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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 6906 | . . 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 2742 | . 2 ⊢ (𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ) → ((⊥‘(⊥‘𝐴)) = 𝐴 ↔ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ))) |
4 | ifchhv 31177 | . . 3 ⊢ if(𝐴 ∈ Cℋ , 𝐴, ℋ) ∈ Cℋ | |
5 | 4 | ococi 31338 | . 2 ⊢ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ) |
6 | 3, 5 | dedth 4591 | 1 ⊢ (𝐴 ∈ Cℋ → (⊥‘(⊥‘𝐴)) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1534 ∈ wcel 2099 ifcif 4533 ‘cfv 6554 ℋchba 30852 Cℋ cch 30862 ⊥cort 30863 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2697 ax-rep 5290 ax-sep 5304 ax-nul 5311 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-inf2 9684 ax-cc 10478 ax-cnex 11214 ax-resscn 11215 ax-1cn 11216 ax-icn 11217 ax-addcl 11218 ax-addrcl 11219 ax-mulcl 11220 ax-mulrcl 11221 ax-mulcom 11222 ax-addass 11223 ax-mulass 11224 ax-distr 11225 ax-i2m1 11226 ax-1ne0 11227 ax-1rid 11228 ax-rnegex 11229 ax-rrecex 11230 ax-cnre 11231 ax-pre-lttri 11232 ax-pre-lttrn 11233 ax-pre-ltadd 11234 ax-pre-mulgt0 11235 ax-pre-sup 11236 ax-addf 11237 ax-mulf 11238 ax-hilex 30932 ax-hfvadd 30933 ax-hvcom 30934 ax-hvass 30935 ax-hv0cl 30936 ax-hvaddid 30937 ax-hfvmul 30938 ax-hvmulid 30939 ax-hvmulass 30940 ax-hvdistr1 30941 ax-hvdistr2 30942 ax-hvmul0 30943 ax-hfi 31012 ax-his1 31015 ax-his2 31016 ax-his3 31017 ax-his4 31018 ax-hcompl 31135 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2704 df-cleq 2718 df-clel 2803 df-nfc 2878 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3464 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3967 df-nul 4326 df-if 4534 df-pw 4609 df-sn 4634 df-pr 4636 df-op 4640 df-uni 4914 df-int 4955 df-iun 5003 df-iin 5004 df-br 5154 df-opab 5216 df-mpt 5237 df-tr 5271 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-se 5638 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6312 df-ord 6379 df-on 6380 df-lim 6381 df-suc 6382 df-iota 6506 df-fun 6556 df-fn 6557 df-f 6558 df-f1 6559 df-fo 6560 df-f1o 6561 df-fv 6562 df-isom 6563 df-riota 7380 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7877 df-1st 8003 df-2nd 8004 df-frecs 8296 df-wrecs 8327 df-recs 8401 df-rdg 8440 df-1o 8496 df-2o 8497 df-oadd 8500 df-omul 8501 df-er 8734 df-map 8857 df-pm 8858 df-en 8975 df-dom 8976 df-sdom 8977 df-fin 8978 df-fi 9454 df-sup 9485 df-inf 9486 df-oi 9553 df-card 9982 df-acn 9985 df-pnf 11300 df-mnf 11301 df-xr 11302 df-ltxr 11303 df-le 11304 df-sub 11496 df-neg 11497 df-div 11922 df-nn 12265 df-2 12327 df-3 12328 df-4 12329 df-n0 12525 df-z 12611 df-uz 12875 df-q 12985 df-rp 13029 df-xneg 13146 df-xadd 13147 df-xmul 13148 df-ico 13384 df-icc 13385 df-fz 13539 df-fl 13812 df-seq 14022 df-exp 14082 df-cj 15104 df-re 15105 df-im 15106 df-sqrt 15240 df-abs 15241 df-clim 15490 df-rlim 15491 df-rest 17437 df-topgen 17458 df-psmet 21335 df-xmet 21336 df-met 21337 df-bl 21338 df-mopn 21339 df-fbas 21340 df-fg 21341 df-top 22887 df-topon 22904 df-bases 22940 df-cld 23014 df-ntr 23015 df-cls 23016 df-nei 23093 df-lm 23224 df-haus 23310 df-fil 23841 df-fm 23933 df-flim 23934 df-flf 23935 df-cfil 25274 df-cau 25275 df-cmet 25276 df-grpo 30426 df-gid 30427 df-ginv 30428 df-gdiv 30429 df-ablo 30478 df-vc 30492 df-nv 30525 df-va 30528 df-ba 30529 df-sm 30530 df-0v 30531 df-vs 30532 df-nmcv 30533 df-ims 30534 df-ssp 30655 df-ph 30746 df-cbn 30796 df-hnorm 30901 df-hba 30902 df-hvsub 30904 df-hlim 30905 df-hcau 30906 df-sh 31140 df-ch 31154 df-oc 31185 df-ch0 31186 |
This theorem is referenced by: dfch2 31340 ococin 31341 shlub 31347 pjhtheu2 31349 shjshseli 31426 chsscon1 31434 chpsscon1 31437 chpsscon2 31438 chdmm2 31459 chdmm3 31460 chdmm4 31461 chdmj1 31462 chdmj2 31463 chdmj3 31464 chdmj4 31465 fh2 31552 hstle 32163 hstoh 32165 mddmd 32234 |
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