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| Mirrors > Home > HSE Home > Th. List > pjhtheu | Structured version Visualization version GIF version | ||
| Description: Projection Theorem: Any Hilbert space vector 𝐴 can be decomposed uniquely into a member 𝑥 of a closed subspace 𝐻 and a member 𝑦 of the complement of the subspace. Theorem 3.7(i) of [Beran] p. 102. See pjhtheu2 31506 for the uniqueness of 𝑦. (Contributed by NM, 23-Oct-1999.) (Revised by Mario Carneiro, 14-May-2014.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| pjhtheu | ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ∃!𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pjhth 31483 | . . . . 5 ⊢ (𝐻 ∈ Cℋ → (𝐻 +ℋ (⊥‘𝐻)) = ℋ) | |
| 2 | 1 | eleq2d 2823 | . . . 4 ⊢ (𝐻 ∈ Cℋ → (𝐴 ∈ (𝐻 +ℋ (⊥‘𝐻)) ↔ 𝐴 ∈ ℋ)) |
| 3 | chsh 31314 | . . . . 5 ⊢ (𝐻 ∈ Cℋ → 𝐻 ∈ Sℋ ) | |
| 4 | shocsh 31374 | . . . . 5 ⊢ (𝐻 ∈ Sℋ → (⊥‘𝐻) ∈ Sℋ ) | |
| 5 | shsel 31404 | . . . . 5 ⊢ ((𝐻 ∈ Sℋ ∧ (⊥‘𝐻) ∈ Sℋ ) → (𝐴 ∈ (𝐻 +ℋ (⊥‘𝐻)) ↔ ∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) | |
| 6 | 3, 4, 5 | syl2anc2 586 | . . . 4 ⊢ (𝐻 ∈ Cℋ → (𝐴 ∈ (𝐻 +ℋ (⊥‘𝐻)) ↔ ∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) |
| 7 | 2, 6 | bitr3d 281 | . . 3 ⊢ (𝐻 ∈ Cℋ → (𝐴 ∈ ℋ ↔ ∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) |
| 8 | 7 | biimpa 476 | . 2 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)) |
| 9 | 3, 4 | syl 17 | . . . 4 ⊢ (𝐻 ∈ Cℋ → (⊥‘𝐻) ∈ Sℋ ) |
| 10 | ocin 31386 | . . . . 5 ⊢ (𝐻 ∈ Sℋ → (𝐻 ∩ (⊥‘𝐻)) = 0ℋ) | |
| 11 | 3, 10 | syl 17 | . . . 4 ⊢ (𝐻 ∈ Cℋ → (𝐻 ∩ (⊥‘𝐻)) = 0ℋ) |
| 12 | pjhthmo 31392 | . . . 4 ⊢ ((𝐻 ∈ Sℋ ∧ (⊥‘𝐻) ∈ Sℋ ∧ (𝐻 ∩ (⊥‘𝐻)) = 0ℋ) → ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) | |
| 13 | 3, 9, 11, 12 | syl3anc 1374 | . . 3 ⊢ (𝐻 ∈ Cℋ → ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) |
| 14 | 13 | adantr 480 | . 2 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) |
| 15 | reu5 3345 | . . 3 ⊢ (∃!𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ↔ (∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ∧ ∃*𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) | |
| 16 | df-rmo 3343 | . . . 4 ⊢ (∃*𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ↔ ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦))) | |
| 17 | 16 | anbi2i 624 | . . 3 ⊢ ((∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ∧ ∃*𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)) ↔ (∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ∧ ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)))) |
| 18 | 15, 17 | bitri 275 | . 2 ⊢ (∃!𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ↔ (∃𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦) ∧ ∃*𝑥(𝑥 ∈ 𝐻 ∧ ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)))) |
| 19 | 8, 14, 18 | sylanbrc 584 | 1 ⊢ ((𝐻 ∈ Cℋ ∧ 𝐴 ∈ ℋ) → ∃!𝑥 ∈ 𝐻 ∃𝑦 ∈ (⊥‘𝐻)𝐴 = (𝑥 +ℎ 𝑦)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∃*wmo 2538 ∃wrex 3062 ∃!wreu 3341 ∃*wrmo 3342 ∩ cin 3889 ‘cfv 6494 (class class class)co 7362 ℋchba 31009 +ℎ cva 31010 Sℋ csh 31018 Cℋ cch 31019 ⊥cort 31020 +ℋ cph 31021 0ℋc0h 31025 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5304 ax-pr 5372 ax-un 7684 ax-inf2 9557 ax-cc 10352 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 ax-pre-sup 11111 ax-addf 11112 ax-mulf 11113 ax-hilex 31089 ax-hfvadd 31090 ax-hvcom 31091 ax-hvass 31092 ax-hv0cl 31093 ax-hvaddid 31094 ax-hfvmul 31095 ax-hvmulid 31096 ax-hvmulass 31097 ax-hvdistr1 31098 ax-hvdistr2 31099 ax-hvmul0 31100 ax-hfi 31169 ax-his1 31172 ax-his2 31173 ax-his3 31174 ax-his4 31175 ax-hcompl 31292 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-iin 4937 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5521 df-eprel 5526 df-po 5534 df-so 5535 df-fr 5579 df-se 5580 df-we 5581 df-xp 5632 df-rel 5633 df-cnv 5634 df-co 5635 df-dm 5636 df-rn 5637 df-res 5638 df-ima 5639 df-pred 6261 df-ord 6322 df-on 6323 df-lim 6324 df-suc 6325 df-iota 6450 df-fun 6496 df-fn 6497 df-f 6498 df-f1 6499 df-fo 6500 df-f1o 6501 df-fv 6502 df-isom 6503 df-riota 7319 df-ov 7365 df-oprab 7366 df-mpo 7367 df-om 7813 df-1st 7937 df-2nd 7938 df-frecs 8226 df-wrecs 8257 df-recs 8306 df-rdg 8344 df-1o 8400 df-2o 8401 df-oadd 8404 df-omul 8405 df-er 8638 df-map 8770 df-pm 8771 df-en 8889 df-dom 8890 df-sdom 8891 df-fin 8892 df-fi 9319 df-sup 9350 df-inf 9351 df-oi 9420 df-card 9858 df-acn 9861 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-div 11803 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-n0 12433 df-z 12520 df-uz 12784 df-q 12894 df-rp 12938 df-xneg 13058 df-xadd 13059 df-xmul 13060 df-ico 13299 df-icc 13300 df-fz 13457 df-fl 13746 df-seq 13959 df-exp 14019 df-cj 15056 df-re 15057 df-im 15058 df-sqrt 15192 df-abs 15193 df-clim 15445 df-rlim 15446 df-rest 17380 df-topgen 17401 df-psmet 21340 df-xmet 21341 df-met 21342 df-bl 21343 df-mopn 21344 df-fbas 21345 df-fg 21346 df-top 22873 df-topon 22890 df-bases 22925 df-cld 22998 df-ntr 22999 df-cls 23000 df-nei 23077 df-lm 23208 df-haus 23294 df-fil 23825 df-fm 23917 df-flim 23918 df-flf 23919 df-cfil 25236 df-cau 25237 df-cmet 25238 df-grpo 30583 df-gid 30584 df-ginv 30585 df-gdiv 30586 df-ablo 30635 df-vc 30649 df-nv 30682 df-va 30685 df-ba 30686 df-sm 30687 df-0v 30688 df-vs 30689 df-nmcv 30690 df-ims 30691 df-ssp 30812 df-ph 30903 df-cbn 30953 df-hnorm 31058 df-hba 31059 df-hvsub 31061 df-hlim 31062 df-hcau 31063 df-sh 31297 df-ch 31311 df-oc 31342 df-ch0 31343 df-shs 31398 |
| This theorem is referenced by: pjhtheu2 31506 |
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