mnringmulrd - Mathbox for Rohan Ridenour

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Theorem mnringmulrd 42970

Description: The ring product of a monoid ring. (Contributed by Rohan Ridenour, 14-May-2024.)

**Hypotheses**
Ref	Expression
mnringmulrd.1	⊢ 𝐹 = (𝑅 MndRing 𝑀)
mnringmulrd.2	⊢ 𝐵 = (Base‘𝐹)
mnringmulrd.3	⊢ · = (._r‘𝑅)
mnringmulrd.4	⊢ 0 = (0_g‘𝑅)
mnringmulrd.5	⊢ 𝐴 = (Base‘𝑀)
mnringmulrd.6	⊢ + = (+_g‘𝑀)
mnringmulrd.7	⊢ (𝜑 → 𝑅 ∈ 𝑈)
mnringmulrd.8	⊢ (𝜑 → 𝑀 ∈ 𝑊)

**Assertion**
Ref	Expression
mnringmulrd	⊢ (𝜑 → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ (𝐹 Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (._r‘𝐹))

Distinct variable groups: 𝜑,𝑥,𝑦 𝐴,𝑎,𝑏,𝑥,𝑦 𝑅,𝑎,𝑏,𝑖,𝑥,𝑦 𝑀,𝑎,𝑏,𝑖,𝑥,𝑦 Allowed substitution hints: 𝜑(𝑖,𝑎,𝑏) 𝐴(𝑖) 𝐵(𝑥,𝑦,𝑖,𝑎,𝑏) + (𝑥,𝑦,𝑖,𝑎,𝑏) · (𝑥,𝑦,𝑖,𝑎,𝑏) 𝑈(𝑥,𝑦,𝑖,𝑎,𝑏) 𝐹(𝑥,𝑦,𝑖,𝑎,𝑏) 𝑊(𝑥,𝑦,𝑖,𝑎,𝑏) 0 (𝑥,𝑦,𝑖,𝑎,𝑏)

**Proof of Theorem mnringmulrd**
Step	Hyp	Ref	Expression
1		mnringmulrd.1	. . . 4 ⊢ 𝐹 = (𝑅 MndRing 𝑀)
2		mnringmulrd.2	. . . 4 ⊢ 𝐵 = (Base‘𝐹)
3		mnringmulrd.5	. . . 4 ⊢ 𝐴 = (Base‘𝑀)
4		eqid 2732	. . . 4 ⊢ (𝑅 freeLMod 𝐴) = (𝑅 freeLMod 𝐴)
5		mnringmulrd.7	. . . 4 ⊢ (𝜑 → 𝑅 ∈ 𝑈)
6		mnringmulrd.8	. . . 4 ⊢ (𝜑 → 𝑀 ∈ 𝑊)
7	1, 2, 3, 4, 5, 6	mnringbaserd 42962	. . 3 ⊢ (𝜑 → 𝐵 = (Base‘(𝑅 freeLMod 𝐴)))
8	3	fvexi 6905	. . . . . 6 ⊢ 𝐴 ∈ V
9	8, 8	mpoex 8065	. . . . 5 ⊢ (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))) ∈ V
10	9	a1i 11	. . . 4 ⊢ (𝜑 → (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))) ∈ V)
11	1	ovexi 7442	. . . . 5 ⊢ 𝐹 ∈ V
12	11	a1i 11	. . . 4 ⊢ (𝜑 → 𝐹 ∈ V)
13		ovex 7441	. . . . 5 ⊢ (𝑅 freeLMod 𝐴) ∈ V
14	13	a1i 11	. . . 4 ⊢ (𝜑 → (𝑅 freeLMod 𝐴) ∈ V)
15	2, 7	eqtr3id 2786	. . . 4 ⊢ (𝜑 → (Base‘𝐹) = (Base‘(𝑅 freeLMod 𝐴)))
16	1, 3, 4, 5, 6	mnringaddgd 42966	. . . . 5 ⊢ (𝜑 → (+_g‘(𝑅 freeLMod 𝐴)) = (+_g‘𝐹))
17	16	eqcomd 2738	. . . 4 ⊢ (𝜑 → (+_g‘𝐹) = (+_g‘(𝑅 freeLMod 𝐴)))
18	10, 12, 14, 15, 17	gsumpropd 18596	. . 3 ⊢ (𝜑 → (𝐹 Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))) = ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))))
19	7, 7, 18	mpoeq123dv 7483	. 2 ⊢ (𝜑 → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ (𝐹 Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))))
20		fvex 6904	. . . . 5 ⊢ (Base‘(𝑅 freeLMod 𝐴)) ∈ V
21	20, 20	mpoex 8065	. . . 4 ⊢ (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) ∈ V
22		mulridx 17238	. . . . 5 ⊢ ._r = Slot (._r‘ndx)
23	22	setsid 17140	. . . 4 ⊢ (((𝑅 freeLMod 𝐴) ∈ V ∧ (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) ∈ V) → (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (._r‘((𝑅 freeLMod 𝐴) sSet ⟨(._r‘ndx), (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))))⟩)))
24	13, 21, 23	mp2an 690	. . 3 ⊢ (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (._r‘((𝑅 freeLMod 𝐴) sSet ⟨(._r‘ndx), (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))))⟩))
25		mnringmulrd.3	. . . . 5 ⊢ · = (._r‘𝑅)
26		mnringmulrd.4	. . . . 5 ⊢ 0 = (0_g‘𝑅)
27		mnringmulrd.6	. . . . 5 ⊢ + = (+_g‘𝑀)
28		eqid 2732	. . . . 5 ⊢ (Base‘(𝑅 freeLMod 𝐴)) = (Base‘(𝑅 freeLMod 𝐴))
29	1, 25, 26, 3, 27, 4, 28, 5, 6	mnringvald 42957	. . . 4 ⊢ (𝜑 → 𝐹 = ((𝑅 freeLMod 𝐴) sSet ⟨(._r‘ndx), (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))))⟩))
30	29	fveq2d 6895	. . 3 ⊢ (𝜑 → (._r‘𝐹) = (._r‘((𝑅 freeLMod 𝐴) sSet ⟨(._r‘ndx), (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 )))))⟩)))
31	24, 30	eqtr4id 2791	. 2 ⊢ (𝜑 → (𝑥 ∈ (Base‘(𝑅 freeLMod 𝐴)), 𝑦 ∈ (Base‘(𝑅 freeLMod 𝐴)) ↦ ((𝑅 freeLMod 𝐴) Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (._r‘𝐹))
32	19, 31	eqtrd 2772	1 ⊢ (𝜑 → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ (𝐹 Σ_g (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐴 ↦ (𝑖 ∈ 𝐴 ↦ if(𝑖 = (𝑎 + 𝑏), ((𝑥‘𝑎) · (𝑦‘𝑏)), 0 ))))) = (._r‘𝐹))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 Vcvv 3474 ifcif 4528 ⟨cop 4634 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7408 ∈ cmpo 7410 sSet csts 17095 ndxcnx 17125 Basecbs 17143 +_gcplusg 17196 ._rcmulr 17197 0_gc0g 17384 Σ_g cgsu 17385 freeLMod cfrlm 21300 MndRing cmnring 42955

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-nn 12212 df-2 12274 df-3 12275 df-seq 13966 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-plusg 17209 df-mulr 17210 df-0g 17386 df-gsum 17387 df-mnring 42956

This theorem is referenced by: mnringmulrvald 42976

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