Theorem lmod1zr 42076

Description: The (smallest) structure representing a zero module over a zero ring. (Contributed by AV, 29-Apr-2019.)

Hypotheses

Ref	Expression
lmod1zr.r	⊢ 𝑅 = {⟨(Base‘ndx), {𝑍}⟩, ⟨(+g‘ndx), {⟨⟨𝑍, 𝑍⟩, 𝑍⟩}⟩, ⟨(.r‘ndx), {⟨⟨𝑍, 𝑍⟩, 𝑍⟩}⟩}
lmod1zr.m	⊢ 𝑀 = ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}⟩})

Assertion

Ref	Expression
lmod1zr	⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝑀 ∈ LMod)

Proof of Theorem lmod1zr

Dummy variables 𝑎 𝑏 𝑖 𝑝 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		lmod1zr.m	. . 3 ⊢ 𝑀 = ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}⟩})
2		elsni 4142	. . . . . . . . . . 11 ⊢ (𝑝 ∈ {⟨𝑍, 𝐼⟩} → 𝑝 = ⟨𝑍, 𝐼⟩)
3		fveq2 6103	. . . . . . . . . . . . 13 ⊢ (𝑝 = ⟨𝑍, 𝐼⟩ → (2nd ‘𝑝) = (2nd ‘⟨𝑍, 𝐼⟩))
4	3	adantl 481	. . . . . . . . . . . 12 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑝 = ⟨𝑍, 𝐼⟩) → (2nd ‘𝑝) = (2nd ‘⟨𝑍, 𝐼⟩))
5		op2ndg 7072	. . . . . . . . . . . . . . 15 ⊢ ((𝑍 ∈ 𝑊 ∧ 𝐼 ∈ 𝑉) → (2nd ‘⟨𝑍, 𝐼⟩) = 𝐼)
6	5	ancoms 468	. . . . . . . . . . . . . 14 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (2nd ‘⟨𝑍, 𝐼⟩) = 𝐼)
7		snidg 4153	. . . . . . . . . . . . . . 15 ⊢ (𝐼 ∈ 𝑉 → 𝐼 ∈ {𝐼})
8	7	adantr 480	. . . . . . . . . . . . . 14 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝐼 ∈ {𝐼})
9	6, 8	eqeltrd 2688	. . . . . . . . . . . . 13 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (2nd ‘⟨𝑍, 𝐼⟩) ∈ {𝐼})
10	9	adantr 480	. . . . . . . . . . . 12 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑝 = ⟨𝑍, 𝐼⟩) → (2nd ‘⟨𝑍, 𝐼⟩) ∈ {𝐼})
11	4, 10	eqeltrd 2688	. . . . . . . . . . 11 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑝 = ⟨𝑍, 𝐼⟩) → (2nd ‘𝑝) ∈ {𝐼})
12	2, 11	sylan2 490	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑝 ∈ {⟨𝑍, 𝐼⟩}) → (2nd ‘𝑝) ∈ {𝐼})
13		eqid 2610	. . . . . . . . . 10 ⊢ (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)) = (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝))
14	12, 13	fmptd 6292	. . . . . . . . 9 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)):{⟨𝑍, 𝐼⟩}⟶{𝐼})
15		opex 4859	. . . . . . . . . 10 ⊢ ⟨𝑍, 𝐼⟩ ∈ V
16		simpl 472	. . . . . . . . . 10 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝐼 ∈ 𝑉)
17		fsng 6310	. . . . . . . . . 10 ⊢ ((⟨𝑍, 𝐼⟩ ∈ V ∧ 𝐼 ∈ 𝑉) → ((𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)):{⟨𝑍, 𝐼⟩}⟶{𝐼} ↔ (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)) = {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}))
18	15, 16, 17	sylancr 694	. . . . . . . . 9 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → ((𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)):{⟨𝑍, 𝐼⟩}⟶{𝐼} ↔ (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)) = {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}))
19	14, 18	mpbid 221	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)) = {⟨⟨𝑍, 𝐼⟩, 𝐼⟩})
20		xpsng 6312	. . . . . . . . . . 11 ⊢ ((𝑍 ∈ 𝑊 ∧ 𝐼 ∈ 𝑉) → ({𝑍} × {𝐼}) = {⟨𝑍, 𝐼⟩})
21	20	ancoms 468	. . . . . . . . . 10 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → ({𝑍} × {𝐼}) = {⟨𝑍, 𝐼⟩})
22	21	eqcomd 2616	. . . . . . . . 9 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {⟨𝑍, 𝐼⟩} = ({𝑍} × {𝐼}))
23	22	mpteq1d 4666	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑝 ∈ {⟨𝑍, 𝐼⟩} ↦ (2nd ‘𝑝)) = (𝑝 ∈ ({𝑍} × {𝐼}) ↦ (2nd ‘𝑝)))
24	19, 23	eqtr3d 2646	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {⟨⟨𝑍, 𝐼⟩, 𝐼⟩} = (𝑝 ∈ ({𝑍} × {𝐼}) ↦ (2nd ‘𝑝)))
25		vex 3176	. . . . . . . . . 10 ⊢ 𝑧 ∈ V
26		vex 3176	. . . . . . . . . 10 ⊢ 𝑖 ∈ V
27	25, 26	op2ndd 7070	. . . . . . . . 9 ⊢ (𝑝 = ⟨𝑧, 𝑖⟩ → (2nd ‘𝑝) = 𝑖)
28	27	mpt2mpt 6650	. . . . . . . 8 ⊢ (𝑝 ∈ ({𝑍} × {𝐼}) ↦ (2nd ‘𝑝)) = (𝑧 ∈ {𝑍}, 𝑖 ∈ {𝐼} ↦ 𝑖)
29	28	a1i 11	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑝 ∈ ({𝑍} × {𝐼}) ↦ (2nd ‘𝑝)) = (𝑧 ∈ {𝑍}, 𝑖 ∈ {𝐼} ↦ 𝑖))
30		snex 4835	. . . . . . . . 9 ⊢ {𝑍} ∈ V
31		lmod1zr.r	. . . . . . . . . 10 ⊢ 𝑅 = {⟨(Base‘ndx), {𝑍}⟩, ⟨(+g‘ndx), {⟨⟨𝑍, 𝑍⟩, 𝑍⟩}⟩, ⟨(.r‘ndx), {⟨⟨𝑍, 𝑍⟩, 𝑍⟩}⟩}
32	31	rngbase 15824	. . . . . . . . 9 ⊢ ({𝑍} ∈ V → {𝑍} = (Base‘𝑅))
33	30, 32	mp1i 13	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {𝑍} = (Base‘𝑅))
34		eqidd 2611	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {𝐼} = {𝐼})
35		mpt2eq12 6613	. . . . . . . 8 ⊢ (({𝑍} = (Base‘𝑅) ∧ {𝐼} = {𝐼}) → (𝑧 ∈ {𝑍}, 𝑖 ∈ {𝐼} ↦ 𝑖) = (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖))
36	33, 34, 35	syl2anc 691	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑧 ∈ {𝑍}, 𝑖 ∈ {𝐼} ↦ 𝑖) = (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖))
37	24, 29, 36	3eqtrd 2648	. . . . . 6 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {⟨⟨𝑍, 𝐼⟩, 𝐼⟩} = (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖))
38	37	opeq2d 4347	. . . . 5 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → ⟨( ·𝑠 ‘ndx), {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}⟩ = ⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩)
39	38	sneqd 4137	. . . 4 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {⟨( ·𝑠 ‘ndx), {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}⟩} = {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩})
40	39	uneq2d 3729	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), {⟨⟨𝑍, 𝐼⟩, 𝐼⟩}⟩}) = ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩}))
41	1, 40	syl5eq 2656	. 2 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝑀 = ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩}))
42	31	ring1 18425	. . 3 ⊢ (𝑍 ∈ 𝑊 → 𝑅 ∈ Ring)
43		eqidd 2611	. . . . . . . 8 ⊢ (𝑧 = 𝑎 → 𝑖 = 𝑖)
44		id 22	. . . . . . . 8 ⊢ (𝑖 = 𝑏 → 𝑖 = 𝑏)
45	43, 44	cbvmpt2v 6633	. . . . . . 7 ⊢ (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖) = (𝑎 ∈ (Base‘𝑅), 𝑏 ∈ {𝐼} ↦ 𝑏)
46	45	opeq2i 4344	. . . . . 6 ⊢ ⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩ = ⟨( ·𝑠 ‘ndx), (𝑎 ∈ (Base‘𝑅), 𝑏 ∈ {𝐼} ↦ 𝑏)⟩
47	46	sneqi 4136	. . . . 5 ⊢ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩} = {⟨( ·𝑠 ‘ndx), (𝑎 ∈ (Base‘𝑅), 𝑏 ∈ {𝐼} ↦ 𝑏)⟩}
48	47	uneq2i 3726	. . . 4 ⊢ ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩}) = ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑎 ∈ (Base‘𝑅), 𝑏 ∈ {𝐼} ↦ 𝑏)⟩})
49	48	lmod1 42075	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑅 ∈ Ring) → ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩}) ∈ LMod)
50	42, 49	sylan2 490	. 2 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → ({⟨(Base‘ndx), {𝐼}⟩, ⟨(+g‘ndx), {⟨⟨𝐼, 𝐼⟩, 𝐼⟩}⟩, ⟨(Scalar‘ndx), 𝑅⟩} ∪ {⟨( ·𝑠 ‘ndx), (𝑧 ∈ (Base‘𝑅), 𝑖 ∈ {𝐼} ↦ 𝑖)⟩}) ∈ LMod)
51	41, 50	eqeltrd 2688	1 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝑀 ∈ LMod)

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  Vcvv 3173   ∪ cun 3538  {csn 4125  {ctp 4129  ⟨cop 4131   ↦ cmpt 4643   × cxp 5036  ⟶wf 5800  ‘cfv 5804   ↦ cmpt2 6551  2^nd c2nd 7058  ndxcnx 15692  Basecbs 15695  +_gcplusg 15768  ._rcmulr 15769  Scalarcsca 15771   ·_𝑠 cvsca 15772  Ringcrg 18370  LModclmod 18686

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-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

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  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-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-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-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-oadd 7451  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-n0 11170  df-z 11255  df-uz 11564  df-fz 12198  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-0g 15925  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-grp 17248  df-mgp 18313  df-ur 18325  df-ring 18372  df-lmod 18688

This theorem is referenced by:  lmodn0  42078  lvecpsslmod  42090