prmdvdsbc - Metamath Proof Explorer

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Theorem prmdvdsbc 16763

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 2737	. . 3 ⊢ ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁)))
2		simpl 482	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℙ)
3		prmnn 16711	. . . . . . . . . 10 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
4	3	nnzd 12640	. . . . . . . . 9 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ)
5		1nn0 12542	. . . . . . . . 9 ⊢ 1 ∈ ℕ₀
6		eluzmn 12885	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ 1 ∈ ℕ₀) → 𝑃 ∈ (ℤ_≥‘(𝑃 − 1)))
7	4, 5, 6	sylancl 586	. . . . . . . 8 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ_≥‘(𝑃 − 1)))
8		fzss2 13604	. . . . . . . 8 ⊢ (𝑃 ∈ (ℤ_≥‘(𝑃 − 1)) → (1...(𝑃 − 1)) ⊆ (1...𝑃))
9	7, 8	syl 17	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → (1...(𝑃 − 1)) ⊆ (1...𝑃))
10		fz1ssfz0 13663	. . . . . . 7 ⊢ (1...𝑃) ⊆ (0...𝑃)
11	9, 10	sstrdi 3996	. . . . . 6 ⊢ (𝑃 ∈ ℙ → (1...(𝑃 − 1)) ⊆ (0...𝑃))
12	11	sselda 3983	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ (0...𝑃))
13		bcval2 14344	. . . . 5 ⊢ (𝑁 ∈ (0...𝑃) → (𝑃C𝑁) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
14	12, 13	syl 17	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) = ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
15	3	nnnn0d 12587	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ₀)
16	15	adantr 480	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℕ₀)
17		elfzelz 13564	. . . . . . 7 ⊢ (𝑁 ∈ (1...(𝑃 − 1)) → 𝑁 ∈ ℤ)
18	17	adantl 481	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℤ)
19		bccl 14361	. . . . . 6 ⊢ ((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℤ) → (𝑃C𝑁) ∈ ℕ₀)
20	16, 18, 19	syl2anc 584	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) ∈ ℕ₀)
21	20	nn0zd 12639	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃C𝑁) ∈ ℤ)
22	14, 21	eqeltrrd 2842	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))) ∈ ℤ)
23		elfznn 13593	. . . . . . . . 9 ⊢ (𝑁 ∈ (1...(𝑃 − 1)) → 𝑁 ∈ ℕ)
24	23	adantl 481	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℕ)
25	24	nnnn0d 12587	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℕ₀)
26		1zzd 12648	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 1 ∈ ℤ)
27	4	adantr 480	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℤ)
28		simpr 484	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ (1...(𝑃 − 1)))
29		elfzm11 13635	. . . . . . . . . 10 ⊢ ((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝑁 ∈ (1...(𝑃 − 1)) ↔ (𝑁 ∈ ℤ ∧ 1 ≤ 𝑁 ∧ 𝑁 < 𝑃)))
30	29	biimpa 476	. . . . . . . . 9 ⊢ (((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑁 ∈ ℤ ∧ 1 ≤ 𝑁 ∧ 𝑁 < 𝑃))
31	30	simp3d 1145	. . . . . . . 8 ⊢ (((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 < 𝑃)
32	26, 27, 28, 31	syl21anc 838	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 < 𝑃)
33		ltsubnn0 12577	. . . . . . . 8 ⊢ ((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) → (𝑁 < 𝑃 → (𝑃 − 𝑁) ∈ ℕ₀))
34	33	imp 406	. . . . . . 7 ⊢ (((𝑃 ∈ ℕ₀ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑁 < 𝑃) → (𝑃 − 𝑁) ∈ ℕ₀)
35	16, 25, 32, 34	syl21anc 838	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃 − 𝑁) ∈ ℕ₀)
36	35	faccld 14323	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℕ)
37	36	nnzd 12640	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℤ)
38	25	faccld 14323	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℕ)
39	38	nnzd 12640	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℤ)
40	37, 39	zmulcld 12728	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ∈ ℤ)
41	37	zcnd 12723	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ∈ ℂ)
42	39	zcnd 12723	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ∈ ℂ)
43		facne0 14325	. . . . 5 ⊢ ((𝑃 − 𝑁) ∈ ℕ₀ → (!‘(𝑃 − 𝑁)) ≠ 0)
44	35, 43	syl 17	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘(𝑃 − 𝑁)) ≠ 0)
45		facne0 14325	. . . . 5 ⊢ (𝑁 ∈ ℕ₀ → (!‘𝑁) ≠ 0)
46	25, 45	syl 17	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (!‘𝑁) ≠ 0)
47	41, 42, 44, 46	mulne0d 11915	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ≠ 0)
48		uzid 12893	. . . . . 6 ⊢ (𝑃 ∈ ℤ → 𝑃 ∈ (ℤ_≥‘𝑃))
49	4, 48	syl 17	. . . . 5 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ_≥‘𝑃))
50		dvdsfac 16363	. . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ 𝑃 ∈ (ℤ_≥‘𝑃)) → 𝑃 ∥ (!‘𝑃))
51	3, 49, 50	syl2anc 584	. . . 4 ⊢ (𝑃 ∈ ℙ → 𝑃 ∥ (!‘𝑃))
52	51	adantr 480	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ (!‘𝑃))
53	16	nn0red 12588	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℝ)
54	24	nnrpd 13075	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑁 ∈ ℝ⁺)
55	53, 54	ltsubrpd 13109	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → (𝑃 − 𝑁) < 𝑃)
56		prmndvdsfaclt 16762	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ (𝑃 − 𝑁) ∈ ℕ₀) → ((𝑃 − 𝑁) < 𝑃 → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁))))
57	56	imp 406	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ (𝑃 − 𝑁) ∈ ℕ₀) ∧ (𝑃 − 𝑁) < 𝑃) → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)))
58	2, 35, 55, 57	syl21anc 838	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)))
59		prmndvdsfaclt 16762	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ ℕ₀) → (𝑁 < 𝑃 → ¬ 𝑃 ∥ (!‘𝑁)))
60	59	imp 406	. . . . 5 ⊢ (((𝑃 ∈ ℙ ∧ 𝑁 ∈ ℕ₀) ∧ 𝑁 < 𝑃) → ¬ 𝑃 ∥ (!‘𝑁))
61	2, 25, 32, 60	syl21anc 838	. . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ (!‘𝑁))
62		ioran 986	. . . . . 6 ⊢ (¬ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁)) ↔ (¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)) ∧ ¬ 𝑃 ∥ (!‘𝑁)))
63		euclemma 16750	. . . . . . . 8 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) ↔ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁))))
64	63	biimpd 229	. . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)) → (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁))))
65	64	con3d 152	. . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → (¬ (𝑃 ∥ (!‘(𝑃 − 𝑁)) ∨ 𝑃 ∥ (!‘𝑁)) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
66	62, 65	biimtrrid 243	. . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ (!‘(𝑃 − 𝑁)) ∈ ℤ ∧ (!‘𝑁) ∈ ℤ) → ((¬ 𝑃 ∥ (!‘(𝑃 − 𝑁)) ∧ ¬ 𝑃 ∥ (!‘𝑁)) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
67	66	imp 406	. . . 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 1380	. . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ ((!‘(𝑃 − 𝑁)) · (!‘𝑁)))
69	1, 2, 22, 40, 47, 52, 68	dvdszzq 16758	. 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ ((!‘𝑃) / ((!‘(𝑃 − 𝑁)) · (!‘𝑁))))
70	69, 14	breqtrrd 5171	1 ⊢ ((𝑃 ∈ ℙ ∧ 𝑁 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ (𝑃C𝑁))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∨ wo 848 ∧ w3a 1087 = wceq 1540 ∈ wcel 2108 ≠ wne 2940 ⊆ wss 3951 class class class wbr 5143 ‘cfv 6561 (class class class)co 7431 0cc0 11155 1c1 11156 · cmul 11160 < clt 11295 ≤ cle 11296 − cmin 11492 / cdiv 11920 ℕcn 12266 ℕ₀cn0 12526 ℤcz 12613 ℤ_≥cuz 12878 ...cfz 13547 !cfa 14312 Ccbc 14341 ∥ cdvds 16290 ℙcprime 16708

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-cnex 11211 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 ax-pre-sup 11233

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-1st 8014 df-2nd 8015 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-1o 8506 df-2o 8507 df-er 8745 df-en 8986 df-dom 8987 df-sdom 8988 df-fin 8989 df-sup 9482 df-inf 9483 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-n0 12527 df-z 12614 df-uz 12879 df-rp 13035 df-fz 13548 df-fl 13832 df-mod 13910 df-seq 14043 df-exp 14103 df-fac 14313 df-bc 14342 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-dvds 16291 df-gcd 16532 df-prm 16709

This theorem is referenced by: freshmansdream 21593

W3C validator