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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 6868 | . . 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 2777 | . 2 ⊢ (𝐴 = if(𝐴 ∈ Cℋ , 𝐴, ℋ) → ((⊥‘(⊥‘𝐴)) = 𝐴 ↔ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ))) |
| 4 | ifchhv 31393 | . . 3 ⊢ if(𝐴 ∈ Cℋ , 𝐴, ℋ) ∈ Cℋ | |
| 5 | 4 | ococi 31554 | . 2 ⊢ (⊥‘(⊥‘if(𝐴 ∈ Cℋ , 𝐴, ℋ))) = if(𝐴 ∈ Cℋ , 𝐴, ℋ) |
| 6 | 3, 5 | dedth 4538 | 1 ⊢ (𝐴 ∈ Cℋ → (⊥‘(⊥‘𝐴)) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 ifcif 4479 ‘cfv 6517 ℋchba 31068 Cℋ cch 31078 ⊥cort 31079 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-inf2 9593 ax-cc 10389 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 ax-pre-sup 11148 ax-addf 11149 ax-mulf 11150 ax-hilex 31148 ax-hfvadd 31149 ax-hvcom 31150 ax-hvass 31151 ax-hv0cl 31152 ax-hvaddid 31153 ax-hfvmul 31154 ax-hvmulid 31155 ax-hvmulass 31156 ax-hvdistr1 31157 ax-hvdistr2 31158 ax-hvmul0 31159 ax-hfi 31228 ax-his1 31231 ax-his2 31232 ax-his3 31233 ax-his4 31234 ax-hcompl 31351 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4905 df-iun 4950 df-iin 4951 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-se 5599 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-isom 6526 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-1st 7966 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-1o 8432 df-2o 8433 df-oadd 8436 df-omul 8437 df-er 8673 df-map 8805 df-pm 8806 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-fi 9354 df-sup 9385 df-inf 9386 df-oi 9455 df-card 9894 df-acn 9897 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-n0 12479 df-z 12566 df-uz 12837 df-q 12947 df-rp 12991 df-xneg 13111 df-xadd 13112 df-xmul 13113 df-ico 13352 df-icc 13353 df-fz 13510 df-fl 13799 df-seq 14012 df-exp 14072 df-cj 15109 df-re 15110 df-im 15111 df-sqrt 15245 df-abs 15246 df-clim 15498 df-rlim 15499 df-rest 17434 df-topgen 17455 df-psmet 21396 df-xmet 21397 df-met 21398 df-bl 21399 df-mopn 21400 df-fbas 21401 df-fg 21402 df-top 22934 df-topon 22951 df-bases 22986 df-cld 23059 df-ntr 23060 df-cls 23061 df-nei 23138 df-lm 23269 df-haus 23355 df-fil 23886 df-fm 23978 df-flim 23979 df-flf 23980 df-cfil 25297 df-cau 25298 df-cmet 25299 df-grpo 30642 df-gid 30643 df-ginv 30644 df-gdiv 30645 df-ablo 30694 df-vc 30708 df-nv 30741 df-va 30744 df-ba 30745 df-sm 30746 df-0v 30747 df-vs 30748 df-nmcv 30749 df-ims 30750 df-ssp 30871 df-ph 30962 df-cbn 31012 df-hnorm 31117 df-hba 31118 df-hvsub 31120 df-hlim 31121 df-hcau 31122 df-sh 31356 df-ch 31370 df-oc 31401 df-ch0 31402 |
| This theorem is referenced by: dfch2 31556 ococin 31557 shlub 31563 pjhtheu2 31565 shjshseli 31642 chsscon1 31650 chpsscon1 31653 chpsscon2 31654 chdmm2 31675 chdmm3 31676 chdmm4 31677 chdmj1 31678 chdmj2 31679 chdmj3 31680 chdmj4 31681 fh2 31768 hstle 32379 hstoh 32381 mddmd 32450 |
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