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Mirrors > Home > HSE Home > Th. List > ococ | Structured version Visualization version GIF version |
Description: Complement of complement of a closed subspace of Hilbert space. Theorem 3.7(ii) of [Beran] p. 102. (Contributed by NM, 11-Oct-1999.) (New usage is discouraged.) |
Ref | Expression |
---|---|
ococ | ⊢ (𝐴 ∈ Cℋ → (⊥‘(⊥‘𝐴)) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2fveq3 6830 | . . 3 ⊢ (𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ) → (⊥‘(⊥‘𝐴)) = (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ)))) | |
2 | id 22 | . . 3 ⊢ (𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ) → 𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ)) | |
3 | 1, 2 | eqeq12d 2752 | . 2 ⊢ (𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ) → ((⊥‘(⊥‘𝐴)) = 𝐴 ↔ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ))) |
4 | ifchhv 29894 | . . 3 ⊢ if(𝐴 ∈ Cℋ , 𝐴, ℋ) ∈ Cℋ | |
5 | 4 | ococi 30055 | . 2 ⊢ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ) |
6 | 3, 5 | dedth 4531 | 1 ⊢ (𝐴 ∈ Cℋ → (⊥‘(⊥‘𝐴)) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2105 ifcif 4473 ‘cfv 6479 ℋchba 29569 Cℋ cch 29579 ⊥cort 29580 |
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 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-rep 5229 ax-sep 5243 ax-nul 5250 ax-pow 5308 ax-pr 5372 ax-un 7650 ax-inf2 9498 ax-cc 10292 ax-cnex 11028 ax-resscn 11029 ax-1cn 11030 ax-icn 11031 ax-addcl 11032 ax-addrcl 11033 ax-mulcl 11034 ax-mulrcl 11035 ax-mulcom 11036 ax-addass 11037 ax-mulass 11038 ax-distr 11039 ax-i2m1 11040 ax-1ne0 11041 ax-1rid 11042 ax-rnegex 11043 ax-rrecex 11044 ax-cnre 11045 ax-pre-lttri 11046 ax-pre-lttrn 11047 ax-pre-ltadd 11048 ax-pre-mulgt0 11049 ax-pre-sup 11050 ax-addf 11051 ax-mulf 11052 ax-hilex 29649 ax-hfvadd 29650 ax-hvcom 29651 ax-hvass 29652 ax-hv0cl 29653 ax-hvaddid 29654 ax-hfvmul 29655 ax-hvmulid 29656 ax-hvmulass 29657 ax-hvdistr1 29658 ax-hvdistr2 29659 ax-hvmul0 29660 ax-hfi 29729 ax-his1 29732 ax-his2 29733 ax-his3 29734 ax-his4 29735 ax-hcompl 29852 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3349 df-reu 3350 df-rab 3404 df-v 3443 df-sbc 3728 df-csb 3844 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3917 df-nul 4270 df-if 4474 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4853 df-int 4895 df-iun 4943 df-iin 4944 df-br 5093 df-opab 5155 df-mpt 5176 df-tr 5210 df-id 5518 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5575 df-se 5576 df-we 5577 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6238 df-ord 6305 df-on 6306 df-lim 6307 df-suc 6308 df-iota 6431 df-fun 6481 df-fn 6482 df-f 6483 df-f1 6484 df-fo 6485 df-f1o 6486 df-fv 6487 df-isom 6488 df-riota 7293 df-ov 7340 df-oprab 7341 df-mpo 7342 df-om 7781 df-1st 7899 df-2nd 7900 df-frecs 8167 df-wrecs 8198 df-recs 8272 df-rdg 8311 df-1o 8367 df-oadd 8371 df-omul 8372 df-er 8569 df-map 8688 df-pm 8689 df-en 8805 df-dom 8806 df-sdom 8807 df-fin 8808 df-fi 9268 df-sup 9299 df-inf 9300 df-oi 9367 df-card 9796 df-acn 9799 df-pnf 11112 df-mnf 11113 df-xr 11114 df-ltxr 11115 df-le 11116 df-sub 11308 df-neg 11309 df-div 11734 df-nn 12075 df-2 12137 df-3 12138 df-4 12139 df-n0 12335 df-z 12421 df-uz 12684 df-q 12790 df-rp 12832 df-xneg 12949 df-xadd 12950 df-xmul 12951 df-ico 13186 df-icc 13187 df-fz 13341 df-fl 13613 df-seq 13823 df-exp 13884 df-cj 14909 df-re 14910 df-im 14911 df-sqrt 15045 df-abs 15046 df-clim 15296 df-rlim 15297 df-rest 17230 df-topgen 17251 df-psmet 20695 df-xmet 20696 df-met 20697 df-bl 20698 df-mopn 20699 df-fbas 20700 df-fg 20701 df-top 22149 df-topon 22166 df-bases 22202 df-cld 22276 df-ntr 22277 df-cls 22278 df-nei 22355 df-lm 22486 df-haus 22572 df-fil 23103 df-fm 23195 df-flim 23196 df-flf 23197 df-cfil 24525 df-cau 24526 df-cmet 24527 df-grpo 29143 df-gid 29144 df-ginv 29145 df-gdiv 29146 df-ablo 29195 df-vc 29209 df-nv 29242 df-va 29245 df-ba 29246 df-sm 29247 df-0v 29248 df-vs 29249 df-nmcv 29250 df-ims 29251 df-ssp 29372 df-ph 29463 df-cbn 29513 df-hnorm 29618 df-hba 29619 df-hvsub 29621 df-hlim 29622 df-hcau 29623 df-sh 29857 df-ch 29871 df-oc 29902 df-ch0 29903 |
This theorem is referenced by: dfch2 30057 ococin 30058 shlub 30064 pjhtheu2 30066 shjshseli 30143 chsscon1 30151 chpsscon1 30154 chpsscon2 30155 chdmm2 30176 chdmm3 30177 chdmm4 30178 chdmj1 30179 chdmj2 30180 chdmj3 30181 chdmj4 30182 fh2 30269 hstle 30880 hstoh 30882 mddmd 30951 |
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