Theorem dib1dim 41658

Description: Two expressions for the 1-dimensional subspaces of vector space H. (Contributed by NM, 24-Feb-2014.) (Revised by Mario Carneiro, 24-Jun-2014.)

Hypotheses

Ref	Expression
dib1dim.b	⊢ 𝐵 = (Base‘𝐾)
dib1dim.h	⊢ 𝐻 = (LHyp‘𝐾)
dib1dim.t	⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
dib1dim.r	⊢ 𝑅 = ((trL‘𝐾)‘𝑊)
dib1dim.e	⊢ 𝐸 = ((TEndo‘𝐾)‘𝑊)
dib1dim.o	⊢ 𝑂 = (ℎ ∈ 𝑇 ↦ ( I ↾ 𝐵))
dib1dim.i	⊢ 𝐼 = ((DIsoB‘𝐾)‘𝑊)

Assertion

Ref	Expression
dib1dim	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝐼‘(𝑅‘𝐹)) = {𝑔 ∈ (𝑇 × 𝐸) ∣ ∃𝑠 ∈ 𝐸 𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩})

Distinct variable groups:   𝐵,ℎ   𝑔,𝑠,𝐸   𝑔,𝐹,𝑠   𝐻,𝑠   ℎ,𝑠,𝐾   𝑔,𝑂,𝑠   𝑅,𝑠   𝑔,ℎ,𝑇,𝑠   ℎ,𝑊,𝑠

Allowed substitution hints:   𝐵(𝑔,𝑠)   𝑅(𝑔,ℎ)   𝐸(ℎ)   𝐹(ℎ)   𝐻(𝑔,ℎ)   𝐼(𝑔,ℎ,𝑠)   𝐾(𝑔)   𝑂(ℎ)   𝑊(𝑔)

Proof of Theorem dib1dim

Dummy variables 𝑓 𝑡 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl 483	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
2		dib1dim.b	. . . . 5 ⊢ 𝐵 = (Base‘𝐾)
3		dib1dim.h	. . . . 5 ⊢ 𝐻 = (LHyp‘𝐾)
4		dib1dim.t	. . . . 5 ⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
5		dib1dim.r	. . . . 5 ⊢ 𝑅 = ((trL‘𝐾)‘𝑊)
6	2, 3, 4, 5	trlcl 40657	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝑅‘𝐹) ∈ 𝐵)
7		eqid 2740	. . . . 5 ⊢ (le‘𝐾) = (le‘𝐾)
8	7, 3, 4, 5	trlle 40677	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝑅‘𝐹)(le‘𝐾)𝑊)
9		dib1dim.o	. . . . 5 ⊢ 𝑂 = (ℎ ∈ 𝑇 ↦ ( I ↾ 𝐵))
10		eqid 2740	. . . . 5 ⊢ ((DIsoA‘𝐾)‘𝑊) = ((DIsoA‘𝐾)‘𝑊)
11		dib1dim.i	. . . . 5 ⊢ 𝐼 = ((DIsoB‘𝐾)‘𝑊)
12	2, 7, 3, 4, 9, 10, 11	dibval2 41637	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑅‘𝐹) ∈ 𝐵 ∧ (𝑅‘𝐹)(le‘𝐾)𝑊)) → (𝐼‘(𝑅‘𝐹)) = ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂}))
13	1, 6, 8, 12	syl12anc 842	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝐼‘(𝑅‘𝐹)) = ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂}))
14		relxp 5643	. . . 4 ⊢ Rel ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂})
15		opelxp 5661	. . . . 5 ⊢ (⟨𝑓, 𝑡⟩ ∈ ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂}) ↔ (𝑓 ∈ (((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) ∧ 𝑡 ∈ {𝑂}))
16		dib1dim.e	. . . . . . . . 9 ⊢ 𝐸 = ((TEndo‘𝐾)‘𝑊)
17	3, 4, 5, 16, 10	dia1dim 41554	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) = {𝑓 ∣ ∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹)})
18	17	eqabrd 2881	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝑓 ∈ (((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) ↔ ∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹)))
19	18	anbi1d 637	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → ((𝑓 ∈ (((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) ∧ 𝑡 ∈ {𝑂}) ↔ (∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 ∈ {𝑂})))
20	3, 4, 16	tendocl 41260	. . . . . . . . . . . . 13 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑠 ∈ 𝐸 ∧ 𝐹 ∈ 𝑇) → (𝑠‘𝐹) ∈ 𝑇)
21	20	3expa 1124	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑠 ∈ 𝐸) ∧ 𝐹 ∈ 𝑇) → (𝑠‘𝐹) ∈ 𝑇)
22	21	an32s 658	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) ∧ 𝑠 ∈ 𝐸) → (𝑠‘𝐹) ∈ 𝑇)
23	2, 3, 4, 16, 9	tendo0cl 41283	. . . . . . . . . . . 12 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → 𝑂 ∈ 𝐸)
24	23	ad2antrr 732	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) ∧ 𝑠 ∈ 𝐸) → 𝑂 ∈ 𝐸)
25	22, 24	jca 516	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) ∧ 𝑠 ∈ 𝐸) → ((𝑠‘𝐹) ∈ 𝑇 ∧ 𝑂 ∈ 𝐸))
26		eleq1 2828	. . . . . . . . . . 11 ⊢ (𝑓 = (𝑠‘𝐹) → (𝑓 ∈ 𝑇 ↔ (𝑠‘𝐹) ∈ 𝑇))
27		eleq1 2828	. . . . . . . . . . 11 ⊢ (𝑡 = 𝑂 → (𝑡 ∈ 𝐸 ↔ 𝑂 ∈ 𝐸))
28	26, 27	bi2anan9 644	. . . . . . . . . 10 ⊢ ((𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂) → ((𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸) ↔ ((𝑠‘𝐹) ∈ 𝑇 ∧ 𝑂 ∈ 𝐸)))
29	25, 28	syl5ibrcom 248	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) ∧ 𝑠 ∈ 𝐸) → ((𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂) → (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸)))
30	29	rexlimdva 3141	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂) → (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸)))
31	30	pm4.71rd 567	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂) ↔ ((𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸) ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))))
32		velsn 4578	. . . . . . . . 9 ⊢ (𝑡 ∈ {𝑂} ↔ 𝑡 = 𝑂)
33	32	anbi2i 629	. . . . . . . 8 ⊢ ((∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 ∈ {𝑂}) ↔ (∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))
34		r19.41v 3170	. . . . . . . 8 ⊢ (∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂) ↔ (∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))
35	33, 34	bitr4i 279	. . . . . . 7 ⊢ ((∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 ∈ {𝑂}) ↔ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))
36		df-3an 1094	. . . . . . 7 ⊢ ((𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂)) ↔ ((𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸) ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂)))
37	31, 35, 36	3bitr4g 315	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → ((∃𝑠 ∈ 𝐸 𝑓 = (𝑠‘𝐹) ∧ 𝑡 ∈ {𝑂}) ↔ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))))
38	19, 37	bitrd 280	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → ((𝑓 ∈ (((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) ∧ 𝑡 ∈ {𝑂}) ↔ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))))
39	15, 38	bitrid 284	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (⟨𝑓, 𝑡⟩ ∈ ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂}) ↔ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))))
40	14, 39	opabbi2dv 5798	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → ((((DIsoA‘𝐾)‘𝑊)‘(𝑅‘𝐹)) × {𝑂}) = {⟨𝑓, 𝑡⟩ ∣ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))})
41	13, 40	eqtrd 2775	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝐼‘(𝑅‘𝐹)) = {⟨𝑓, 𝑡⟩ ∣ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))})
42		eqeq1 2744	. . . . 5 ⊢ (𝑔 = ⟨𝑓, 𝑡⟩ → (𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩ ↔ ⟨𝑓, 𝑡⟩ = ⟨(𝑠‘𝐹), 𝑂⟩))
43		vex 3436	. . . . . 6 ⊢ 𝑓 ∈ V
44		vex 3436	. . . . . 6 ⊢ 𝑡 ∈ V
45	43, 44	opth 5423	. . . . 5 ⊢ (⟨𝑓, 𝑡⟩ = ⟨(𝑠‘𝐹), 𝑂⟩ ↔ (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))
46	42, 45	bitrdi 288	. . . 4 ⊢ (𝑔 = ⟨𝑓, 𝑡⟩ → (𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩ ↔ (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂)))
47	46	rexbidv 3164	. . 3 ⊢ (𝑔 = ⟨𝑓, 𝑡⟩ → (∃𝑠 ∈ 𝐸 𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩ ↔ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂)))
48	47	rabxp 5673	. 2 ⊢ {𝑔 ∈ (𝑇 × 𝐸) ∣ ∃𝑠 ∈ 𝐸 𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩} = {⟨𝑓, 𝑡⟩ ∣ (𝑓 ∈ 𝑇 ∧ 𝑡 ∈ 𝐸 ∧ ∃𝑠 ∈ 𝐸 (𝑓 = (𝑠‘𝐹) ∧ 𝑡 = 𝑂))}
49	41, 48	eqtr4di 2793	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐹 ∈ 𝑇) → (𝐼‘(𝑅‘𝐹)) = {𝑔 ∈ (𝑇 × 𝐸) ∣ ∃𝑠 ∈ 𝐸 𝑔 = ⟨(𝑠‘𝐹), 𝑂⟩})

Syntax hints:   → wi 4   ∧ wa 396   ∧ w3a 1092   = wceq 1547   ∈ wcel 2119  ∃wrex 3064  {crab 3392  {csn 4562  ⟨cop 4568   class class class wbr 5079  {copab 5141   ↦ cmpt 5160   I cid 5519   × cxp 5623   ↾ cres 5627  ‘cfv 6492  Basecbs 17177  lecple 17225  HLchlt 39843  LHypclh 40477  LTrncltrn 40594  trLctrl 40651  TEndoctendo 41245  DIsoAcdia 41521  DIsoBcdib 41631

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-rep 5206  ax-sep 5225  ax-nul 5235  ax-pow 5301  ax-pr 5369  ax-un 7685  ax-riotaBAD 39446

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3or 1093  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ne 2936  df-ral 3055  df-rex 3065  df-rmo 3345  df-reu 3346  df-rab 3393  df-v 3434  df-sbc 3731  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-iun 4930  df-iin 4931  df-br 5080  df-opab 5142  df-mpt 5161  df-id 5520  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-riota 7320  df-ov 7366  df-oprab 7367  df-mpo 7368  df-1st 7938  df-2nd 7939  df-undef 8220  df-map 8772  df-proset 18258  df-poset 18277  df-plt 18292  df-lub 18308  df-glb 18309  df-join 18310  df-meet 18311  df-p0 18387  df-p1 18388  df-lat 18396  df-clat 18463  df-oposet 39669  df-ol 39671  df-oml 39672  df-covers 39759  df-ats 39760  df-atl 39791  df-cvlat 39815  df-hlat 39844  df-llines 39991  df-lplanes 39992  df-lvols 39993  df-lines 39994  df-psubsp 39996  df-pmap 39997  df-padd 40289  df-lhyp 40481  df-laut 40482  df-ldil 40597  df-ltrn 40598  df-trl 40652  df-tendo 41248  df-disoa 41522  df-dib 41632

This theorem is referenced by:  dib1dim2  41661