Theorem odcau 17842

Description: Cauchy's theorem for the order of an element in a group. A finite group whose order divides a prime 𝑃 contains an element of order 𝑃. (Contributed by Mario Carneiro, 16-Jan-2015.)

Hypotheses

Ref	Expression
odcau.x	⊢ 𝑋 = (Base‘𝐺)
odcau.o	⊢ 𝑂 = (od‘𝐺)

Assertion

Ref	Expression
odcau	⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃)

Distinct variable groups:   𝑔,𝐺   𝑃,𝑔   𝑔,𝑋

Allowed substitution hint:   𝑂(𝑔)

Proof of Theorem odcau

Dummy variable 𝑠 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		odcau.x	. . 3 ⊢ 𝑋 = (Base‘𝐺)
2		simpl1 1057	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝐺 ∈ Grp)
3		simpl2 1058	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝑋 ∈ Fin)
4		simpl3 1059	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝑃 ∈ ℙ)
5		1nn0 11185	. . . 4 ⊢ 1 ∈ ℕ0
6	5	a1i 11	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 1 ∈ ℕ0)
7		prmnn 15226	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
8	4, 7	syl 17	. . . . . 6 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝑃 ∈ ℕ)
9	8	nncnd 10913	. . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝑃 ∈ ℂ)
10	9	exp1d 12865	. . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → (𝑃↑1) = 𝑃)
11		simpr 476	. . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → 𝑃 ∥ (#‘𝑋))
12	10, 11	eqbrtrd 4605	. . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → (𝑃↑1) ∥ (#‘𝑋))
13	1, 2, 3, 4, 6, 12	sylow1 17841	. 2 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → ∃𝑠 ∈ (SubGrp‘𝐺)(#‘𝑠) = (𝑃↑1))
14	10	eqeq2d 2620	. . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → ((#‘𝑠) = (𝑃↑1) ↔ (#‘𝑠) = 𝑃))
15	14	adantr 480	. . . 4 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ 𝑠 ∈ (SubGrp‘𝐺)) → ((#‘𝑠) = (𝑃↑1) ↔ (#‘𝑠) = 𝑃))
16		fvex 6113	. . . . . . . . . . . 12 ⊢ (0g‘𝐺) ∈ V
17		hashsng 13020	. . . . . . . . . . . 12 ⊢ ((0g‘𝐺) ∈ V → (#‘{(0g‘𝐺)}) = 1)
18	16, 17	ax-mp 5	. . . . . . . . . . 11 ⊢ (#‘{(0g‘𝐺)}) = 1
19		simprr 792	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (#‘𝑠) = 𝑃)
20	4	adantr 480	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 𝑃 ∈ ℙ)
21		prmuz2 15246	. . . . . . . . . . . . . 14 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ≥‘2))
22	20, 21	syl 17	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 𝑃 ∈ (ℤ≥‘2))
23	19, 22	eqeltrd 2688	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (#‘𝑠) ∈ (ℤ≥‘2))
24		eluz2b2 11637	. . . . . . . . . . . . 13 ⊢ ((#‘𝑠) ∈ (ℤ≥‘2) ↔ ((#‘𝑠) ∈ ℕ ∧ 1 < (#‘𝑠)))
25	24	simprbi 479	. . . . . . . . . . . 12 ⊢ ((#‘𝑠) ∈ (ℤ≥‘2) → 1 < (#‘𝑠))
26	23, 25	syl 17	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 1 < (#‘𝑠))
27	18, 26	syl5eqbr 4618	. . . . . . . . . 10 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (#‘{(0g‘𝐺)}) < (#‘𝑠))
28		snfi 7923	. . . . . . . . . . 11 ⊢ {(0g‘𝐺)} ∈ Fin
29	3	adantr 480	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 𝑋 ∈ Fin)
30	1	subgss 17418	. . . . . . . . . . . . 13 ⊢ (𝑠 ∈ (SubGrp‘𝐺) → 𝑠 ⊆ 𝑋)
31	30	ad2antrl 760	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 𝑠 ⊆ 𝑋)
32		ssfi 8065	. . . . . . . . . . . 12 ⊢ ((𝑋 ∈ Fin ∧ 𝑠 ⊆ 𝑋) → 𝑠 ∈ Fin)
33	29, 31, 32	syl2anc 691	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → 𝑠 ∈ Fin)
34		hashsdom 13031	. . . . . . . . . . 11 ⊢ (({(0g‘𝐺)} ∈ Fin ∧ 𝑠 ∈ Fin) → ((#‘{(0g‘𝐺)}) < (#‘𝑠) ↔ {(0g‘𝐺)} ≺ 𝑠))
35	28, 33, 34	sylancr 694	. . . . . . . . . 10 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → ((#‘{(0g‘𝐺)}) < (#‘𝑠) ↔ {(0g‘𝐺)} ≺ 𝑠))
36	27, 35	mpbid 221	. . . . . . . . 9 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → {(0g‘𝐺)} ≺ 𝑠)
37		sdomdif 7993	. . . . . . . . 9 ⊢ ({(0g‘𝐺)} ≺ 𝑠 → (𝑠 ∖ {(0g‘𝐺)}) ≠ ∅)
38	36, 37	syl 17	. . . . . . . 8 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (𝑠 ∖ {(0g‘𝐺)}) ≠ ∅)
39		n0 3890	. . . . . . . 8 ⊢ ((𝑠 ∖ {(0g‘𝐺)}) ≠ ∅ ↔ ∃𝑔 𝑔 ∈ (𝑠 ∖ {(0g‘𝐺)}))
40	38, 39	sylib 207	. . . . . . 7 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → ∃𝑔 𝑔 ∈ (𝑠 ∖ {(0g‘𝐺)}))
41		eldifsn 4260	. . . . . . . . 9 ⊢ (𝑔 ∈ (𝑠 ∖ {(0g‘𝐺)}) ↔ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))
42	31	adantrr 749	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑠 ⊆ 𝑋)
43		simprrl 800	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑔 ∈ 𝑠)
44	42, 43	sseldd 3569	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑔 ∈ 𝑋)
45		simprrr 801	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑔 ≠ (0g‘𝐺))
46		simprll 798	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑠 ∈ (SubGrp‘𝐺))
47	33	adantrr 749	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑠 ∈ Fin)
48		odcau.o	. . . . . . . . . . . . . . . . . . 19 ⊢ 𝑂 = (od‘𝐺)
49	48	odsubdvds 17809	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑠 ∈ (SubGrp‘𝐺) ∧ 𝑠 ∈ Fin ∧ 𝑔 ∈ 𝑠) → (𝑂‘𝑔) ∥ (#‘𝑠))
50	46, 47, 43, 49	syl3anc 1318	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑂‘𝑔) ∥ (#‘𝑠))
51		simprlr 799	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (#‘𝑠) = 𝑃)
52	50, 51	breqtrd 4609	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑂‘𝑔) ∥ 𝑃)
53	4	adantr 480	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑃 ∈ ℙ)
54	2	adantr 480	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝐺 ∈ Grp)
55	3	adantr 480	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → 𝑋 ∈ Fin)
56	1, 48	odcl2 17805	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑔 ∈ 𝑋) → (𝑂‘𝑔) ∈ ℕ)
57	54, 55, 44, 56	syl3anc 1318	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑂‘𝑔) ∈ ℕ)
58		dvdsprime 15238	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑃 ∈ ℙ ∧ (𝑂‘𝑔) ∈ ℕ) → ((𝑂‘𝑔) ∥ 𝑃 ↔ ((𝑂‘𝑔) = 𝑃 ∨ (𝑂‘𝑔) = 1)))
59	53, 57, 58	syl2anc 691	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → ((𝑂‘𝑔) ∥ 𝑃 ↔ ((𝑂‘𝑔) = 𝑃 ∨ (𝑂‘𝑔) = 1)))
60	52, 59	mpbid 221	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → ((𝑂‘𝑔) = 𝑃 ∨ (𝑂‘𝑔) = 1))
61	60	ord 391	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (¬ (𝑂‘𝑔) = 𝑃 → (𝑂‘𝑔) = 1))
62		eqid 2610	. . . . . . . . . . . . . . . 16 ⊢ (0g‘𝐺) = (0g‘𝐺)
63	48, 62, 1	odeq1 17800	. . . . . . . . . . . . . . 15 ⊢ ((𝐺 ∈ Grp ∧ 𝑔 ∈ 𝑋) → ((𝑂‘𝑔) = 1 ↔ 𝑔 = (0g‘𝐺)))
64	54, 44, 63	syl2anc 691	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → ((𝑂‘𝑔) = 1 ↔ 𝑔 = (0g‘𝐺)))
65	61, 64	sylibd 228	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (¬ (𝑂‘𝑔) = 𝑃 → 𝑔 = (0g‘𝐺)))
66	65	necon1ad 2799	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑔 ≠ (0g‘𝐺) → (𝑂‘𝑔) = 𝑃))
67	45, 66	mpd 15	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑂‘𝑔) = 𝑃)
68	44, 67	jca 553	. . . . . . . . . 10 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ ((𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃) ∧ (𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)))) → (𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃))
69	68	expr 641	. . . . . . . . 9 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → ((𝑔 ∈ 𝑠 ∧ 𝑔 ≠ (0g‘𝐺)) → (𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃)))
70	41, 69	syl5bi 231	. . . . . . . 8 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (𝑔 ∈ (𝑠 ∖ {(0g‘𝐺)}) → (𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃)))
71	70	eximdv 1833	. . . . . . 7 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → (∃𝑔 𝑔 ∈ (𝑠 ∖ {(0g‘𝐺)}) → ∃𝑔(𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃)))
72	40, 71	mpd 15	. . . . . 6 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → ∃𝑔(𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃))
73		df-rex 2902	. . . . . 6 ⊢ (∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃 ↔ ∃𝑔(𝑔 ∈ 𝑋 ∧ (𝑂‘𝑔) = 𝑃))
74	72, 73	sylibr 223	. . . . 5 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ (𝑠 ∈ (SubGrp‘𝐺) ∧ (#‘𝑠) = 𝑃)) → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃)
75	74	expr 641	. . . 4 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ 𝑠 ∈ (SubGrp‘𝐺)) → ((#‘𝑠) = 𝑃 → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃))
76	15, 75	sylbid 229	. . 3 ⊢ ((((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) ∧ 𝑠 ∈ (SubGrp‘𝐺)) → ((#‘𝑠) = (𝑃↑1) → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃))
77	76	rexlimdva 3013	. 2 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → (∃𝑠 ∈ (SubGrp‘𝐺)(#‘𝑠) = (𝑃↑1) → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃))
78	13, 77	mpd 15	1 ⊢ (((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) ∧ 𝑃 ∥ (#‘𝑋)) → ∃𝑔 ∈ 𝑋 (𝑂‘𝑔) = 𝑃)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∨ wo 382   ∧ wa 383   ∧ w3a 1031   = wceq 1475  ∃wex 1695   ∈ wcel 1977   ≠ wne 2780  ∃wrex 2897  Vcvv 3173   ∖ cdif 3537   ⊆ wss 3540  ∅c0 3874  {csn 4125   class class class wbr 4583  ‘cfv 5804  (class class class)co 6549   ≺ csdm 7840  Fincfn 7841  1c1 9816   < clt 9953  ℕcn 10897  2c2 10947  ℕ₀cn0 11169  ℤ_≥cuz 11563  ↑cexp 12722  #chash 12979   ∥ cdvds 14821  ℙcprime 15223  Basecbs 15695  0_gc0g 15923  Grpcgrp 17245  SubGrpcsubg 17411  odcod 17767

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-disj 4554  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-omul 7452  df-er 7629  df-ec 7631  df-qs 7635  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-acn 8651  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-n0 11170  df-xnn0 11241  df-z 11255  df-uz 11564  df-q 11665  df-rp 11709  df-fz 12198  df-fzo 12335  df-fl 12455  df-mod 12531  df-seq 12664  df-exp 12723  df-fac 12923  df-bc 12952  df-hash 12980  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-clim 14067  df-sum 14265  df-dvds 14822  df-gcd 15055  df-prm 15224  df-pc 15380  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-0g 15925  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-submnd 17159  df-grp 17248  df-minusg 17249  df-sbg 17250  df-mulg 17364  df-subg 17414  df-eqg 17416  df-ga 17546  df-od 17771

This theorem is referenced by:  pgpfi  17843  ablfacrplem  18287