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| Mirrors > Home > HSE Home > Th. List > ocin | Structured version Visualization version GIF version | ||
| Description: Intersection of a Hilbert subspace and its complement. Part of Proposition 1 of [Kalmbach] p. 65. (Contributed by NM, 11-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ocin | ⊢ (𝐴 ∈ Sℋ → (𝐴 ∩ (⊥‘𝐴)) = 0ℋ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shocel 31211 | . . . . . . 7 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ (⊥‘𝐴) ↔ (𝑥 ∈ ℋ ∧ ∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0))) | |
| 2 | oveq2 7395 | . . . . . . . . . 10 ⊢ (𝑦 = 𝑥 → (𝑥 ·ih 𝑦) = (𝑥 ·ih 𝑥)) | |
| 3 | 2 | eqeq1d 2731 | . . . . . . . . 9 ⊢ (𝑦 = 𝑥 → ((𝑥 ·ih 𝑦) = 0 ↔ (𝑥 ·ih 𝑥) = 0)) |
| 4 | 3 | rspccv 3585 | . . . . . . . 8 ⊢ (∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0 → (𝑥 ∈ 𝐴 → (𝑥 ·ih 𝑥) = 0)) |
| 5 | his6 31028 | . . . . . . . . 9 ⊢ (𝑥 ∈ ℋ → ((𝑥 ·ih 𝑥) = 0 ↔ 𝑥 = 0ℎ)) | |
| 6 | 5 | biimpd 229 | . . . . . . . 8 ⊢ (𝑥 ∈ ℋ → ((𝑥 ·ih 𝑥) = 0 → 𝑥 = 0ℎ)) |
| 7 | 4, 6 | sylan9r 508 | . . . . . . 7 ⊢ ((𝑥 ∈ ℋ ∧ ∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0) → (𝑥 ∈ 𝐴 → 𝑥 = 0ℎ)) |
| 8 | 1, 7 | biimtrdi 253 | . . . . . 6 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ (⊥‘𝐴) → (𝑥 ∈ 𝐴 → 𝑥 = 0ℎ))) |
| 9 | 8 | com23 86 | . . . . 5 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ 𝐴 → (𝑥 ∈ (⊥‘𝐴) → 𝑥 = 0ℎ))) |
| 10 | 9 | impd 410 | . . . 4 ⊢ (𝐴 ∈ Sℋ → ((𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴)) → 𝑥 = 0ℎ)) |
| 11 | sh0 31145 | . . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴) | |
| 12 | oc0 31219 | . . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ (⊥‘𝐴)) | |
| 13 | 11, 12 | jca 511 | . . . . 5 ⊢ (𝐴 ∈ Sℋ → (0ℎ ∈ 𝐴 ∧ 0ℎ ∈ (⊥‘𝐴))) |
| 14 | eleq1 2816 | . . . . . 6 ⊢ (𝑥 = 0ℎ → (𝑥 ∈ 𝐴 ↔ 0ℎ ∈ 𝐴)) | |
| 15 | eleq1 2816 | . . . . . 6 ⊢ (𝑥 = 0ℎ → (𝑥 ∈ (⊥‘𝐴) ↔ 0ℎ ∈ (⊥‘𝐴))) | |
| 16 | 14, 15 | anbi12d 632 | . . . . 5 ⊢ (𝑥 = 0ℎ → ((𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴)) ↔ (0ℎ ∈ 𝐴 ∧ 0ℎ ∈ (⊥‘𝐴)))) |
| 17 | 13, 16 | syl5ibrcom 247 | . . . 4 ⊢ (𝐴 ∈ Sℋ → (𝑥 = 0ℎ → (𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴)))) |
| 18 | 10, 17 | impbid 212 | . . 3 ⊢ (𝐴 ∈ Sℋ → ((𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴)) ↔ 𝑥 = 0ℎ)) |
| 19 | elin 3930 | . . 3 ⊢ (𝑥 ∈ (𝐴 ∩ (⊥‘𝐴)) ↔ (𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴))) | |
| 20 | elch0 31183 | . . 3 ⊢ (𝑥 ∈ 0ℋ ↔ 𝑥 = 0ℎ) | |
| 21 | 18, 19, 20 | 3bitr4g 314 | . 2 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ (𝐴 ∩ (⊥‘𝐴)) ↔ 𝑥 ∈ 0ℋ)) |
| 22 | 21 | eqrdv 2727 | 1 ⊢ (𝐴 ∈ Sℋ → (𝐴 ∩ (⊥‘𝐴)) = 0ℋ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∀wral 3044 ∩ cin 3913 ‘cfv 6511 (class class class)co 7387 0cc0 11068 ℋchba 30848 ·ih csp 30851 0ℎc0v 30853 Sℋ csh 30857 ⊥cort 30859 0ℋc0h 30864 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-hilex 30928 ax-hfvadd 30929 ax-hv0cl 30932 ax-hfvmul 30934 ax-hvmul0 30939 ax-hfi 31008 ax-his2 31012 ax-his3 31013 ax-his4 31014 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-id 5533 df-po 5546 df-so 5547 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-ltxr 11213 df-sh 31136 df-oc 31181 df-ch0 31182 |
| This theorem is referenced by: ocnel 31227 chocunii 31230 pjhtheu 31323 pjpreeq 31327 omlsi 31333 ococi 31334 pjoc1i 31360 orthin 31375 ssjo 31376 chocini 31383 chscllem3 31568 |
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