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Theorem mulgass2 18601

Description: An associative property between group multiple and ring multiplication. (Contributed by Mario Carneiro, 14-Jun-2015.)

**Hypotheses**
Ref	Expression
mulgass2.b	⊢ 𝐵 = (Base‘𝑅)
mulgass2.m	⊢ · = (._g‘𝑅)
mulgass2.t	⊢ × = (._r‘𝑅)

**Assertion**
Ref	Expression
mulgass2	⊢ ((𝑅 ∈ Ring ∧ (𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵)) → ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌)))

Proof of Theorem mulgass2 Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		oveq1 6657	. . . . . . 7 ⊢ (𝑥 = 0 → (𝑥 · 𝑋) = (0 · 𝑋))
2	1	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = 0 → ((𝑥 · 𝑋) × 𝑌) = ((0 · 𝑋) × 𝑌))
3		oveq1 6657	. . . . . 6 ⊢ (𝑥 = 0 → (𝑥 · (𝑋 × 𝑌)) = (0 · (𝑋 × 𝑌)))
4	2, 3	eqeq12d 2637	. . . . 5 ⊢ (𝑥 = 0 → (((𝑥 · 𝑋) × 𝑌) = (𝑥 · (𝑋 × 𝑌)) ↔ ((0 · 𝑋) × 𝑌) = (0 · (𝑋 × 𝑌))))
5		oveq1 6657	. . . . . . 7 ⊢ (𝑥 = 𝑦 → (𝑥 · 𝑋) = (𝑦 · 𝑋))
6	5	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = 𝑦 → ((𝑥 · 𝑋) × 𝑌) = ((𝑦 · 𝑋) × 𝑌))
7		oveq1 6657	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝑥 · (𝑋 × 𝑌)) = (𝑦 · (𝑋 × 𝑌)))
8	6, 7	eqeq12d 2637	. . . . 5 ⊢ (𝑥 = 𝑦 → (((𝑥 · 𝑋) × 𝑌) = (𝑥 · (𝑋 × 𝑌)) ↔ ((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌))))
9		oveq1 6657	. . . . . . 7 ⊢ (𝑥 = (𝑦 + 1) → (𝑥 · 𝑋) = ((𝑦 + 1) · 𝑋))
10	9	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = (𝑦 + 1) → ((𝑥 · 𝑋) × 𝑌) = (((𝑦 + 1) · 𝑋) × 𝑌))
11		oveq1 6657	. . . . . 6 ⊢ (𝑥 = (𝑦 + 1) → (𝑥 · (𝑋 × 𝑌)) = ((𝑦 + 1) · (𝑋 × 𝑌)))
12	10, 11	eqeq12d 2637	. . . . 5 ⊢ (𝑥 = (𝑦 + 1) → (((𝑥 · 𝑋) × 𝑌) = (𝑥 · (𝑋 × 𝑌)) ↔ (((𝑦 + 1) · 𝑋) × 𝑌) = ((𝑦 + 1) · (𝑋 × 𝑌))))
13		oveq1 6657	. . . . . . 7 ⊢ (𝑥 = -𝑦 → (𝑥 · 𝑋) = (-𝑦 · 𝑋))
14	13	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = -𝑦 → ((𝑥 · 𝑋) × 𝑌) = ((-𝑦 · 𝑋) × 𝑌))
15		oveq1 6657	. . . . . 6 ⊢ (𝑥 = -𝑦 → (𝑥 · (𝑋 × 𝑌)) = (-𝑦 · (𝑋 × 𝑌)))
16	14, 15	eqeq12d 2637	. . . . 5 ⊢ (𝑥 = -𝑦 → (((𝑥 · 𝑋) × 𝑌) = (𝑥 · (𝑋 × 𝑌)) ↔ ((-𝑦 · 𝑋) × 𝑌) = (-𝑦 · (𝑋 × 𝑌))))
17		oveq1 6657	. . . . . . 7 ⊢ (𝑥 = 𝑁 → (𝑥 · 𝑋) = (𝑁 · 𝑋))
18	17	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = 𝑁 → ((𝑥 · 𝑋) × 𝑌) = ((𝑁 · 𝑋) × 𝑌))
19		oveq1 6657	. . . . . 6 ⊢ (𝑥 = 𝑁 → (𝑥 · (𝑋 × 𝑌)) = (𝑁 · (𝑋 × 𝑌)))
20	18, 19	eqeq12d 2637	. . . . 5 ⊢ (𝑥 = 𝑁 → (((𝑥 · 𝑋) × 𝑌) = (𝑥 · (𝑋 × 𝑌)) ↔ ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌))))
21		mulgass2.b	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝑅)
22		mulgass2.t	. . . . . . . 8 ⊢ × = (._r‘𝑅)
23		eqid 2622	. . . . . . . 8 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
24	21, 22, 23	ringlz 18587	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵) → ((0_g‘𝑅) × 𝑌) = (0_g‘𝑅))
25	24	3adant3 1081	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → ((0_g‘𝑅) × 𝑌) = (0_g‘𝑅))
26		simp3 1063	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → 𝑋 ∈ 𝐵)
27		mulgass2.m	. . . . . . . . 9 ⊢ · = (._g‘𝑅)
28	21, 23, 27	mulg0 17546	. . . . . . . 8 ⊢ (𝑋 ∈ 𝐵 → (0 · 𝑋) = (0_g‘𝑅))
29	26, 28	syl 17	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (0 · 𝑋) = (0_g‘𝑅))
30	29	oveq1d 6665	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → ((0 · 𝑋) × 𝑌) = ((0_g‘𝑅) × 𝑌))
31	21, 22	ringcl 18561	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 × 𝑌) ∈ 𝐵)
32	31	3com23 1271	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑋 × 𝑌) ∈ 𝐵)
33	21, 23, 27	mulg0 17546	. . . . . . 7 ⊢ ((𝑋 × 𝑌) ∈ 𝐵 → (0 · (𝑋 × 𝑌)) = (0_g‘𝑅))
34	32, 33	syl 17	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (0 · (𝑋 × 𝑌)) = (0_g‘𝑅))
35	25, 30, 34	3eqtr4d 2666	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → ((0 · 𝑋) × 𝑌) = (0 · (𝑋 × 𝑌)))
36		oveq1 6657	. . . . . . 7 ⊢ (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → (((𝑦 · 𝑋) × 𝑌)(+_g‘𝑅)(𝑋 × 𝑌)) = ((𝑦 · (𝑋 × 𝑌))(+_g‘𝑅)(𝑋 × 𝑌)))
37		simpl1 1064	. . . . . . . . . . . 12 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑅 ∈ Ring)
38		ringgrp 18552	. . . . . . . . . . . 12 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
39	37, 38	syl 17	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑅 ∈ Grp)
40		nn0z 11400	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℕ₀ → 𝑦 ∈ ℤ)
41	40	adantl 482	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑦 ∈ ℤ)
42	26	adantr 481	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑋 ∈ 𝐵)
43		eqid 2622	. . . . . . . . . . . 12 ⊢ (+_g‘𝑅) = (+_g‘𝑅)
44	21, 27, 43	mulgp1 17574	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ((𝑦 + 1) · 𝑋) = ((𝑦 · 𝑋)(+_g‘𝑅)𝑋))
45	39, 41, 42, 44	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → ((𝑦 + 1) · 𝑋) = ((𝑦 · 𝑋)(+_g‘𝑅)𝑋))
46	45	oveq1d 6665	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (((𝑦 + 1) · 𝑋) × 𝑌) = (((𝑦 · 𝑋)(+_g‘𝑅)𝑋) × 𝑌))
47	38	3ad2ant1 1082	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → 𝑅 ∈ Grp)
48	47	adantr 481	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑅 ∈ Grp)
49	21, 27	mulgcl 17559	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑦 · 𝑋) ∈ 𝐵)
50	48, 41, 42, 49	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (𝑦 · 𝑋) ∈ 𝐵)
51		simpl2 1065	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → 𝑌 ∈ 𝐵)
52	21, 43, 22	ringdir 18567	. . . . . . . . . 10 ⊢ ((𝑅 ∈ Ring ∧ ((𝑦 · 𝑋) ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵)) → (((𝑦 · 𝑋)(+_g‘𝑅)𝑋) × 𝑌) = (((𝑦 · 𝑋) × 𝑌)(+_g‘𝑅)(𝑋 × 𝑌)))
53	37, 50, 42, 51, 52	syl13anc 1328	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (((𝑦 · 𝑋)(+_g‘𝑅)𝑋) × 𝑌) = (((𝑦 · 𝑋) × 𝑌)(+_g‘𝑅)(𝑋 × 𝑌)))
54	46, 53	eqtrd 2656	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (((𝑦 + 1) · 𝑋) × 𝑌) = (((𝑦 · 𝑋) × 𝑌)(+_g‘𝑅)(𝑋 × 𝑌)))
55	32	adantr 481	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (𝑋 × 𝑌) ∈ 𝐵)
56	21, 27, 43	mulgp1 17574	. . . . . . . . 9 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ ℤ ∧ (𝑋 × 𝑌) ∈ 𝐵) → ((𝑦 + 1) · (𝑋 × 𝑌)) = ((𝑦 · (𝑋 × 𝑌))(+_g‘𝑅)(𝑋 × 𝑌)))
57	39, 41, 55, 56	syl3anc 1326	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → ((𝑦 + 1) · (𝑋 × 𝑌)) = ((𝑦 · (𝑋 × 𝑌))(+_g‘𝑅)(𝑋 × 𝑌)))
58	54, 57	eqeq12d 2637	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → ((((𝑦 + 1) · 𝑋) × 𝑌) = ((𝑦 + 1) · (𝑋 × 𝑌)) ↔ (((𝑦 · 𝑋) × 𝑌)(+_g‘𝑅)(𝑋 × 𝑌)) = ((𝑦 · (𝑋 × 𝑌))(+_g‘𝑅)(𝑋 × 𝑌))))
59	36, 58	syl5ibr 236	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ₀) → (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → (((𝑦 + 1) · 𝑋) × 𝑌) = ((𝑦 + 1) · (𝑋 × 𝑌))))
60	59	ex 450	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑦 ∈ ℕ₀ → (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → (((𝑦 + 1) · 𝑋) × 𝑌) = ((𝑦 + 1) · (𝑋 × 𝑌)))))
61		fveq2 6191	. . . . . . 7 ⊢ (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → ((inv_g‘𝑅)‘((𝑦 · 𝑋) × 𝑌)) = ((inv_g‘𝑅)‘(𝑦 · (𝑋 × 𝑌))))
62	47	adantr 481	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → 𝑅 ∈ Grp)
63		nnz 11399	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℕ → 𝑦 ∈ ℤ)
64	63	adantl 482	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → 𝑦 ∈ ℤ)
65	26	adantr 481	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → 𝑋 ∈ 𝐵)
66		eqid 2622	. . . . . . . . . . . 12 ⊢ (inv_g‘𝑅) = (inv_g‘𝑅)
67	21, 27, 66	mulgneg 17560	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (-𝑦 · 𝑋) = ((inv_g‘𝑅)‘(𝑦 · 𝑋)))
68	62, 64, 65, 67	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (-𝑦 · 𝑋) = ((inv_g‘𝑅)‘(𝑦 · 𝑋)))
69	68	oveq1d 6665	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → ((-𝑦 · 𝑋) × 𝑌) = (((inv_g‘𝑅)‘(𝑦 · 𝑋)) × 𝑌))
70		simpl1 1064	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → 𝑅 ∈ Ring)
71	62, 64, 65, 49	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (𝑦 · 𝑋) ∈ 𝐵)
72		simpl2 1065	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → 𝑌 ∈ 𝐵)
73	21, 22, 66, 70, 71, 72	ringmneg1 18596	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (((inv_g‘𝑅)‘(𝑦 · 𝑋)) × 𝑌) = ((inv_g‘𝑅)‘((𝑦 · 𝑋) × 𝑌)))
74	69, 73	eqtrd 2656	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → ((-𝑦 · 𝑋) × 𝑌) = ((inv_g‘𝑅)‘((𝑦 · 𝑋) × 𝑌)))
75	32	adantr 481	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (𝑋 × 𝑌) ∈ 𝐵)
76	21, 27, 66	mulgneg 17560	. . . . . . . . 9 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ ℤ ∧ (𝑋 × 𝑌) ∈ 𝐵) → (-𝑦 · (𝑋 × 𝑌)) = ((inv_g‘𝑅)‘(𝑦 · (𝑋 × 𝑌))))
77	62, 64, 75, 76	syl3anc 1326	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (-𝑦 · (𝑋 × 𝑌)) = ((inv_g‘𝑅)‘(𝑦 · (𝑋 × 𝑌))))
78	74, 77	eqeq12d 2637	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (((-𝑦 · 𝑋) × 𝑌) = (-𝑦 · (𝑋 × 𝑌)) ↔ ((inv_g‘𝑅)‘((𝑦 · 𝑋) × 𝑌)) = ((inv_g‘𝑅)‘(𝑦 · (𝑋 × 𝑌)))))
79	61, 78	syl5ibr 236	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑦 ∈ ℕ) → (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → ((-𝑦 · 𝑋) × 𝑌) = (-𝑦 · (𝑋 × 𝑌))))
80	79	ex 450	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑦 ∈ ℕ → (((𝑦 · 𝑋) × 𝑌) = (𝑦 · (𝑋 × 𝑌)) → ((-𝑦 · 𝑋) × 𝑌) = (-𝑦 · (𝑋 × 𝑌)))))
81	4, 8, 12, 16, 20, 35, 60, 80	zindd 11478	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑁 ∈ ℤ → ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌))))
82	81	3exp 1264	. . 3 ⊢ (𝑅 ∈ Ring → (𝑌 ∈ 𝐵 → (𝑋 ∈ 𝐵 → (𝑁 ∈ ℤ → ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌))))))
83	82	com24 95	. 2 ⊢ (𝑅 ∈ Ring → (𝑁 ∈ ℤ → (𝑋 ∈ 𝐵 → (𝑌 ∈ 𝐵 → ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌))))))
84	83	3imp2 1282	1 ⊢ ((𝑅 ∈ Ring ∧ (𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵)) → ((𝑁 · 𝑋) × 𝑌) = (𝑁 · (𝑋 × 𝑌)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 384 ∧ w3a 1037 = wceq 1483 ∈ wcel 1990 ‘cfv 5888 (class class class)co 6650 0cc0 9936 1c1 9937 + caddc 9939 -cneg 10267 ℕcn 11020 ℕ₀cn0 11292 ℤcz 11377 Basecbs 15857 +_gcplusg 15941 ._rcmulr 15942 0_gc0g 16100 Grpcgrp 17422 inv_gcminusg 17423 ._gcmg 17540 Ringcrg 18547

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-inf2 8538 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013

This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-nn 11021 df-2 11079 df-n0 11293 df-z 11378 df-uz 11688 df-fz 12327 df-seq 12802 df-ndx 15860 df-slot 15861 df-base 15863 df-sets 15864 df-plusg 15954 df-0g 16102 df-mgm 17242 df-sgrp 17284 df-mnd 17295 df-grp 17425 df-minusg 17426 df-mulg 17541 df-mgp 18490 df-ur 18502 df-ring 18549

This theorem is referenced by: mulgass3 18637 mulgrhm 19846 zlmassa 19872 isarchiofld 29817

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