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| Mirrors > Home > HSE Home > Th. List > axpjcl | Structured version Visualization version GIF version | ||
| Description: Closure of a projection in its subspace. If we consider this together with axpjpj 31440 to be axioms, the need for the ax-hcompl 31222 can often be avoided for the kinds of theorems we are interested in here. An interesting project is to see how far we can go by using them in place of it. In particular, we can prove the orthomodular law pjomli 31455.) (Contributed by NM, 23-Oct-1999.) (Revised by Mario Carneiro, 15-May-2014.) (New usage is discouraged.) | 
| Ref | Expression | 
|---|---|
| axpjcl | ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ((projℎ‘𝐻)‘𝐴) ∈ 𝐻) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | eqid 2736 | . . 3 ⊢ ((projℎ‘𝐻)‘𝐴) = ((projℎ‘𝐻)‘𝐴) | |
| 2 | pjeq 31419 | . . 3 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → (((projℎ‘𝐻)‘𝐴) = ((projℎ‘𝐻)‘𝐴) ↔ (((projℎ‘𝐻)‘𝐴) ∈ 𝐻 ∧ ∃𝑥 ∈ (⊥‘𝐻)𝐴 = (((projℎ‘𝐻)‘𝐴) +ℎ 𝑥)))) | |
| 3 | 1, 2 | mpbii 233 | . 2 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → (((projℎ‘𝐻)‘𝐴) ∈ 𝐻 ∧ ∃𝑥 ∈ (⊥‘𝐻)𝐴 = (((projℎ‘𝐻)‘𝐴) +ℎ 𝑥))) | 
| 4 | 3 | simpld 494 | 1 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ((projℎ‘𝐻)‘𝐴) ∈ 𝐻) | 
| Colors of variables: wff setvar class | 
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2107 ∃wrex 3069 ‘cfv 6560 (class class class)co 7432 ℋchba 30939 +ℎ cva 30940 Cℋ cch 30949 ⊥cort 30950 projℎcpjh 30957 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-rep 5278 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 ax-inf2 9682 ax-cc 10476 ax-cnex 11212 ax-resscn 11213 ax-1cn 11214 ax-icn 11215 ax-addcl 11216 ax-addrcl 11217 ax-mulcl 11218 ax-mulrcl 11219 ax-mulcom 11220 ax-addass 11221 ax-mulass 11222 ax-distr 11223 ax-i2m1 11224 ax-1ne0 11225 ax-1rid 11226 ax-rnegex 11227 ax-rrecex 11228 ax-cnre 11229 ax-pre-lttri 11230 ax-pre-lttrn 11231 ax-pre-ltadd 11232 ax-pre-mulgt0 11233 ax-pre-sup 11234 ax-addf 11235 ax-mulf 11236 ax-hilex 31019 ax-hfvadd 31020 ax-hvcom 31021 ax-hvass 31022 ax-hv0cl 31023 ax-hvaddid 31024 ax-hfvmul 31025 ax-hvmulid 31026 ax-hvmulass 31027 ax-hvdistr1 31028 ax-hvdistr2 31029 ax-hvmul0 31030 ax-hfi 31099 ax-his1 31102 ax-his2 31103 ax-his3 31104 ax-his4 31105 ax-hcompl 31222 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3379 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-pss 3970 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-int 4946 df-iun 4992 df-iin 4993 df-br 5143 df-opab 5205 df-mpt 5225 df-tr 5259 df-id 5577 df-eprel 5583 df-po 5591 df-so 5592 df-fr 5636 df-se 5637 df-we 5638 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-pred 6320 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-f1 6565 df-fo 6566 df-f1o 6567 df-fv 6568 df-isom 6569 df-riota 7389 df-ov 7435 df-oprab 7436 df-mpo 7437 df-om 7889 df-1st 8015 df-2nd 8016 df-frecs 8307 df-wrecs 8338 df-recs 8412 df-rdg 8451 df-1o 8507 df-2o 8508 df-oadd 8511 df-omul 8512 df-er 8746 df-map 8869 df-pm 8870 df-en 8987 df-dom 8988 df-sdom 8989 df-fin 8990 df-fi 9452 df-sup 9483 df-inf 9484 df-oi 9551 df-card 9980 df-acn 9983 df-pnf 11298 df-mnf 11299 df-xr 11300 df-ltxr 11301 df-le 11302 df-sub 11495 df-neg 11496 df-div 11922 df-nn 12268 df-2 12330 df-3 12331 df-4 12332 df-n0 12529 df-z 12616 df-uz 12880 df-q 12992 df-rp 13036 df-xneg 13155 df-xadd 13156 df-xmul 13157 df-ico 13394 df-icc 13395 df-fz 13549 df-fl 13833 df-seq 14044 df-exp 14104 df-cj 15139 df-re 15140 df-im 15141 df-sqrt 15275 df-abs 15276 df-clim 15525 df-rlim 15526 df-rest 17468 df-topgen 17489 df-psmet 21357 df-xmet 21358 df-met 21359 df-bl 21360 df-mopn 21361 df-fbas 21362 df-fg 21363 df-top 22901 df-topon 22918 df-bases 22954 df-cld 23028 df-ntr 23029 df-cls 23030 df-nei 23107 df-lm 23238 df-haus 23324 df-fil 23855 df-fm 23947 df-flim 23948 df-flf 23949 df-cfil 25290 df-cau 25291 df-cmet 25292 df-grpo 30513 df-gid 30514 df-ginv 30515 df-gdiv 30516 df-ablo 30565 df-vc 30579 df-nv 30612 df-va 30615 df-ba 30616 df-sm 30617 df-0v 30618 df-vs 30619 df-nmcv 30620 df-ims 30621 df-ssp 30742 df-ph 30833 df-cbn 30883 df-hnorm 30988 df-hba 30989 df-hvsub 30991 df-hlim 30992 df-hcau 30993 df-sh 31227 df-ch 31241 df-oc 31272 df-ch0 31273 df-shs 31328 df-pjh 31415 | 
| This theorem is referenced by: pjhcl 31421 pjcli 31437 pjpjhth 31445 pjoccl 31453 pjspansn 31597 pjorthi 31689 pjcompi 31692 | 
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