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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 31353 | . . . . . . 7 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ (⊥‘𝐴) ↔ (𝑥 ∈ ℋ ∧ ∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0))) | |
| 2 | oveq2 7375 | . . . . . . . . . 10 ⊢ (𝑦 = 𝑥 → (𝑥 ·ih 𝑦) = (𝑥 ·ih 𝑥)) | |
| 3 | 2 | eqeq1d 2738 | . . . . . . . . 9 ⊢ (𝑦 = 𝑥 → ((𝑥 ·ih 𝑦) = 0 ↔ (𝑥 ·ih 𝑥) = 0)) |
| 4 | 3 | rspccv 3561 | . . . . . . . 8 ⊢ (∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0 → (𝑥 ∈ 𝐴 → (𝑥 ·ih 𝑥) = 0)) |
| 5 | his6 31170 | . . . . . . . . 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 31287 | . . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴) | |
| 12 | oc0 31361 | . . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ (⊥‘𝐴)) | |
| 13 | 11, 12 | jca 511 | . . . . 5 ⊢ (𝐴 ∈ Sℋ → (0ℎ ∈ 𝐴 ∧ 0ℎ ∈ (⊥‘𝐴))) |
| 14 | eleq1 2824 | . . . . . 6 ⊢ (𝑥 = 0ℎ → (𝑥 ∈ 𝐴 ↔ 0ℎ ∈ 𝐴)) | |
| 15 | eleq1 2824 | . . . . . 6 ⊢ (𝑥 = 0ℎ → (𝑥 ∈ (⊥‘𝐴) ↔ 0ℎ ∈ (⊥‘𝐴))) | |
| 16 | 14, 15 | anbi12d 633 | . . . . 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 3905 | . . 3 ⊢ (𝑥 ∈ (𝐴 ∩ (⊥‘𝐴)) ↔ (𝑥 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴))) | |
| 20 | elch0 31325 | . . 3 ⊢ (𝑥 ∈ 0ℋ ↔ 𝑥 = 0ℎ) | |
| 21 | 18, 19, 20 | 3bitr4g 314 | . 2 ⊢ (𝐴 ∈ Sℋ → (𝑥 ∈ (𝐴 ∩ (⊥‘𝐴)) ↔ 𝑥 ∈ 0ℋ)) |
| 22 | 21 | eqrdv 2734 | 1 ⊢ (𝐴 ∈ Sℋ → (𝐴 ∩ (⊥‘𝐴)) = 0ℋ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∀wral 3051 ∩ cin 3888 ‘cfv 6498 (class class class)co 7367 0cc0 11038 ℋchba 30990 ·ih csp 30993 0ℎc0v 30995 Sℋ csh 30999 ⊥cort 31001 0ℋc0h 31006 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-hilex 31070 ax-hfvadd 31071 ax-hv0cl 31074 ax-hfvmul 31076 ax-hvmul0 31081 ax-hfi 31150 ax-his2 31154 ax-his3 31155 ax-his4 31156 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-ov 7370 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-ltxr 11184 df-sh 31278 df-oc 31323 df-ch0 31324 |
| This theorem is referenced by: ocnel 31369 chocunii 31372 pjhtheu 31465 pjpreeq 31469 omlsi 31475 ococi 31476 pjoc1i 31502 orthin 31517 ssjo 31518 chocini 31525 chscllem3 31710 |
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