prmdvdsbc - Metamath Proof Explorer

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Theorem prmdvdsbc 16775

Description: Condition for a prime number to divide a binomial coefficient. (Contributed by Thierry Arnoux, 17-Sep-2023.)

**Assertion**
Ref	Expression
prmdvdsbc	⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ (𝑃C𝑁))

**Proof of Theorem prmdvdsbc**
Step	Hyp	Ref	Expression
1		eqid 2765	. . 3 ⊢ ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁)))
2		simpl 487	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℙ)
3		prmnn 16722	. . . . . . . . . 10 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
4	3	nnzd 12608	. . . . . . . . 9 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ)
5		1nn0 12511	. . . . . . . . 9 ⊢ 1 ∈ ℕ₀
6		eluzmn 12860	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ 1 ∈ ℕ₀) → 𝑃 ∈ (ℤ_≥‘(𝑃 − 1)))
7	4, 5, 6	sylancl 597	. . . . . . . 8 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ_≥‘(𝑃 − 1)))
8		fzss2 13583	. . . . . . . 8 ⊢ (𝑃 ∈ (ℤ_≥‘(𝑃 − 1)) → (1...(𝑃 − 1)) ⊆ (1...𝑃))
9	7, 8	syl 18	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → (1...(𝑃 − 1)) ⊆ (1...𝑃))
10		fz1ssfz0 13642	. . . . . . 7 ⊢ (1...𝑃) ⊆ (0...𝑃)
11	9, 10	sstrdi 3951	. . . . . 6 ⊢ (𝑃 ∈ ℙ → (1...(𝑃 − 1)) ⊆ (0...𝑃))
12	11	sselda 3939	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ (0...𝑃))
13		bcval2 14332	. . . . 5 ⊢ (𝑁 ∈ (0...𝑃) → (𝑃C𝑁) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
14	12, 13	syl 18	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
15	3	nnnn0d 12556	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ₀)
16	15	adantr 485	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℕ₀)
17		elfzelz 13543	. . . . . . 7 ⊢ (𝑁 ∈ (1...(𝑃 − 1)) → 𝑁 ∈ ℤ)
18	17	adantl 486	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℤ)
19		bccl 14349	. . . . . 6 ⊢ ((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℤ) → (𝑃C𝑁) ∈ ℕ₀)
20	16, 18, 19	syl2anc 595	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) ∈ ℕ₀)
21	20	nn0zd 12607	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) ∈ ℤ)
22	14, 21	eqeltrrd 2866	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))) ∈ ℤ)
23		elfznn 13572	. . . . . . . . 9 ⊢ (𝑁 ∈ (1...(𝑃 − 1)) → 𝑁 ∈ ℕ)
24	23	adantl 486	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℕ)
25	24	nnnn0d 12556	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℕ₀)
26		1zzd 12616	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 1 ∈ ℤ)
27	4	adantr 485	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℤ)
28		simpr 489	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ (1...(𝑃 − 1)))
29		elfzm11 13614	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝑁 ∈ (1...(𝑃 − 1)) ↔ (𝑁 ∈ ℤ ∧ 1 ≤ 𝑁 ∧ 𝑁 < 𝑃)))
30	29	biimpa 481	. . . . . . . . 9 ⊢ (((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑁 ∈ ℤ ∧ 1 ≤ 𝑁 ∧ 𝑁 < 𝑃))
31	30	simp3d 1160	. . . . . . . 8 ⊢ (((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 < 𝑃)
32	26, 27, 28, 31	syl21anc 850	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 < 𝑃)
33		ltsubnn0 12546	. . . . . . . 8 ⊢ ((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑁 < 𝑃 → (𝑃 − 𝑁) ∈ ℕ₀))
34	33	imp 411	. . . . . . 7 ⊢ (((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑁 < 𝑃) → (𝑃 − 𝑁) ∈ ℕ₀)
35	16, 25, 32, 34	syl21anc 850	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃 − 𝑁) ∈ ℕ₀)
36	35	faccld 14311	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℕ)
37	36	nnzd 12608	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℤ)
38	25	faccld 14311	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℕ)
39	38	nnzd 12608	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℤ)
40	37, 39	zmulcld 12697	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ∈ ℤ)
41	37	zcnd 12692	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℂ)
42	39	zcnd 12692	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℂ)
43		facne0 14313	. . . . 5 ⊢ ((𝑃 − 𝑁) ∈ ℕ₀ → (!‘(𝑃 − 𝑁)) ≠ 0)
44	35, 43	syl 18	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ≠ 0)
45		facne0 14313	. . . . 5 ⊢ (𝑁 ∈ ℕ₀ → (!‘𝑁) ≠ 0)
46	25, 45	syl 18	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ≠ 0)
47	41, 42, 44, 46	mulne0d 11854	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ≠ 0)
48		uzid 12868	. . . . . 6 ⊢ (𝑃 ∈ ℤ → 𝑃 ∈ (ℤ_≥‘𝑃))
49	4, 48	syl 18	. . . . 5 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ_≥‘𝑃))
50		dvdsfac 16374	. . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ 𝑃 ∈ (ℤ_≥‘𝑃)) → 𝑃 ∥ (!‘𝑃))
51	3, 49, 50	syl2anc 595	. . . 4 ⊢ (𝑃 ∈ ℙ → 𝑃 ∥ (!‘𝑃))
52	51	adantr 485	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ (!‘𝑃))
53	16	nn0red 12557	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℝ)
54	24	nnrpd 13049	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℝ⁺)
55	53, 54	ltsubrpd 13083	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃 − 𝑁) < 𝑃)
56		prmndvdsfaclt 16774	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ (𝑃 − 𝑁) ∈ ℕ₀) → ((𝑃 − 𝑁) < 𝑃 → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁))))
57	56	imp 411	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ (𝑃 − 𝑁) ∈ ℕ₀) ∧ (𝑃 − 𝑁) < 𝑃) → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)))
58	2, 35, 55, 57	syl21anc 850	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)))
59		prmndvdsfaclt 16774	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ ℕ₀) → (𝑁 < 𝑃 → ¬ 𝑃 ∥ (!‘𝑁)))
60	59	imp 411	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑁 < 𝑃) → ¬ 𝑃 ∥ (!‘𝑁))
61	2, 25, 32, 60	syl21anc 850	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ (!‘𝑁))
62		ioran 999	. . . . . 6 ⊢ (¬ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁)) ↔ (¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)) ∧ ¬ 𝑃 ∥ (!‘𝑁)))
63		euclemma 16762	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ↔ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁))))
64	63	biimpd 232	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) → (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁))))
65	64	con3d 153	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (¬ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁)) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
66	62, 65	biimtrrid 246	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → ((¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)) ∧ ¬ 𝑃 ∥ (!‘𝑁)) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
67	66	imp 411	. . . 4 ⊢ (((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) ∧ (¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)) ∧ ¬ 𝑃 ∥ (!‘𝑁))) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)))
68	2, 37, 39, 58, 61, 67	syl32anc 1401	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)))
69	1, 2, 22, 40, 47, 52, 68	dvdszzq 16770	. 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
70	69, 14	breqtrrd 5133	1 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ (𝑃C𝑁))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 400 ∨ wo 860 ∧ w3a 1101 = wceq 1563 ∈ wcel 2145 ≠ wne 2960 ⊆ wss 3907 class class class wbr 5105 ‘cfv 6525 (class class class)co 7400 0cc0 11088 1c1 11089 · cmul 11093 < clt 11231 ≤ cle 11232 − cmin 11429 / cdiv 11859 ℕcn 12224 ℕ₀cn0 12495 ℤcz 12582 ℤ_≥cuz 12853 ...cfz 13526 !cfa 14300 Ccbc 14329 ∥ cdvds 16300 ℙcprime 16719

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 ax-pre-sup 11166

This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5547 df-eprel 5552 df-po 5560 df-so 5561 df-fr 5605 df-we 5607 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-pred 6292 df-ord 6353 df-on 6354 df-lim 6355 df-suc 6356 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-1st 7974 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-1o 8441 df-2o 8442 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-fin 8935 df-sup 9390 df-inf 9391 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12225 df-2 12294 df-3 12295 df-n0 12496 df-z 12583 df-uz 12854 df-rp 13008 df-fz 13527 df-fl 13816 df-mod 13894 df-seq 14029 df-exp 14089 df-fac 14301 df-bc 14330 df-cj 15140 df-re 15141 df-im 15142 df-sqrt 15276 df-abs 15277 df-dvds 16301 df-gcd 16543 df-prm 16720

This theorem is referenced by: freshmansdream 21684

W3C validator