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| Description: Complement of complement of a closed subspace of Hilbert space. Theorem 3.7(ii) of [Beran] p. 102. |
| Ref | Expression |
|---|---|
| ococ |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 4681 |
. . . 4
| |
| 2 | 1 | fveq2d 4685 |
. . 3
|
| 3 | id 73 |
. . 3
| |
| 4 | 2, 3 | eqeq12d 1899 |
. 2
|
| 5 | helch 10749 |
. . . 4
| |
| 6 | 5 | elimel 3025 |
. . 3
|
| 7 | 6 | ococi 10880 |
. 2
|
| 8 | 4, 7 | dedth 3011 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dfch2 10882 ococin 10930 shjshseli 11049 chsscon1 11057 chsscon2 11058 chpsscon1 11060 chpsscon2 11061 chdmm2 11082 chdmm3 11083 chdmm4 11084 chdmj1 11085 chdmj2 11086 chdmj3 11087 chdmj4 11088 fh2 11195 osumi 11221 hstle 11802 hstoh 11804 mddmd 11873 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-rep 3428 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 ax-inf2 5731 ax-ac 5906 ax-hilex 10501 ax-hfvadd 10502 ax-hvcom 10503 ax-hvass 10504 ax-hv0cl 10505 ax-hvaddid 10506 ax-hfvmul 10507 ax-hvmulid 10508 ax-hvmulass 10509 ax-hvdistr1 10510 ax-hvdistr2 10511 ax-hvmul0 10512 ax-hfi 10579 ax-his1 10582 ax-his2 10583 ax-his3 10584 ax-his4 10585 ax-hcompl 10704 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3or 859 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-nel 2020 df-ral 2109 df-rex 2110 df-reu 2111 df-rab 2112 df-v 2294 df-sbc 2454 df-csb 2541 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-pss 2607 df-nul 2876 df-if 2983 df-pw 3035 df-sn 3049 df-pr 3050 df-tp 3052 df-op 3053 df-uni 3178 df-int 3215 df-iun 3257 df-br 3339 df-opab 3396 df-tr 3412 df-eprel 3583 df-id 3586 df-po 3591 df-so 3604 df-fr 3625 df-we 3644 df-ord 3660 df-on 3661 df-lim 3662 df-suc 3663 df-om 3950 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-rn 4005 df-res 4006 df-ima 4007 df-fun 4008 df-fn 4009 df-f 4010 df-f1 4011 df-fo 4012 df-f1o 4013 df-fv 4014 df-opr 4886 df-oprab 4887 df-mpt 5006 df-1st 5020 df-2nd 5021 df-iota 5089 df-rdg 5140 df-1o 5177 df-oadd 5179 df-omul 5180 df-er 5318 df-ec 5320 df-qs 5323 df-en 5427 df-dom 5428 df-sdom 5429 df-undef 5556 df-riota 5560 df-sup 5664 df-ni 6152 df-pli 6153 df-mi 6154 df-lti 6155 df-plpq 6187 df-mpq 6188 df-enq 6189 df-nq 6190 df-plq 6191 df-mq 6192 df-rq 6193 df-ltq 6194 df-1q 6195 df-np 6238 df-1p 6239 df-plp 6240 df-mp 6241 df-ltp 6242 df-plpr 6316 df-mpr 6317 df-enr 6318 df-nr 6319 df-plr 6320 df-mr 6321 df-ltr 6322 df-0r 6323 df-1r 6324 df-m1r 6325 df-c 6392 df-0 6393 df-1 6394 df-i 6395 df-r 6396 df-plus 6397 df-mul 6398 df-lt 6399 df-sub 6511 df-neg 6513 df-pnf 6654 df-mnf 6655 df-xr 6656 df-ltxr 6657 df-le 6658 df-div 6892 df-n 7108 df-2 7154 df-3 7155 df-4 7156 df-n0 7309 df-z 7345 df-uz 7587 df-seq1 7721 df-exp 7812 df-sqr 7920 df-re 8001 df-im 8002 df-cj 8003 df-abs 8004 df-clim 8235 df-hnorm 10469 df-hvsub 10472 df-hlim 10473 df-hcau 10474 df-sh 10709 df-ch 10725 df-oc 10757 df-ch0 10758 |