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| Mirrors > Home > HSE Home > Th. List > shsubcl | Structured version Visualization version GIF version | ||
| Description: Closure of vector subtraction in a subspace of a Hilbert space. (Contributed by NM, 18-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shsubcl | ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 −ℎ 𝐵) ∈ 𝐻) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shss 31827 | . . . . . 6 ⊢ (𝐻 ∈ Sℋ → 𝐻 ⊆ ℋ) | |
| 2 | 1 | sseld 3912 | . . . . 5 ⊢ (𝐻 ∈ Sℋ → (𝐴 ∈ 𝐻 → 𝐴 ∈ ℋ)) |
| 3 | 1 | sseld 3912 | . . . . 5 ⊢ (𝐻 ∈ Sℋ → (𝐵 ∈ 𝐻 → 𝐵 ∈ ℋ)) |
| 4 | 2, 3 | anim12d 621 | . . . 4 ⊢ (𝐻 ∈ Sℋ → ((𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ))) |
| 5 | 4 | 3impib 1134 | . . 3 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ)) |
| 6 | hvsubval 31633 | . . 3 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 −ℎ 𝐵) = (𝐴 +ℎ ( -1 ·ℎ 𝐵))) | |
| 7 | 5, 6 | syl 18 | . 2 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 −ℎ 𝐵) = (𝐴 +ℎ ( -1 ·ℎ 𝐵))) |
| 8 | neg1cn 12318 | . . . . 5 ⊢ -1 ∈ ℂ | |
| 9 | shmulcl 31835 | . . . . 5 ⊢ ((𝐻 ∈ Sℋ ∧ -1 ∈ ℂ ∧ 𝐵 ∈ 𝐻) → ( -1 ·ℎ 𝐵) ∈ 𝐻) | |
| 10 | 8, 9 | mp3an2 1478 | . . . 4 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐵 ∈ 𝐻) → ( -1 ·ℎ 𝐵) ∈ 𝐻) |
| 11 | 10 | 3adant2 1149 | . . 3 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → ( -1 ·ℎ 𝐵) ∈ 𝐻) |
| 12 | shaddcl 31834 | . . 3 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ ( -1 ·ℎ 𝐵) ∈ 𝐻) → (𝐴 +ℎ ( -1 ·ℎ 𝐵)) ∈ 𝐻) | |
| 13 | 11, 12 | syld3an3 1436 | . 2 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 +ℎ ( -1 ·ℎ 𝐵)) ∈ 𝐻) |
| 14 | 7, 13 | eqeltrd 2864 | 1 ⊢ ((𝐻 ∈ Sℋ ∧ 𝐴 ∈ 𝐻 ∧ 𝐵 ∈ 𝐻) → (𝐴 −ℎ 𝐵) ∈ 𝐻) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2146 (class class class)co 7430 ℂcc 11211 1c1 11214 -cneg 11555 ℋchba 31536 +ℎ cva 31537 ·ℎ csm 31538 −ℎ cmv 31542 Sℋ csh 31545 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7761 ax-resscn 11270 ax-1cn 11271 ax-icn 11272 ax-addcl 11273 ax-addrcl 11274 ax-mulcl 11275 ax-mulrcl 11276 ax-mulcom 11277 ax-addass 11278 ax-mulass 11279 ax-distr 11280 ax-i2m1 11281 ax-1ne0 11282 ax-1rid 11283 ax-rnegex 11284 ax-rrecex 11285 ax-cnre 11286 ax-pre-lttri 11287 ax-pre-lttrn 11288 ax-pre-ltadd 11289 ax-hilex 31616 ax-hfvadd 31617 ax-hfvmul 31622 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6501 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-riota 7387 df-ov 7433 df-oprab 7434 df-mpo 7435 df-er 8731 df-en 8988 df-dom 8989 df-sdom 8990 df-pnf 11358 df-mnf 11359 df-ltxr 11361 df-sub 11556 df-neg 11557 df-hvsub 31588 df-sh 31824 |
| This theorem is used by: hhssmetdval 31894 shuni 31917 shsvs 31940 omlsilem 32019 pjoc1i 32048 chscllem2 32255 sumspansn 32266 spansncvi 32269 pjss2i 32297 pjssmii 32298 pjocini 32315 sumdmdii 33032 cdjreui 33049 |
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