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| Mirrors > Home > HSE Home > Th. List > pjch1 | Structured version Visualization version GIF version | ||
| Description: Property of identity projection. Remark in [Beran] p. 111. (Contributed by NM, 28-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| pjch1 | ⊢ (𝐴 ∈ ℋ → ((projℎ‘ ℋ)‘𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleq1 2853 | . . . 4 ⊢ (𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ) → (𝐴 ∈ ℋ ↔ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ)) | |
| 2 | fveq2 6871 | . . . . 5 ⊢ (𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ) → ((projℎ‘ ℋ)‘𝐴) = ((projℎ‘ ℋ)‘if(𝐴 ∈ ℋ, 𝐴, 0ℎ))) | |
| 3 | id 23 | . . . . 5 ⊢ (𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ) → 𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ)) | |
| 4 | 2, 3 | eqeq12d 2781 | . . . 4 ⊢ (𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ) → (((projℎ‘ ℋ)‘𝐴) = 𝐴 ↔ ((projℎ‘ ℋ)‘if(𝐴 ∈ ℋ, 𝐴, 0ℎ)) = if(𝐴 ∈ ℋ, 𝐴, 0ℎ))) |
| 5 | 1, 4 | bibi12d 348 | . . 3 ⊢ (𝐴 = if(𝐴 ∈ ℋ, 𝐴, 0ℎ) → ((𝐴 ∈ ℋ ↔ ((projℎ‘ ℋ)‘𝐴) = 𝐴) ↔ (if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ ↔ ((projℎ‘ ℋ)‘if(𝐴 ∈ ℋ, 𝐴, 0ℎ)) = if(𝐴 ∈ ℋ, 𝐴, 0ℎ)))) |
| 6 | helch 31500 | . . . 4 ⊢ ℋ ∈ Cℋ | |
| 7 | ifhvhv0 31279 | . . . 4 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ | |
| 8 | 6, 7 | pjchi 31689 | . . 3 ⊢ (if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ ↔ ((projℎ‘ ℋ)‘if(𝐴 ∈ ℋ, 𝐴, 0ℎ)) = if(𝐴 ∈ ℋ, 𝐴, 0ℎ)) |
| 9 | 5, 8 | dedth 4542 | . 2 ⊢ (𝐴 ∈ ℋ → (𝐴 ∈ ℋ ↔ ((projℎ‘ ℋ)‘𝐴) = 𝐴)) |
| 10 | 9 | ibi 270 | 1 ⊢ (𝐴 ∈ ℋ → ((projℎ‘ ℋ)‘𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1563 ∈ wcel 2145 ifcif 4483 ‘cfv 6525 ℋchba 31176 0ℎc0v 31181 projℎcpjh 31194 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-rep 5231 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-inf2 9598 ax-cc 10407 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 ax-pre-sup 11166 ax-addf 11167 ax-mulf 11168 ax-hilex 31256 ax-hfvadd 31257 ax-hvcom 31258 ax-hvass 31259 ax-hv0cl 31260 ax-hvaddid 31261 ax-hfvmul 31262 ax-hvmulid 31263 ax-hvmulass 31264 ax-hvdistr1 31265 ax-hvdistr2 31266 ax-hvmul0 31267 ax-hfi 31336 ax-his1 31339 ax-his2 31340 ax-his3 31341 ax-his4 31342 ax-hcompl 31459 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4868 df-int 4908 df-iun 4953 df-iin 4954 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-isom 6534 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-of 7664 df-om 7851 df-1st 7974 df-2nd 7975 df-supp 8145 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-1o 8441 df-2o 8442 df-oadd 8445 df-omul 8446 df-er 8682 df-map 8814 df-pm 8815 df-ixp 8884 df-en 8932 df-dom 8933 df-sdom 8934 df-fin 8935 df-fsupp 9310 df-fi 9359 df-sup 9390 df-inf 9391 df-oi 9460 df-card 9913 df-acn 9916 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12222 df-2 12291 df-3 12292 df-4 12293 df-5 12294 df-6 12295 df-7 12296 df-8 12297 df-9 12298 df-n0 12493 df-z 12580 df-dec 12700 df-uz 12851 df-q 12961 df-rp 13005 df-xneg 13125 df-xadd 13126 df-xmul 13127 df-ioo 13364 df-ico 13366 df-icc 13367 df-fz 13524 df-fzo 13671 df-fl 13813 df-seq 14026 df-exp 14086 df-hash 14355 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-clim 15527 df-rlim 15528 df-sum 15726 df-struct 17195 df-sets 17212 df-slot 17230 df-ndx 17242 df-base 17258 df-ress 17279 df-plusg 17311 df-mulr 17312 df-starv 17313 df-sca 17314 df-vsca 17315 df-ip 17316 df-tset 17317 df-ple 17318 df-ds 17320 df-unif 17321 df-hom 17322 df-cco 17323 df-rest 17463 df-topn 17464 df-0g 17482 df-gsum 17483 df-topgen 17484 df-pt 17485 df-prds 17488 df-xrs 17544 df-qtop 17549 df-imas 17550 df-xps 17552 df-mre 17626 df-mrc 17627 df-acs 17629 df-mgm 18686 df-sgrp 18765 df-mnd 18781 df-submnd 18830 df-mulg 19122 df-cntz 19375 df-cmn 19840 df-psmet 21471 df-xmet 21472 df-met 21473 df-bl 21474 df-mopn 21475 df-fbas 21476 df-fg 21477 df-cnfld 21480 df-top 23008 df-topon 23025 df-topsp 23047 df-bases 23060 df-cld 23133 df-ntr 23134 df-cls 23135 df-nei 23212 df-cn 23341 df-cnp 23342 df-lm 23343 df-haus 23429 df-tx 23676 df-hmeo 23869 df-fil 23960 df-fm 24052 df-flim 24053 df-flf 24054 df-xms 24434 df-ms 24435 df-tms 24436 df-cfil 25371 df-cau 25372 df-cmet 25373 df-grpo 30750 df-gid 30751 df-ginv 30752 df-gdiv 30753 df-ablo 30802 df-vc 30816 df-nv 30849 df-va 30852 df-ba 30853 df-sm 30854 df-0v 30855 df-vs 30856 df-nmcv 30857 df-ims 30858 df-dip 30958 df-ssp 30979 df-ph 31070 df-cbn 31120 df-hnorm 31225 df-hba 31226 df-hvsub 31228 df-hlim 31229 df-hcau 31230 df-sh 31464 df-ch 31478 df-oc 31509 df-ch0 31510 df-shs 31565 df-pjh 31652 |
| This theorem is referenced by: pjo 31928 dfiop2 32010 hoival 32012 hoid1i 32046 hoid1ri 32047 pjtoi 32436 strlem3a 32509 hstrlem3a 32517 |
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