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Theorem sspval 27887
Description: The set of all subspaces of a normed complex vector space. (Contributed by NM, 26-Jan-2008.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.)
Hypotheses
Ref Expression
sspval.g 𝐺 = ( +𝑣𝑈)
sspval.s 𝑆 = ( ·𝑠OLD𝑈)
sspval.n 𝑁 = (normCV𝑈)
sspval.h 𝐻 = (SubSp‘𝑈)
Assertion
Ref Expression
sspval (𝑈 ∈ NrmCVec → 𝐻 = {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)})
Distinct variable groups:   𝑤,𝐺   𝑤,𝑁   𝑤,𝑆   𝑤,𝑈
Allowed substitution hint:   𝐻(𝑤)

Proof of Theorem sspval
Dummy variable 𝑢 is distinct from all other variables.
StepHypRef Expression
1 sspval.h . 2 𝐻 = (SubSp‘𝑈)
2 fveq2 6352 . . . . . . 7 (𝑢 = 𝑈 → ( +𝑣𝑢) = ( +𝑣𝑈))
3 sspval.g . . . . . . 7 𝐺 = ( +𝑣𝑈)
42, 3syl6eqr 2812 . . . . . 6 (𝑢 = 𝑈 → ( +𝑣𝑢) = 𝐺)
54sseq2d 3774 . . . . 5 (𝑢 = 𝑈 → (( +𝑣𝑤) ⊆ ( +𝑣𝑢) ↔ ( +𝑣𝑤) ⊆ 𝐺))
6 fveq2 6352 . . . . . . 7 (𝑢 = 𝑈 → ( ·𝑠OLD𝑢) = ( ·𝑠OLD𝑈))
7 sspval.s . . . . . . 7 𝑆 = ( ·𝑠OLD𝑈)
86, 7syl6eqr 2812 . . . . . 6 (𝑢 = 𝑈 → ( ·𝑠OLD𝑢) = 𝑆)
98sseq2d 3774 . . . . 5 (𝑢 = 𝑈 → (( ·𝑠OLD𝑤) ⊆ ( ·𝑠OLD𝑢) ↔ ( ·𝑠OLD𝑤) ⊆ 𝑆))
10 fveq2 6352 . . . . . . 7 (𝑢 = 𝑈 → (normCV𝑢) = (normCV𝑈))
11 sspval.n . . . . . . 7 𝑁 = (normCV𝑈)
1210, 11syl6eqr 2812 . . . . . 6 (𝑢 = 𝑈 → (normCV𝑢) = 𝑁)
1312sseq2d 3774 . . . . 5 (𝑢 = 𝑈 → ((normCV𝑤) ⊆ (normCV𝑢) ↔ (normCV𝑤) ⊆ 𝑁))
145, 9, 133anbi123d 1548 . . . 4 (𝑢 = 𝑈 → ((( +𝑣𝑤) ⊆ ( +𝑣𝑢) ∧ ( ·𝑠OLD𝑤) ⊆ ( ·𝑠OLD𝑢) ∧ (normCV𝑤) ⊆ (normCV𝑢)) ↔ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)))
1514rabbidv 3329 . . 3 (𝑢 = 𝑈 → {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ ( +𝑣𝑢) ∧ ( ·𝑠OLD𝑤) ⊆ ( ·𝑠OLD𝑢) ∧ (normCV𝑤) ⊆ (normCV𝑢))} = {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)})
16 df-ssp 27886 . . 3 SubSp = (𝑢 ∈ NrmCVec ↦ {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ ( +𝑣𝑢) ∧ ( ·𝑠OLD𝑤) ⊆ ( ·𝑠OLD𝑢) ∧ (normCV𝑤) ⊆ (normCV𝑢))})
17 fvex 6362 . . . . . . . 8 ( +𝑣𝑈) ∈ V
183, 17eqeltri 2835 . . . . . . 7 𝐺 ∈ V
1918pwex 4997 . . . . . 6 𝒫 𝐺 ∈ V
20 fvex 6362 . . . . . . . 8 ( ·𝑠OLD𝑈) ∈ V
217, 20eqeltri 2835 . . . . . . 7 𝑆 ∈ V
2221pwex 4997 . . . . . 6 𝒫 𝑆 ∈ V
2319, 22xpex 7127 . . . . 5 (𝒫 𝐺 × 𝒫 𝑆) ∈ V
24 fvex 6362 . . . . . . 7 (normCV𝑈) ∈ V
2511, 24eqeltri 2835 . . . . . 6 𝑁 ∈ V
2625pwex 4997 . . . . 5 𝒫 𝑁 ∈ V
2723, 26xpex 7127 . . . 4 ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁) ∈ V
28 rabss 3820 . . . . 5 ({𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)} ⊆ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁) ↔ ∀𝑤 ∈ NrmCVec ((( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁) → 𝑤 ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁)))
29 fvex 6362 . . . . . . . . . 10 ( +𝑣𝑤) ∈ V
3029elpw 4308 . . . . . . . . 9 (( +𝑣𝑤) ∈ 𝒫 𝐺 ↔ ( +𝑣𝑤) ⊆ 𝐺)
31 fvex 6362 . . . . . . . . . 10 ( ·𝑠OLD𝑤) ∈ V
3231elpw 4308 . . . . . . . . 9 (( ·𝑠OLD𝑤) ∈ 𝒫 𝑆 ↔ ( ·𝑠OLD𝑤) ⊆ 𝑆)
33 opelxpi 5305 . . . . . . . . 9 ((( +𝑣𝑤) ∈ 𝒫 𝐺 ∧ ( ·𝑠OLD𝑤) ∈ 𝒫 𝑆) → ⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩ ∈ (𝒫 𝐺 × 𝒫 𝑆))
3430, 32, 33syl2anbr 498 . . . . . . . 8 ((( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆) → ⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩ ∈ (𝒫 𝐺 × 𝒫 𝑆))
35 fvex 6362 . . . . . . . . . 10 (normCV𝑤) ∈ V
3635elpw 4308 . . . . . . . . 9 ((normCV𝑤) ∈ 𝒫 𝑁 ↔ (normCV𝑤) ⊆ 𝑁)
3736biimpri 218 . . . . . . . 8 ((normCV𝑤) ⊆ 𝑁 → (normCV𝑤) ∈ 𝒫 𝑁)
38 opelxpi 5305 . . . . . . . 8 ((⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩ ∈ (𝒫 𝐺 × 𝒫 𝑆) ∧ (normCV𝑤) ∈ 𝒫 𝑁) → ⟨⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩, (normCV𝑤)⟩ ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁))
3934, 37, 38syl2an 495 . . . . . . 7 (((( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆) ∧ (normCV𝑤) ⊆ 𝑁) → ⟨⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩, (normCV𝑤)⟩ ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁))
40393impa 1101 . . . . . 6 ((( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁) → ⟨⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩, (normCV𝑤)⟩ ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁))
41 eqid 2760 . . . . . . . 8 ( +𝑣𝑤) = ( +𝑣𝑤)
42 eqid 2760 . . . . . . . 8 ( ·𝑠OLD𝑤) = ( ·𝑠OLD𝑤)
43 eqid 2760 . . . . . . . 8 (normCV𝑤) = (normCV𝑤)
4441, 42, 43nvop 27840 . . . . . . 7 (𝑤 ∈ NrmCVec → 𝑤 = ⟨⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩, (normCV𝑤)⟩)
4544eleq1d 2824 . . . . . 6 (𝑤 ∈ NrmCVec → (𝑤 ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁) ↔ ⟨⟨( +𝑣𝑤), ( ·𝑠OLD𝑤)⟩, (normCV𝑤)⟩ ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁)))
4640, 45syl5ibr 236 . . . . 5 (𝑤 ∈ NrmCVec → ((( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁) → 𝑤 ∈ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁)))
4728, 46mprgbir 3065 . . . 4 {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)} ⊆ ((𝒫 𝐺 × 𝒫 𝑆) × 𝒫 𝑁)
4827, 47ssexi 4955 . . 3 {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)} ∈ V
4915, 16, 48fvmpt 6444 . 2 (𝑈 ∈ NrmCVec → (SubSp‘𝑈) = {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)})
501, 49syl5eq 2806 1 (𝑈 ∈ NrmCVec → 𝐻 = {𝑤 ∈ NrmCVec ∣ (( +𝑣𝑤) ⊆ 𝐺 ∧ ( ·𝑠OLD𝑤) ⊆ 𝑆 ∧ (normCV𝑤) ⊆ 𝑁)})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383  w3a 1072   = wceq 1632  wcel 2139  {crab 3054  Vcvv 3340  wss 3715  𝒫 cpw 4302  cop 4327   × cxp 5264  cfv 6049  NrmCVeccnv 27748   +𝑣 cpv 27749   ·𝑠OLD cns 27751  normCVcnmcv 27754  SubSpcss 27885
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-sbc 3577  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-op 4328  df-uni 4589  df-br 4805  df-opab 4865  df-mpt 4882  df-id 5174  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-fo 6055  df-fv 6057  df-oprab 6817  df-1st 7333  df-2nd 7334  df-vc 27723  df-nv 27756  df-va 27759  df-sm 27761  df-nmcv 27764  df-ssp 27886
This theorem is referenced by:  isssp  27888
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