 binomcxplemfrat 44363 binomcxplemradcnv 44364 binomcxplemcvg 44366 binomcxplemdvsum 44367 binomcxplemnotnn0 44368 |
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