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| Mirrors > Home > HSE Home > Th. List > chscl | Structured version Visualization version GIF version | ||
| Description: The subspace sum of two closed orthogonal spaces is closed. (Contributed by NM, 19-Oct-1999.) (Proof shortened by Mario Carneiro, 19-May-2014.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| chscl.1 | ⊢ (𝜑 → 𝐴 ∈ Cℋ ) |
| chscl.2 | ⊢ (𝜑 → 𝐵 ∈ Cℋ ) |
| chscl.3 | ⊢ (𝜑 → 𝐵 ⊆ (⊥‘𝐴)) |
| Ref | Expression |
|---|---|
| chscl | ⊢ (𝜑 → (𝐴 +ℋ 𝐵) ∈ Cℋ ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | chscl.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ Cℋ ) | |
| 2 | chsh 31623 | . . . 4 ⊢ (𝐴 ∈ Cℋ → 𝐴 ∈ Sℋ ) | |
| 3 | 1, 2 | syl 18 | . . 3 ⊢ (𝜑 → 𝐴 ∈ Sℋ ) |
| 4 | chscl.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ Cℋ ) | |
| 5 | chsh 31623 | . . . 4 ⊢ (𝐵 ∈ Cℋ → 𝐵 ∈ Sℋ ) | |
| 6 | 4, 5 | syl 18 | . . 3 ⊢ (𝜑 → 𝐵 ∈ Sℋ ) |
| 7 | shscl 31717 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) ∈ Sℋ ) | |
| 8 | 3, 6, 7 | syl2anc 596 | . 2 ⊢ (𝜑 → (𝐴 +ℋ 𝐵) ∈ Sℋ ) |
| 9 | 1 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐴 ∈ Cℋ ) |
| 10 | 4 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐵 ∈ Cℋ ) |
| 11 | chscl.3 | . . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ (⊥‘𝐴)) | |
| 12 | 11 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐵 ⊆ (⊥‘𝐴)) |
| 13 | simprl 783 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑓:ℕ⟶(𝐴 +ℋ 𝐵)) | |
| 14 | simprr 785 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑓 ⇝𝑣 𝑧) | |
| 15 | eqid 2765 | . . . . 5 ⊢ (𝑥 ∈ ℕ ↦ ((projℎ‘𝐴)‘(𝑓‘𝑥))) = (𝑥 ∈ ℕ ↦ ((projℎ‘𝐴)‘(𝑓‘𝑥))) | |
| 16 | eqid 2765 | . . . . 5 ⊢ (𝑥 ∈ ℕ ↦ ((projℎ‘𝐵)‘(𝑓‘𝑥))) = (𝑥 ∈ ℕ ↦ ((projℎ‘𝐵)‘(𝑓‘𝑥))) | |
| 17 | 9, 10, 12, 13, 14, 15, 16 | chscllem4 32039 | . . . 4 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑧 ∈ (𝐴 +ℋ 𝐵)) |
| 18 | 17 | ex 418 | . . 3 ⊢ (𝜑 → ((𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧) → 𝑧 ∈ (𝐴 +ℋ 𝐵))) |
| 19 | 18 | alrimivv 1961 | . 2 ⊢ (𝜑 → ∀𝑓∀𝑧((𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧) → 𝑧 ∈ (𝐴 +ℋ 𝐵))) |
| 20 | isch2 31622 | . 2 ⊢ ((𝐴 +ℋ 𝐵) ∈ Cℋ ↔ ((𝐴 +ℋ 𝐵) ∈ Sℋ ∧ ∀𝑓∀𝑧((𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧) → 𝑧 ∈ (𝐴 +ℋ 𝐵)))) | |
| 21 | 8, 19, 20 | sylanbrc 595 | 1 ⊢ (𝜑 → (𝐴 +ℋ 𝐵) ∈ Cℋ ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∀wal 1568 ∈ wcel 2146 ⊆ wss 3906 class class class wbr 5111 ↦ cmpt 5194 ⟶wf 6536 ‘cfv 6540 (class class class)co 7416 ℕcn 12244 ⇝𝑣 chli 31326 Sℋ csh 31327 Cℋ cch 31328 ⊥cort 31329 +ℋ cph 31330 projℎcpjh 31336 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-cnex 11167 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 ax-pre-mulgt0 11188 ax-pre-sup 11189 ax-addf 11190 ax-mulf 11191 ax-hilex 31398 ax-hfvadd 31399 ax-hvcom 31400 ax-hvass 31401 ax-hv0cl 31402 ax-hvaddid 31403 ax-hfvmul 31404 ax-hvmulid 31405 ax-hvmulass 31406 ax-hvdistr1 31407 ax-hvdistr2 31408 ax-hvmul0 31409 ax-hfi 31478 ax-his1 31481 ax-his2 31482 ax-his3 31483 ax-his4 31484 ax-hcompl 31601 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-iin 4961 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-se 5617 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-of 7680 df-om 7865 df-1st 7988 df-2nd 7989 df-supp 8159 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-2o 8456 df-er 8696 df-map 8828 df-pm 8829 df-ixp 8898 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-fsupp 9325 df-fi 9374 df-sup 9405 df-inf 9406 df-oi 9475 df-card 9937 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11454 df-neg 11455 df-div 11883 df-nn 12245 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 df-7 12319 df-8 12320 df-9 12321 df-n0 12516 df-z 12603 df-dec 12724 df-uz 12875 df-q 12985 df-rp 13029 df-xneg 13149 df-xadd 13150 df-xmul 13151 df-icc 13391 df-fz 13548 df-fzo 13696 df-seq 14052 df-exp 14112 df-hash 14381 df-cj 15170 df-re 15171 df-im 15172 df-sqrt 15306 df-abs 15307 df-struct 17225 df-sets 17242 df-slot 17260 df-ndx 17272 df-base 17288 df-ress 17309 df-plusg 17341 df-mulr 17342 df-sca 17344 df-vsca 17345 df-ip 17346 df-tset 17347 df-ple 17348 df-ds 17350 df-hom 17352 df-cco 17353 df-rest 17493 df-topn 17494 df-0g 17512 df-gsum 17513 df-topgen 17514 df-pt 17515 df-prds 17518 df-xrs 17574 df-qtop 17579 df-imas 17580 df-xps 17582 df-mre 17656 df-mrc 17657 df-acs 17659 df-mgm 18716 df-sgrp 18799 df-mnd 18815 df-submnd 18866 df-mulg 19158 df-cntz 19411 df-cmn 19876 df-psmet 21544 df-xmet 21545 df-met 21546 df-bl 21547 df-mopn 21548 df-top 23081 df-topon 23098 df-topsp 23120 df-bases 23133 df-cn 23414 df-cnp 23415 df-lm 23416 df-haus 23502 df-tx 23750 df-hmeo 23943 df-xms 24508 df-tms 24510 df-cau 25446 df-grpo 30892 df-gid 30893 df-ginv 30894 df-gdiv 30895 df-ablo 30944 df-vc 30958 df-nv 30991 df-va 30994 df-ba 30995 df-sm 30996 df-0v 30997 df-vs 30998 df-nmcv 30999 df-ims 31000 df-hnorm 31367 df-hba 31368 df-hvsub 31370 df-hlim 31371 df-hcau 31372 df-sh 31606 df-ch 31620 df-oc 31651 df-ch0 31652 df-shs 31707 df-pjh 31794 |
| This theorem is used by: osumi 32041 |
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