Theorem cznrng 48298

Description: The ring constructed from a ℤ/nℤ structure by replacing the (multiplicative) ring operation by a constant operation is a non-unital ring. (Contributed by AV, 17-Feb-2020.)

Hypotheses

Ref	Expression
cznrng.y	⊢ 𝑌 = (ℤ/nℤ‘𝑁)
cznrng.b	⊢ 𝐵 = (Base‘𝑌)
cznrng.x	⊢ 𝑋 = (𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩)
cznrng.0	⊢ 0 = (0g‘𝑌)

Assertion

Ref	Expression
cznrng	⊢ ((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) → 𝑋 ∈ Rng)

Distinct variable groups:   𝑥,𝐵,𝑦   𝑥,𝐶,𝑦   𝑥,𝑁,𝑦   𝑥,𝑋   𝑥,𝑌,𝑦   𝑥, 0 ,𝑦

Allowed substitution hint:   𝑋(𝑦)

Proof of Theorem cznrng

Dummy variables 𝑎 𝑏 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nnnn0 12388	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0)
2		cznrng.y	. . . . . . 7 ⊢ 𝑌 = (ℤ/nℤ‘𝑁)
3	2	zncrng 21482	. . . . . 6 ⊢ (𝑁 ∈ ℕ0 → 𝑌 ∈ CRing)
4	1, 3	syl 17	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑌 ∈ CRing)
5		crngring 20164	. . . . . 6 ⊢ (𝑌 ∈ CRing → 𝑌 ∈ Ring)
6		cznrng.b	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝑌)
7		cznrng.0	. . . . . . . 8 ⊢ 0 = (0g‘𝑌)
8	6, 7	ring0cl 20186	. . . . . . 7 ⊢ (𝑌 ∈ Ring → 0 ∈ 𝐵)
9		eleq1a 2826	. . . . . . 7 ⊢ ( 0 ∈ 𝐵 → (𝐶 = 0 → 𝐶 ∈ 𝐵))
10	8, 9	syl 17	. . . . . 6 ⊢ (𝑌 ∈ Ring → (𝐶 = 0 → 𝐶 ∈ 𝐵))
11	5, 10	syl 17	. . . . 5 ⊢ (𝑌 ∈ CRing → (𝐶 = 0 → 𝐶 ∈ 𝐵))
12	4, 11	syl 17	. . . 4 ⊢ (𝑁 ∈ ℕ → (𝐶 = 0 → 𝐶 ∈ 𝐵))
13	12	imp 406	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) → 𝐶 ∈ 𝐵)
14		cznrng.x	. . . . . 6 ⊢ 𝑋 = (𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩)
15	2, 6, 14	cznabel 48297	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐶 ∈ 𝐵) → 𝑋 ∈ Abel)
16	15	adantlr 715	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → 𝑋 ∈ Abel)
17		eqid 2731	. . . . . 6 ⊢ (mulGrp‘𝑋) = (mulGrp‘𝑋)
18	2, 6, 14	cznrnglem 48296	. . . . . 6 ⊢ 𝐵 = (Base‘𝑋)
19	17, 18	mgpbas 20064	. . . . 5 ⊢ 𝐵 = (Base‘(mulGrp‘𝑋))
20	14	fveq2i 6825	. . . . . . 7 ⊢ (mulGrp‘𝑋) = (mulGrp‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩))
21	2	fvexi 6836	. . . . . . . 8 ⊢ 𝑌 ∈ V
22	6	fvexi 6836	. . . . . . . . 9 ⊢ 𝐵 ∈ V
23	22, 22	mpoex 8011	. . . . . . . 8 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) ∈ V
24		mulridx 17199	. . . . . . . . 9 ⊢ .r = Slot (.r‘ndx)
25	24	setsid 17118	. . . . . . . 8 ⊢ ((𝑌 ∈ V ∧ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) ∈ V) → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (.r‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩)))
26	21, 23, 25	mp2an 692	. . . . . . 7 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (.r‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩))
27	20, 26	mgpplusg 20063	. . . . . 6 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (+g‘(mulGrp‘𝑋))
28	27	eqcomi 2740	. . . . 5 ⊢ (+g‘(mulGrp‘𝑋)) = (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)
29		ne0i 4291	. . . . . 6 ⊢ (𝐶 ∈ 𝐵 → 𝐵 ≠ ∅)
30	29	adantl 481	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → 𝐵 ≠ ∅)
31		simpr 484	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → 𝐶 ∈ 𝐵)
32	19, 28, 30, 31	copissgrp 48205	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → (mulGrp‘𝑋) ∈ Smgrp)
33		oveq1 7353	. . . . . . . . 9 ⊢ (𝐶 = 0 → (𝐶(+g‘𝑌)𝐶) = ( 0 (+g‘𝑌)𝐶))
34	33	ad3antlr 731	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝐶(+g‘𝑌)𝐶) = ( 0 (+g‘𝑌)𝐶))
35	4, 5	syl 17	. . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 𝑌 ∈ Ring)
36		ringmnd 20162	. . . . . . . . . . . . 13 ⊢ (𝑌 ∈ Ring → 𝑌 ∈ Mnd)
37	35, 36	syl 17	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑌 ∈ Mnd)
38	37	adantr 480	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) → 𝑌 ∈ Mnd)
39	38	anim1i 615	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → (𝑌 ∈ Mnd ∧ 𝐶 ∈ 𝐵))
40	39	adantr 480	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑌 ∈ Mnd ∧ 𝐶 ∈ 𝐵))
41		eqid 2731	. . . . . . . . . 10 ⊢ (+g‘𝑌) = (+g‘𝑌)
42	6, 41, 7	mndlid 18662	. . . . . . . . 9 ⊢ ((𝑌 ∈ Mnd ∧ 𝐶 ∈ 𝐵) → ( 0 (+g‘𝑌)𝐶) = 𝐶)
43	40, 42	syl 17	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ( 0 (+g‘𝑌)𝐶) = 𝐶)
44	34, 43	eqtrd 2766	. . . . . . 7 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝐶(+g‘𝑌)𝐶) = 𝐶)
45		eqidd 2732	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶))
46		eqidd 2732	. . . . . . . . 9 ⊢ (((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) ∧ (𝑥 = 𝑎 ∧ 𝑦 = 𝑏)) → 𝐶 = 𝐶)
47		simpr1 1195	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → 𝑎 ∈ 𝐵)
48		simpr2 1196	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → 𝑏 ∈ 𝐵)
49	31	adantr 480	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → 𝐶 ∈ 𝐵)
50	45, 46, 47, 48, 49	ovmpod 7498	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏) = 𝐶)
51		eqidd 2732	. . . . . . . . 9 ⊢ (((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) ∧ (𝑥 = 𝑎 ∧ 𝑦 = 𝑐)) → 𝐶 = 𝐶)
52		simpr3 1197	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → 𝑐 ∈ 𝐵)
53	45, 51, 47, 52, 49	ovmpod 7498	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = 𝐶)
54	50, 53	oveq12d 7364	. . . . . . 7 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) = (𝐶(+g‘𝑌)𝐶))
55		eqidd 2732	. . . . . . . 8 ⊢ (((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) ∧ (𝑥 = 𝑎 ∧ 𝑦 = (𝑏(+g‘𝑌)𝑐))) → 𝐶 = 𝐶)
56	35	ad3antrrr 730	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → 𝑌 ∈ Ring)
57	6, 41	ringacl 20197	. . . . . . . . 9 ⊢ ((𝑌 ∈ Ring ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵) → (𝑏(+g‘𝑌)𝑐) ∈ 𝐵)
58	56, 48, 52, 57	syl3anc 1373	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑏(+g‘𝑌)𝑐) ∈ 𝐵)
59	45, 55, 47, 58, 49	ovmpod 7498	. . . . . . 7 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = 𝐶)
60	44, 54, 59	3eqtr4rd 2777	. . . . . 6 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)))
61		eqidd 2732	. . . . . . . . 9 ⊢ (((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) ∧ (𝑥 = 𝑏 ∧ 𝑦 = 𝑐)) → 𝐶 = 𝐶)
62	45, 61, 48, 52, 49	ovmpod 7498	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = 𝐶)
63	53, 62	oveq12d 7364	. . . . . . 7 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) = (𝐶(+g‘𝑌)𝐶))
64		eqidd 2732	. . . . . . . 8 ⊢ (((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) ∧ (𝑥 = (𝑎(+g‘𝑌)𝑏) ∧ 𝑦 = 𝑐)) → 𝐶 = 𝐶)
65	6, 41	ringacl 20197	. . . . . . . . 9 ⊢ ((𝑌 ∈ Ring ∧ 𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵) → (𝑎(+g‘𝑌)𝑏) ∈ 𝐵)
66	56, 47, 48, 65	syl3anc 1373	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → (𝑎(+g‘𝑌)𝑏) ∈ 𝐵)
67	45, 64, 66, 52, 49	ovmpod 7498	. . . . . . 7 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = 𝐶)
68	44, 63, 67	3eqtr4rd 2777	. . . . . 6 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)))
69	60, 68	jca 511	. . . . 5 ⊢ ((((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵 ∧ 𝑐 ∈ 𝐵)) → ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) ∧ ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐))))
70	69	ralrimivvva 3178	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) ∧ ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐))))
71	16, 32, 70	3jca 1128	. . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) ∧ 𝐶 ∈ 𝐵) → (𝑋 ∈ Abel ∧ (mulGrp‘𝑋) ∈ Smgrp ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) ∧ ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)))))
72	13, 71	mpdan 687	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) → (𝑋 ∈ Abel ∧ (mulGrp‘𝑋) ∈ Smgrp ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) ∧ ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)))))
73		plusgid 17188	. . . . 5 ⊢ +g = Slot (+g‘ndx)
74		plusgndxnmulrndx 17201	. . . . 5 ⊢ (+g‘ndx) ≠ (.r‘ndx)
75	73, 74	setsnid 17119	. . . 4 ⊢ (+g‘𝑌) = (+g‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩))
76	14	fveq2i 6825	. . . 4 ⊢ (+g‘𝑋) = (+g‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩))
77	75, 76	eqtr4i 2757	. . 3 ⊢ (+g‘𝑌) = (+g‘𝑋)
78	14	eqcomi 2740	. . . . 5 ⊢ (𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩) = 𝑋
79	78	fveq2i 6825	. . . 4 ⊢ (.r‘(𝑌 sSet ⟨(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)⟩)) = (.r‘𝑋)
80	26, 79	eqtri 2754	. . 3 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (.r‘𝑋)
81	18, 17, 77, 80	isrng 20073	. 2 ⊢ (𝑋 ∈ Rng ↔ (𝑋 ∈ Abel ∧ (mulGrp‘𝑋) ∈ Smgrp ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)(𝑏(+g‘𝑌)𝑐)) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑏)(+g‘𝑌)(𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)) ∧ ((𝑎(+g‘𝑌)𝑏)(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐) = ((𝑎(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)(+g‘𝑌)(𝑏(𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)𝑐)))))
82	72, 81	sylibr 234	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐶 = 0 ) → 𝑋 ∈ Rng)

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1086   = wceq 1541   ∈ wcel 2111   ≠ wne 2928  ∀wral 3047  Vcvv 3436  ∅c0 4283  ⟨cop 4582  ‘cfv 6481  (class class class)co 7346   ∈ cmpo 7348  ℕcn 12125  ℕ₀cn0 12381   sSet csts 17074  ndxcnx 17104  Basecbs 17120  +_gcplusg 17161  ._rcmulr 17162  0_gc0g 17343  Smgrpcsgrp 18626  Mndcmnd 18642  Abelcabl 19694  mulGrpcmgp 20059  Rngcrng 20071  Ringcrg 20152  CRingccrg 20153  ℤ/nℤczn 21440

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 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5217  ax-sep 5234  ax-nul 5244  ax-pow 5303  ax-pr 5370  ax-un 7668  ax-cnex 11062  ax-resscn 11063  ax-1cn 11064  ax-icn 11065  ax-addcl 11066  ax-addrcl 11067  ax-mulcl 11068  ax-mulrcl 11069  ax-mulcom 11070  ax-addass 11071  ax-mulass 11072  ax-distr 11073  ax-i2m1 11074  ax-1ne0 11075  ax-1rid 11076  ax-rnegex 11077  ax-rrecex 11078  ax-cnre 11079  ax-pre-lttri 11080  ax-pre-lttrn 11081  ax-pre-ltadd 11082  ax-pre-mulgt0 11083  ax-addf 11085

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-nel 3033  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3742  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-pss 3922  df-nul 4284  df-if 4476  df-pw 4552  df-sn 4577  df-pr 4579  df-tp 4581  df-op 4583  df-uni 4860  df-int 4898  df-iun 4943  df-br 5092  df-opab 5154  df-mpt 5173  df-tr 5199  df-id 5511  df-eprel 5516  df-po 5524  df-so 5525  df-fr 5569  df-we 5571  df-xp 5622  df-rel 5623  df-cnv 5624  df-co 5625  df-dm 5626  df-rn 5627  df-res 5628  df-ima 5629  df-pred 6248  df-ord 6309  df-on 6310  df-lim 6311  df-suc 6312  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-riota 7303  df-ov 7349  df-oprab 7350  df-mpo 7351  df-om 7797  df-1st 7921  df-2nd 7922  df-tpos 8156  df-frecs 8211  df-wrecs 8242  df-recs 8291  df-rdg 8329  df-1o 8385  df-er 8622  df-ec 8624  df-qs 8628  df-en 8870  df-dom 8871  df-sdom 8872  df-fin 8873  df-sup 9326  df-inf 9327  df-pnf 11148  df-mnf 11149  df-xr 11150  df-ltxr 11151  df-le 11152  df-sub 11346  df-neg 11347  df-nn 12126  df-2 12188  df-3 12189  df-4 12190  df-5 12191  df-6 12192  df-7 12193  df-8 12194  df-9 12195  df-n0 12382  df-z 12469  df-dec 12589  df-uz 12733  df-fz 13408  df-struct 17058  df-sets 17075  df-slot 17093  df-ndx 17105  df-base 17121  df-ress 17142  df-plusg 17174  df-mulr 17175  df-starv 17176  df-sca 17177  df-vsca 17178  df-ip 17179  df-tset 17180  df-ple 17181  df-ds 17183  df-unif 17184  df-0g 17345  df-imas 17412  df-qus 17413  df-mgm 18548  df-sgrp 18627  df-mnd 18643  df-grp 18849  df-minusg 18850  df-sbg 18851  df-subg 19036  df-nsg 19037  df-eqg 19038  df-cmn 19695  df-abl 19696  df-mgp 20060  df-rng 20072  df-ur 20101  df-ring 20154  df-cring 20155  df-oppr 20256  df-subrng 20462  df-subrg 20486  df-lmod 20796  df-lss 20866  df-lsp 20906  df-sra 21108  df-rgmod 21109  df-lidl 21146  df-rsp 21147  df-2idl 21188  df-cnfld 21293  df-zring 21385  df-zn 21444

This theorem is referenced by: (None)