Theorem srgpcomp 19284

Description: If two elements of a semiring commute, they also commute if one of the elements is raised to a higher power. (Contributed by AV, 23-Aug-2019.)

Hypotheses

Ref	Expression
srgpcomp.s	⊢ 𝑆 = (Base‘𝑅)
srgpcomp.m	⊢ × = (.r‘𝑅)
srgpcomp.g	⊢ 𝐺 = (mulGrp‘𝑅)
srgpcomp.e	⊢ ↑ = (.g‘𝐺)
srgpcomp.r	⊢ (𝜑 → 𝑅 ∈ SRing)
srgpcomp.a	⊢ (𝜑 → 𝐴 ∈ 𝑆)
srgpcomp.b	⊢ (𝜑 → 𝐵 ∈ 𝑆)
srgpcomp.k	⊢ (𝜑 → 𝐾 ∈ ℕ0)
srgpcomp.c	⊢ (𝜑 → (𝐴 × 𝐵) = (𝐵 × 𝐴))

Assertion

Ref	Expression
srgpcomp	⊢ (𝜑 → ((𝐾 ↑ 𝐵) × 𝐴) = (𝐴 × (𝐾 ↑ 𝐵)))

Proof of Theorem srgpcomp

Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		srgpcomp.k	. 2 ⊢ (𝜑 → 𝐾 ∈ ℕ0)
2		oveq1 7165	. . . . . 6 ⊢ (𝑥 = 0 → (𝑥 ↑ 𝐵) = (0 ↑ 𝐵))
3	2	oveq1d 7173	. . . . 5 ⊢ (𝑥 = 0 → ((𝑥 ↑ 𝐵) × 𝐴) = ((0 ↑ 𝐵) × 𝐴))
4	2	oveq2d 7174	. . . . 5 ⊢ (𝑥 = 0 → (𝐴 × (𝑥 ↑ 𝐵)) = (𝐴 × (0 ↑ 𝐵)))
5	3, 4	eqeq12d 2839	. . . 4 ⊢ (𝑥 = 0 → (((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵)) ↔ ((0 ↑ 𝐵) × 𝐴) = (𝐴 × (0 ↑ 𝐵))))
6	5	imbi2d 343	. . 3 ⊢ (𝑥 = 0 → ((𝜑 → ((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵))) ↔ (𝜑 → ((0 ↑ 𝐵) × 𝐴) = (𝐴 × (0 ↑ 𝐵)))))
7		oveq1 7165	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝑥 ↑ 𝐵) = (𝑦 ↑ 𝐵))
8	7	oveq1d 7173	. . . . 5 ⊢ (𝑥 = 𝑦 → ((𝑥 ↑ 𝐵) × 𝐴) = ((𝑦 ↑ 𝐵) × 𝐴))
9	7	oveq2d 7174	. . . . 5 ⊢ (𝑥 = 𝑦 → (𝐴 × (𝑥 ↑ 𝐵)) = (𝐴 × (𝑦 ↑ 𝐵)))
10	8, 9	eqeq12d 2839	. . . 4 ⊢ (𝑥 = 𝑦 → (((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵)) ↔ ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵))))
11	10	imbi2d 343	. . 3 ⊢ (𝑥 = 𝑦 → ((𝜑 → ((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵))) ↔ (𝜑 → ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵)))))
12		oveq1 7165	. . . . . 6 ⊢ (𝑥 = (𝑦 + 1) → (𝑥 ↑ 𝐵) = ((𝑦 + 1) ↑ 𝐵))
13	12	oveq1d 7173	. . . . 5 ⊢ (𝑥 = (𝑦 + 1) → ((𝑥 ↑ 𝐵) × 𝐴) = (((𝑦 + 1) ↑ 𝐵) × 𝐴))
14	12	oveq2d 7174	. . . . 5 ⊢ (𝑥 = (𝑦 + 1) → (𝐴 × (𝑥 ↑ 𝐵)) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))
15	13, 14	eqeq12d 2839	. . . 4 ⊢ (𝑥 = (𝑦 + 1) → (((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵)) ↔ (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵))))
16	15	imbi2d 343	. . 3 ⊢ (𝑥 = (𝑦 + 1) → ((𝜑 → ((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵))) ↔ (𝜑 → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))))
17		oveq1 7165	. . . . . 6 ⊢ (𝑥 = 𝐾 → (𝑥 ↑ 𝐵) = (𝐾 ↑ 𝐵))
18	17	oveq1d 7173	. . . . 5 ⊢ (𝑥 = 𝐾 → ((𝑥 ↑ 𝐵) × 𝐴) = ((𝐾 ↑ 𝐵) × 𝐴))
19	17	oveq2d 7174	. . . . 5 ⊢ (𝑥 = 𝐾 → (𝐴 × (𝑥 ↑ 𝐵)) = (𝐴 × (𝐾 ↑ 𝐵)))
20	18, 19	eqeq12d 2839	. . . 4 ⊢ (𝑥 = 𝐾 → (((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵)) ↔ ((𝐾 ↑ 𝐵) × 𝐴) = (𝐴 × (𝐾 ↑ 𝐵))))
21	20	imbi2d 343	. . 3 ⊢ (𝑥 = 𝐾 → ((𝜑 → ((𝑥 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑥 ↑ 𝐵))) ↔ (𝜑 → ((𝐾 ↑ 𝐵) × 𝐴) = (𝐴 × (𝐾 ↑ 𝐵)))))
22		srgpcomp.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝑆)
23		srgpcomp.g	. . . . . . . 8 ⊢ 𝐺 = (mulGrp‘𝑅)
24		srgpcomp.s	. . . . . . . 8 ⊢ 𝑆 = (Base‘𝑅)
25	23, 24	mgpbas 19247	. . . . . . 7 ⊢ 𝑆 = (Base‘𝐺)
26		eqid 2823	. . . . . . . 8 ⊢ (1r‘𝑅) = (1r‘𝑅)
27	23, 26	ringidval 19255	. . . . . . 7 ⊢ (1r‘𝑅) = (0g‘𝐺)
28		srgpcomp.e	. . . . . . 7 ⊢ ↑ = (.g‘𝐺)
29	25, 27, 28	mulg0 18233	. . . . . 6 ⊢ (𝐵 ∈ 𝑆 → (0 ↑ 𝐵) = (1r‘𝑅))
30	22, 29	syl 17	. . . . 5 ⊢ (𝜑 → (0 ↑ 𝐵) = (1r‘𝑅))
31	30	oveq1d 7173	. . . 4 ⊢ (𝜑 → ((0 ↑ 𝐵) × 𝐴) = ((1r‘𝑅) × 𝐴))
32		srgpcomp.r	. . . . . 6 ⊢ (𝜑 → 𝑅 ∈ SRing)
33		srgpcomp.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑆)
34		srgpcomp.m	. . . . . . 7 ⊢ × = (.r‘𝑅)
35	24, 34, 26	srgridm 19274	. . . . . 6 ⊢ ((𝑅 ∈ SRing ∧ 𝐴 ∈ 𝑆) → (𝐴 × (1r‘𝑅)) = 𝐴)
36	32, 33, 35	syl2anc 586	. . . . 5 ⊢ (𝜑 → (𝐴 × (1r‘𝑅)) = 𝐴)
37	30	oveq2d 7174	. . . . 5 ⊢ (𝜑 → (𝐴 × (0 ↑ 𝐵)) = (𝐴 × (1r‘𝑅)))
38	24, 34, 26	srglidm 19273	. . . . . 6 ⊢ ((𝑅 ∈ SRing ∧ 𝐴 ∈ 𝑆) → ((1r‘𝑅) × 𝐴) = 𝐴)
39	32, 33, 38	syl2anc 586	. . . . 5 ⊢ (𝜑 → ((1r‘𝑅) × 𝐴) = 𝐴)
40	36, 37, 39	3eqtr4rd 2869	. . . 4 ⊢ (𝜑 → ((1r‘𝑅) × 𝐴) = (𝐴 × (0 ↑ 𝐵)))
41	31, 40	eqtrd 2858	. . 3 ⊢ (𝜑 → ((0 ↑ 𝐵) × 𝐴) = (𝐴 × (0 ↑ 𝐵)))
42	23	srgmgp 19262	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ SRing → 𝐺 ∈ Mnd)
43	32, 42	syl 17	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐺 ∈ Mnd)
44	43	adantr 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → 𝐺 ∈ Mnd)
45		simpr 487	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → 𝑦 ∈ ℕ0)
46	22	adantr 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → 𝐵 ∈ 𝑆)
47	23, 34	mgpplusg 19245	. . . . . . . . . . . 12 ⊢ × = (+g‘𝐺)
48	25, 28, 47	mulgnn0p1 18241	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Mnd ∧ 𝑦 ∈ ℕ0 ∧ 𝐵 ∈ 𝑆) → ((𝑦 + 1) ↑ 𝐵) = ((𝑦 ↑ 𝐵) × 𝐵))
49	44, 45, 46, 48	syl3anc 1367	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → ((𝑦 + 1) ↑ 𝐵) = ((𝑦 ↑ 𝐵) × 𝐵))
50	49	oveq1d 7173	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (((𝑦 ↑ 𝐵) × 𝐵) × 𝐴))
51		srgpcomp.c	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴 × 𝐵) = (𝐵 × 𝐴))
52	51	eqcomd 2829	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐵 × 𝐴) = (𝐴 × 𝐵))
53	52	adantr 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (𝐵 × 𝐴) = (𝐴 × 𝐵))
54	53	oveq2d 7174	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → ((𝑦 ↑ 𝐵) × (𝐵 × 𝐴)) = ((𝑦 ↑ 𝐵) × (𝐴 × 𝐵)))
55	32	adantr 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → 𝑅 ∈ SRing)
56	25, 28	mulgnn0cl 18246	. . . . . . . . . . . 12 ⊢ ((𝐺 ∈ Mnd ∧ 𝑦 ∈ ℕ0 ∧ 𝐵 ∈ 𝑆) → (𝑦 ↑ 𝐵) ∈ 𝑆)
57	44, 45, 46, 56	syl3anc 1367	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (𝑦 ↑ 𝐵) ∈ 𝑆)
58	33	adantr 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → 𝐴 ∈ 𝑆)
59	24, 34	srgass 19265	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ SRing ∧ ((𝑦 ↑ 𝐵) ∈ 𝑆 ∧ 𝐵 ∈ 𝑆 ∧ 𝐴 ∈ 𝑆)) → (((𝑦 ↑ 𝐵) × 𝐵) × 𝐴) = ((𝑦 ↑ 𝐵) × (𝐵 × 𝐴)))
60	55, 57, 46, 58, 59	syl13anc 1368	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 ↑ 𝐵) × 𝐵) × 𝐴) = ((𝑦 ↑ 𝐵) × (𝐵 × 𝐴)))
61	24, 34	srgass 19265	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ SRing ∧ ((𝑦 ↑ 𝐵) ∈ 𝑆 ∧ 𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆)) → (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵) = ((𝑦 ↑ 𝐵) × (𝐴 × 𝐵)))
62	55, 57, 58, 46, 61	syl13anc 1368	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵) = ((𝑦 ↑ 𝐵) × (𝐴 × 𝐵)))
63	54, 60, 62	3eqtr4d 2868	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 ↑ 𝐵) × 𝐵) × 𝐴) = (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵))
64	50, 63	eqtrd 2858	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵))
65	64	adantr 483	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℕ0) ∧ ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵))) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵))
66		oveq1 7165	. . . . . . . 8 ⊢ (((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵)) → (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵) = ((𝐴 × (𝑦 ↑ 𝐵)) × 𝐵))
67	24, 34	srgass 19265	. . . . . . . . . 10 ⊢ ((𝑅 ∈ SRing ∧ (𝐴 ∈ 𝑆 ∧ (𝑦 ↑ 𝐵) ∈ 𝑆 ∧ 𝐵 ∈ 𝑆)) → ((𝐴 × (𝑦 ↑ 𝐵)) × 𝐵) = (𝐴 × ((𝑦 ↑ 𝐵) × 𝐵)))
68	55, 58, 57, 46, 67	syl13anc 1368	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → ((𝐴 × (𝑦 ↑ 𝐵)) × 𝐵) = (𝐴 × ((𝑦 ↑ 𝐵) × 𝐵)))
69	49	eqcomd 2829	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → ((𝑦 ↑ 𝐵) × 𝐵) = ((𝑦 + 1) ↑ 𝐵))
70	69	oveq2d 7174	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (𝐴 × ((𝑦 ↑ 𝐵) × 𝐵)) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))
71	68, 70	eqtrd 2858	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → ((𝐴 × (𝑦 ↑ 𝐵)) × 𝐵) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))
72	66, 71	sylan9eqr 2880	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℕ0) ∧ ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵))) → (((𝑦 ↑ 𝐵) × 𝐴) × 𝐵) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))
73	65, 72	eqtrd 2858	. . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ ℕ0) ∧ ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵))) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))
74	73	ex 415	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ ℕ0) → (((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵)) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵))))
75	74	expcom 416	. . . 4 ⊢ (𝑦 ∈ ℕ0 → (𝜑 → (((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵)) → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))))
76	75	a2d 29	. . 3 ⊢ (𝑦 ∈ ℕ0 → ((𝜑 → ((𝑦 ↑ 𝐵) × 𝐴) = (𝐴 × (𝑦 ↑ 𝐵))) → (𝜑 → (((𝑦 + 1) ↑ 𝐵) × 𝐴) = (𝐴 × ((𝑦 + 1) ↑ 𝐵)))))
77	6, 11, 16, 21, 41, 76	nn0ind 12080	. 2 ⊢ (𝐾 ∈ ℕ0 → (𝜑 → ((𝐾 ↑ 𝐵) × 𝐴) = (𝐴 × (𝐾 ↑ 𝐵))))
78	1, 77	mpcom 38	1 ⊢ (𝜑 → ((𝐾 ↑ 𝐵) × 𝐴) = (𝐴 × (𝐾 ↑ 𝐵)))

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1537   ∈ wcel 2114  ‘cfv 6357  (class class class)co 7158  0cc0 10539  1c1 10540   + caddc 10542  ℕ₀cn0 11900  Basecbs 16485  ._rcmulr 16568  Mndcmnd 17913  ._gcmg 18226  mulGrpcmgp 19241  1_rcur 19253  SRingcsrg 19257

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 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596  ax-1cn 10597  ax-icn 10598  ax-addcl 10599  ax-addrcl 10600  ax-mulcl 10601  ax-mulrcl 10602  ax-mulcom 10603  ax-addass 10604  ax-mulass 10605  ax-distr 10606  ax-i2m1 10607  ax-1ne0 10608  ax-1rid 10609  ax-rnegex 10610  ax-rrecex 10611  ax-cnre 10612  ax-pre-lttri 10613  ax-pre-lttrn 10614  ax-pre-ltadd 10615  ax-pre-mulgt0 10616

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-nel 3126  df-ral 3145  df-rex 3146  df-reu 3147  df-rmo 3148  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-1st 7691  df-2nd 7692  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-er 8291  df-en 8512  df-dom 8513  df-sdom 8514  df-pnf 10679  df-mnf 10680  df-xr 10681  df-ltxr 10682  df-le 10683  df-sub 10874  df-neg 10875  df-nn 11641  df-2 11703  df-n0 11901  df-z 11985  df-uz 12247  df-fz 12896  df-seq 13373  df-ndx 16488  df-slot 16489  df-base 16491  df-sets 16492  df-plusg 16580  df-0g 16717  df-mgm 17854  df-sgrp 17903  df-mnd 17914  df-mulg 18227  df-mgp 19242  df-ur 19254  df-srg 19258

This theorem is referenced by:  srgpcompp  19285  mplcoe5lem  20250