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Mirrors > Home > MPE Home > Th. List > Mathboxes > bccbc | Structured version Visualization version GIF version |
Description: The binomial coefficient and generalized binomial coefficient are equal when their arguments are nonnegative integers. (Contributed by Steve Rodriguez, 22-Apr-2020.) |
Ref | Expression |
---|---|
bccbc.c | ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
bccbc.k | ⊢ (𝜑 → 𝐾 ∈ ℕ0) |
Ref | Expression |
---|---|
bccbc | ⊢ (𝜑 → (𝑁C𝑐𝐾) = (𝑁C𝐾)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bccbc.c | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ0) | |
2 | 1 | nn0cnd 12225 | . . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
3 | bccbc.k | . . . . 5 ⊢ (𝜑 → 𝐾 ∈ ℕ0) | |
4 | 2, 3 | bccval 41845 | . . . 4 ⊢ (𝜑 → (𝑁C𝑐𝐾) = ((𝑁 FallFac 𝐾) / (!‘𝐾))) |
5 | 4 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...𝑁)) → (𝑁C𝑐𝐾) = ((𝑁 FallFac 𝐾) / (!‘𝐾))) |
6 | bcfallfac 15682 | . . . 4 ⊢ (𝐾 ∈ (0...𝑁) → (𝑁C𝐾) = ((𝑁 FallFac 𝐾) / (!‘𝐾))) | |
7 | 6 | adantl 481 | . . 3 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = ((𝑁 FallFac 𝐾) / (!‘𝐾))) |
8 | 5, 7 | eqtr4d 2781 | . 2 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...𝑁)) → (𝑁C𝑐𝐾) = (𝑁C𝐾)) |
9 | nn0split 13300 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℕ0 → ℕ0 = ((0...𝑁) ∪ (ℤ≥‘(𝑁 + 1)))) | |
10 | 1, 9 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → ℕ0 = ((0...𝑁) ∪ (ℤ≥‘(𝑁 + 1)))) |
11 | 3, 10 | eleqtrd 2841 | . . . . . . 7 ⊢ (𝜑 → 𝐾 ∈ ((0...𝑁) ∪ (ℤ≥‘(𝑁 + 1)))) |
12 | elun 4079 | . . . . . . 7 ⊢ (𝐾 ∈ ((0...𝑁) ∪ (ℤ≥‘(𝑁 + 1))) ↔ (𝐾 ∈ (0...𝑁) ∨ 𝐾 ∈ (ℤ≥‘(𝑁 + 1)))) | |
13 | 11, 12 | sylib 217 | . . . . . 6 ⊢ (𝜑 → (𝐾 ∈ (0...𝑁) ∨ 𝐾 ∈ (ℤ≥‘(𝑁 + 1)))) |
14 | 13 | orcanai 999 | . . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...𝑁)) → 𝐾 ∈ (ℤ≥‘(𝑁 + 1))) |
15 | eluzle 12524 | . . . . . . 7 ⊢ (𝐾 ∈ (ℤ≥‘(𝑁 + 1)) → (𝑁 + 1) ≤ 𝐾) | |
16 | 15 | adantl 481 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (ℤ≥‘(𝑁 + 1))) → (𝑁 + 1) ≤ 𝐾) |
17 | 1 | nn0zd 12353 | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℤ) |
18 | 3 | nn0zd 12353 | . . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ ℤ) |
19 | zltp1le 12300 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑁 < 𝐾 ↔ (𝑁 + 1) ≤ 𝐾)) | |
20 | 17, 18, 19 | syl2anc 583 | . . . . . . 7 ⊢ (𝜑 → (𝑁 < 𝐾 ↔ (𝑁 + 1) ≤ 𝐾)) |
21 | 20 | adantr 480 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (ℤ≥‘(𝑁 + 1))) → (𝑁 < 𝐾 ↔ (𝑁 + 1) ≤ 𝐾)) |
22 | 16, 21 | mpbird 256 | . . . . 5 ⊢ ((𝜑 ∧ 𝐾 ∈ (ℤ≥‘(𝑁 + 1))) → 𝑁 < 𝐾) |
23 | 14, 22 | syldan 590 | . . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...𝑁)) → 𝑁 < 𝐾) |
24 | 1 | nn0ge0d 12226 | . . . . . 6 ⊢ (𝜑 → 0 ≤ 𝑁) |
25 | 0zd 12261 | . . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℤ) | |
26 | elfzo 13318 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℤ ∧ 0 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑁 ∈ (0..^𝐾) ↔ (0 ≤ 𝑁 ∧ 𝑁 < 𝐾))) | |
27 | 17, 25, 18, 26 | syl3anc 1369 | . . . . . . . 8 ⊢ (𝜑 → (𝑁 ∈ (0..^𝐾) ↔ (0 ≤ 𝑁 ∧ 𝑁 < 𝐾))) |
28 | 27 | biimpar 477 | . . . . . . 7 ⊢ ((𝜑 ∧ (0 ≤ 𝑁 ∧ 𝑁 < 𝐾)) → 𝑁 ∈ (0..^𝐾)) |
29 | fzoval 13317 | . . . . . . . . . . 11 ⊢ (𝐾 ∈ ℤ → (0..^𝐾) = (0...(𝐾 − 1))) | |
30 | 18, 29 | syl 17 | . . . . . . . . . 10 ⊢ (𝜑 → (0..^𝐾) = (0...(𝐾 − 1))) |
31 | 30 | eleq2d 2824 | . . . . . . . . 9 ⊢ (𝜑 → (𝑁 ∈ (0..^𝐾) ↔ 𝑁 ∈ (0...(𝐾 − 1)))) |
32 | 31 | biimpa 476 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑁 ∈ (0..^𝐾)) → 𝑁 ∈ (0...(𝐾 − 1))) |
33 | 2, 3 | bcc0 41847 | . . . . . . . . 9 ⊢ (𝜑 → ((𝑁C𝑐𝐾) = 0 ↔ 𝑁 ∈ (0...(𝐾 − 1)))) |
34 | 33 | biimpar 477 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑁 ∈ (0...(𝐾 − 1))) → (𝑁C𝑐𝐾) = 0) |
35 | 32, 34 | syldan 590 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑁 ∈ (0..^𝐾)) → (𝑁C𝑐𝐾) = 0) |
36 | 28, 35 | syldan 590 | . . . . . 6 ⊢ ((𝜑 ∧ (0 ≤ 𝑁 ∧ 𝑁 < 𝐾)) → (𝑁C𝑐𝐾) = 0) |
37 | 24, 36 | sylanr1 678 | . . . . 5 ⊢ ((𝜑 ∧ (𝜑 ∧ 𝑁 < 𝐾)) → (𝑁C𝑐𝐾) = 0) |
38 | 37 | anabss5 664 | . . . 4 ⊢ ((𝜑 ∧ 𝑁 < 𝐾) → (𝑁C𝑐𝐾) = 0) |
39 | 23, 38 | syldan 590 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...𝑁)) → (𝑁C𝑐𝐾) = 0) |
40 | 1, 18 | jca 511 | . . . 4 ⊢ (𝜑 → (𝑁 ∈ ℕ0 ∧ 𝐾 ∈ ℤ)) |
41 | bcval3 13948 | . . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐾 ∈ ℤ ∧ ¬ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = 0) | |
42 | 41 | 3expa 1116 | . . . 4 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐾 ∈ ℤ) ∧ ¬ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = 0) |
43 | 40, 42 | sylan 579 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...𝑁)) → (𝑁C𝐾) = 0) |
44 | 39, 43 | eqtr4d 2781 | . 2 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...𝑁)) → (𝑁C𝑐𝐾) = (𝑁C𝐾)) |
45 | 8, 44 | pm2.61dan 809 | 1 ⊢ (𝜑 → (𝑁C𝑐𝐾) = (𝑁C𝐾)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∨ wo 843 = wceq 1539 ∈ wcel 2108 ∪ cun 3881 class class class wbr 5070 ‘cfv 6418 (class class class)co 7255 0cc0 10802 1c1 10803 + caddc 10805 < clt 10940 ≤ cle 10941 − cmin 11135 / cdiv 11562 ℕ0cn0 12163 ℤcz 12249 ℤ≥cuz 12511 ...cfz 13168 ..^cfzo 13311 !cfa 13915 Ccbc 13944 FallFac cfallfac 15642 C𝑐cbcc 41843 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-seq 13650 df-exp 13711 df-fac 13916 df-bc 13945 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-clim 15125 df-prod 15544 df-fallfac 15645 df-bcc 41844 |
This theorem is referenced by: binomcxplemnn0 41856 |
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