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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 31384 | . . . 4 ⊢ (𝐴 ∈ Cℋ → 𝐴 ∈ Sℋ ) | |
| 3 | 1, 2 | syl 17 | . . 3 ⊢ (𝜑 → 𝐴 ∈ Sℋ ) |
| 4 | chscl.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ Cℋ ) | |
| 5 | chsh 31384 | . . . 4 ⊢ (𝐵 ∈ Cℋ → 𝐵 ∈ Sℋ ) | |
| 6 | 4, 5 | syl 17 | . . 3 ⊢ (𝜑 → 𝐵 ∈ Sℋ ) |
| 7 | shscl 31478 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) ∈ Sℋ ) | |
| 8 | 3, 6, 7 | syl2anc 593 | . 2 ⊢ (𝜑 → (𝐴 +ℋ 𝐵) ∈ Sℋ ) |
| 9 | 1 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐴 ∈ Cℋ ) |
| 10 | 4 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐵 ∈ Cℋ ) |
| 11 | chscl.3 | . . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ (⊥‘𝐴)) | |
| 12 | 11 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝐵 ⊆ (⊥‘𝐴)) |
| 13 | simprl 780 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑓:ℕ⟶(𝐴 +ℋ 𝐵)) | |
| 14 | simprr 782 | . . . . 5 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑓 ⇝𝑣 𝑧) | |
| 15 | eqid 2761 | . . . . 5 ⊢ (𝑥 ∈ ℕ ↦ ((projℎ‘𝐴)‘(𝑓‘𝑥))) = (𝑥 ∈ ℕ ↦ ((projℎ‘𝐴)‘(𝑓‘𝑥))) | |
| 16 | eqid 2761 | . . . . 5 ⊢ (𝑥 ∈ ℕ ↦ ((projℎ‘𝐵)‘(𝑓‘𝑥))) = (𝑥 ∈ ℕ ↦ ((projℎ‘𝐵)‘(𝑓‘𝑥))) | |
| 17 | 9, 10, 12, 13, 14, 15, 16 | chscllem4 31800 | . . . 4 ⊢ ((𝜑 ∧ (𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧)) → 𝑧 ∈ (𝐴 +ℋ 𝐵)) |
| 18 | 17 | ex 416 | . . 3 ⊢ (𝜑 → ((𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧) → 𝑧 ∈ (𝐴 +ℋ 𝐵))) |
| 19 | 18 | alrimivv 1947 | . 2 ⊢ (𝜑 → ∀𝑓∀𝑧((𝑓:ℕ⟶(𝐴 +ℋ 𝐵) ∧ 𝑓 ⇝𝑣 𝑧) → 𝑧 ∈ (𝐴 +ℋ 𝐵))) |
| 20 | isch2 31383 | . 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 592 | 1 ⊢ (𝜑 → (𝐴 +ℋ 𝐵) ∈ Cℋ ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∀wal 1557 ∈ wcel 2141 ⊆ wss 3902 class class class wbr 5097 ↦ cmpt 5178 ⟶wf 6512 ‘cfv 6516 (class class class)co 7391 ℕcn 12204 ⇝𝑣 chli 31087 Sℋ csh 31088 Cℋ cch 31089 ⊥cort 31090 +ℋ cph 31091 projℎcpjh 31097 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5224 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7713 ax-cnex 11123 ax-resscn 11124 ax-1cn 11125 ax-icn 11126 ax-addcl 11127 ax-addrcl 11128 ax-mulcl 11129 ax-mulrcl 11130 ax-mulcom 11131 ax-addass 11132 ax-mulass 11133 ax-distr 11134 ax-i2m1 11135 ax-1ne0 11136 ax-1rid 11137 ax-rnegex 11138 ax-rrecex 11139 ax-cnre 11140 ax-pre-lttri 11141 ax-pre-lttrn 11142 ax-pre-ltadd 11143 ax-pre-mulgt0 11144 ax-pre-sup 11145 ax-addf 11146 ax-mulf 11147 ax-hilex 31159 ax-hfvadd 31160 ax-hvcom 31161 ax-hvass 31162 ax-hv0cl 31163 ax-hvaddid 31164 ax-hfvmul 31165 ax-hvmulid 31166 ax-hvmulass 31167 ax-hvdistr1 31168 ax-hvdistr2 31169 ax-hvmul0 31170 ax-hfi 31239 ax-his1 31242 ax-his2 31243 ax-his3 31244 ax-his4 31245 ax-hcompl 31362 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-tp 4584 df-op 4586 df-uni 4863 df-int 4903 df-iun 4948 df-iin 4949 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-se 5597 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6283 df-ord 6344 df-on 6345 df-lim 6346 df-suc 6347 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-isom 6525 df-riota 7348 df-ov 7394 df-oprab 7395 df-mpo 7396 df-of 7655 df-om 7842 df-1st 7965 df-2nd 7966 df-supp 8135 df-frecs 8256 df-wrecs 8287 df-recs 8336 df-rdg 8375 df-1o 8431 df-2o 8432 df-er 8672 df-map 8804 df-pm 8805 df-ixp 8874 df-en 8922 df-dom 8923 df-sdom 8924 df-fin 8925 df-fsupp 9302 df-fi 9351 df-sup 9382 df-inf 9383 df-oi 9452 df-card 9891 df-pnf 11212 df-mnf 11213 df-xr 11214 df-ltxr 11215 df-le 11216 df-sub 11410 df-neg 11411 df-div 11839 df-nn 12205 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 df-n0 12476 df-z 12563 df-dec 12683 df-uz 12834 df-q 12944 df-rp 12988 df-xneg 13108 df-xadd 13109 df-xmul 13110 df-icc 13350 df-fz 13507 df-fzo 13654 df-seq 14009 df-exp 14069 df-hash 14338 df-cj 15117 df-re 15118 df-im 15119 df-sqrt 15253 df-abs 15254 df-struct 17174 df-sets 17191 df-slot 17209 df-ndx 17221 df-base 17237 df-ress 17258 df-plusg 17290 df-mulr 17291 df-sca 17293 df-vsca 17294 df-ip 17295 df-tset 17296 df-ple 17297 df-ds 17299 df-hom 17301 df-cco 17302 df-rest 17442 df-topn 17443 df-0g 17461 df-gsum 17462 df-topgen 17463 df-pt 17464 df-prds 17467 df-xrs 17523 df-qtop 17528 df-imas 17529 df-xps 17531 df-mre 17605 df-mrc 17606 df-acs 17608 df-mgm 18665 df-sgrp 18744 df-mnd 18760 df-submnd 18809 df-mulg 19101 df-cntz 19348 df-cmn 19813 df-psmet 21404 df-xmet 21405 df-met 21406 df-bl 21407 df-mopn 21408 df-top 22942 df-topon 22959 df-topsp 22981 df-bases 22994 df-cn 23275 df-cnp 23276 df-lm 23277 df-haus 23363 df-tx 23610 df-hmeo 23803 df-xms 24368 df-tms 24370 df-cau 25306 df-grpo 30653 df-gid 30654 df-ginv 30655 df-gdiv 30656 df-ablo 30705 df-vc 30719 df-nv 30752 df-va 30755 df-ba 30756 df-sm 30757 df-0v 30758 df-vs 30759 df-nmcv 30760 df-ims 30761 df-hnorm 31128 df-hba 31129 df-hvsub 31131 df-hlim 31132 df-hcau 31133 df-sh 31367 df-ch 31381 df-oc 31412 df-ch0 31413 df-shs 31468 df-pjh 31555 |
| This theorem is referenced by: osumi 31802 |
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