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| Mirrors > Home > MPE Home > Th. List > cssmre | Structured version Visualization version GIF version | ||
| Description: The closed subspaces of a pre-Hilbert space are a Moore system. Unlike many of our other examples of closure systems, this one is not usually an algebraic closure system df-acs 17627: consider the Hilbert space of sequences ℕ⟶ℝ with convergent sum; the subspace of all sequences with finite support is the classic example of a non-closed subspace, but for every finite set of sequences of finite support, there is a finite-dimensional (and hence closed) subspace containing all of the sequences, so if closed subspaces were an algebraic closure system this would violate acsfiel 17696. (Contributed by Mario Carneiro, 13-Oct-2015.) |
| Ref | Expression |
|---|---|
| cssmre.v | ⊢ 𝑉 = (Base‘𝑊) |
| cssmre.c | ⊢ 𝐶 = (ClSubSp‘𝑊) |
| Ref | Expression |
|---|---|
| cssmre | ⊢ (𝑊 ∈ PreHil → 𝐶 ∈ (Moore‘𝑉)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cssmre.v | . . . . . 6 ⊢ 𝑉 = (Base‘𝑊) | |
| 2 | cssmre.c | . . . . . 6 ⊢ 𝐶 = (ClSubSp‘𝑊) | |
| 3 | 1, 2 | cssss 21744 | . . . . 5 ⊢ (𝑥 ∈ 𝐶 → 𝑥 ⊆ 𝑉) |
| 4 | velpw 4561 | . . . . 5 ⊢ (𝑥 ∈ 𝒫 𝑉 ↔ 𝑥 ⊆ 𝑉) | |
| 5 | 3, 4 | sylibr 236 | . . . 4 ⊢ (𝑥 ∈ 𝐶 → 𝑥 ∈ 𝒫 𝑉) |
| 6 | 5 | a1i 11 | . . 3 ⊢ (𝑊 ∈ PreHil → (𝑥 ∈ 𝐶 → 𝑥 ∈ 𝒫 𝑉)) |
| 7 | 6 | ssrdv 3943 | . 2 ⊢ (𝑊 ∈ PreHil → 𝐶 ⊆ 𝒫 𝑉) |
| 8 | 1, 2 | css1 21749 | . 2 ⊢ (𝑊 ∈ PreHil → 𝑉 ∈ 𝐶) |
| 9 | intss1 4922 | . . . . . . . . . . . 12 ⊢ (𝑧 ∈ 𝑥 → ∩ 𝑥 ⊆ 𝑧) | |
| 10 | eqid 2763 | . . . . . . . . . . . . 13 ⊢ (ocv‘𝑊) = (ocv‘𝑊) | |
| 11 | 10 | ocv2ss 21732 | . . . . . . . . . . . 12 ⊢ (∩ 𝑥 ⊆ 𝑧 → ((ocv‘𝑊)‘𝑧) ⊆ ((ocv‘𝑊)‘∩ 𝑥)) |
| 12 | 10 | ocv2ss 21732 | . . . . . . . . . . . 12 ⊢ (((ocv‘𝑊)‘𝑧) ⊆ ((ocv‘𝑊)‘∩ 𝑥) → ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 13 | 9, 11, 12 | 3syl 18 | . . . . . . . . . . 11 ⊢ (𝑧 ∈ 𝑥 → ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 14 | 13 | ad2antll 739 | . . . . . . . . . 10 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 15 | simprl 780 | . . . . . . . . . 10 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥))) | |
| 16 | 14, 15 | sseldd 3938 | . . . . . . . . 9 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 17 | simpl2 1207 | . . . . . . . . . . 11 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑥 ⊆ 𝐶) | |
| 18 | simprr 782 | . . . . . . . . . . 11 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑧 ∈ 𝑥) | |
| 19 | 17, 18 | sseldd 3938 | . . . . . . . . . 10 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑧 ∈ 𝐶) |
| 20 | 10, 2 | cssi 21743 | . . . . . . . . . 10 ⊢ (𝑧 ∈ 𝐶 → 𝑧 = ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 21 | 19, 20 | syl 17 | . . . . . . . . 9 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑧 = ((ocv‘𝑊)‘((ocv‘𝑊)‘𝑧))) |
| 22 | 16, 21 | eleqtrrd 2866 | . . . . . . . 8 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ∧ 𝑧 ∈ 𝑥)) → 𝑦 ∈ 𝑧) |
| 23 | 22 | expr 460 | . . . . . . 7 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ 𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥))) → (𝑧 ∈ 𝑥 → 𝑦 ∈ 𝑧)) |
| 24 | 23 | alrimiv 1948 | . . . . . 6 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ 𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥))) → ∀𝑧(𝑧 ∈ 𝑥 → 𝑦 ∈ 𝑧)) |
| 25 | vex 3459 | . . . . . . 7 ⊢ 𝑦 ∈ V | |
| 26 | 25 | elint 4912 | . . . . . 6 ⊢ (𝑦 ∈ ∩ 𝑥 ↔ ∀𝑧(𝑧 ∈ 𝑥 → 𝑦 ∈ 𝑧)) |
| 27 | 24, 26 | sylibr 236 | . . . . 5 ⊢ (((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) ∧ 𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥))) → 𝑦 ∈ ∩ 𝑥) |
| 28 | 27 | ex 416 | . . . 4 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → (𝑦 ∈ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) → 𝑦 ∈ ∩ 𝑥)) |
| 29 | 28 | ssrdv 3943 | . . 3 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ∩ 𝑥) |
| 30 | simp1 1150 | . . . 4 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → 𝑊 ∈ PreHil) | |
| 31 | intssuni 4929 | . . . . . 6 ⊢ (𝑥 ≠ ∅ → ∩ 𝑥 ⊆ ∪ 𝑥) | |
| 32 | 31 | 3ad2ant3 1149 | . . . . 5 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → ∩ 𝑥 ⊆ ∪ 𝑥) |
| 33 | simp2 1151 | . . . . . . 7 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → 𝑥 ⊆ 𝐶) | |
| 34 | 7 | 3ad2ant1 1147 | . . . . . . 7 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → 𝐶 ⊆ 𝒫 𝑉) |
| 35 | 33, 34 | sstrd 3947 | . . . . . 6 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → 𝑥 ⊆ 𝒫 𝑉) |
| 36 | sspwuni 5058 | . . . . . 6 ⊢ (𝑥 ⊆ 𝒫 𝑉 ↔ ∪ 𝑥 ⊆ 𝑉) | |
| 37 | 35, 36 | sylib 220 | . . . . 5 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → ∪ 𝑥 ⊆ 𝑉) |
| 38 | 32, 37 | sstrd 3947 | . . . 4 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → ∩ 𝑥 ⊆ 𝑉) |
| 39 | 1, 2, 10 | iscss2 21745 | . . . 4 ⊢ ((𝑊 ∈ PreHil ∧ ∩ 𝑥 ⊆ 𝑉) → (∩ 𝑥 ∈ 𝐶 ↔ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ∩ 𝑥)) |
| 40 | 30, 38, 39 | syl2anc 593 | . . 3 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → (∩ 𝑥 ∈ 𝐶 ↔ ((ocv‘𝑊)‘((ocv‘𝑊)‘∩ 𝑥)) ⊆ ∩ 𝑥)) |
| 41 | 29, 40 | mpbird 259 | . 2 ⊢ ((𝑊 ∈ PreHil ∧ 𝑥 ⊆ 𝐶 ∧ 𝑥 ≠ ∅) → ∩ 𝑥 ∈ 𝐶) |
| 42 | 7, 8, 41 | ismred 17640 | 1 ⊢ (𝑊 ∈ PreHil → 𝐶 ∈ (Moore‘𝑉)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∧ w3a 1099 ∀wal 1559 = wceq 1561 ∈ wcel 2143 ≠ wne 2958 ⊆ wss 3905 ∅c0 4286 𝒫 cpw 4556 ∪ cuni 4866 ∩ cint 4906 ‘cfv 6521 Basecbs 17255 Moorecmre 17620 PreHilcphl 21683 ocvcocv 21719 ClSubSpccss 21720 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5228 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7718 ax-cnex 11140 ax-resscn 11141 ax-1cn 11142 ax-icn 11143 ax-addcl 11144 ax-addrcl 11145 ax-mulcl 11146 ax-mulrcl 11147 ax-mulcom 11148 ax-addass 11149 ax-mulass 11150 ax-distr 11151 ax-i2m1 11152 ax-1ne0 11153 ax-1rid 11154 ax-rnegex 11155 ax-rrecex 11156 ax-cnre 11157 ax-pre-lttri 11158 ax-pre-lttrn 11159 ax-pre-ltadd 11160 ax-pre-mulgt0 11161 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-tpos 8206 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-er 8678 df-map 8810 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11229 df-mnf 11230 df-xr 11231 df-ltxr 11232 df-le 11233 df-sub 11427 df-neg 11428 df-nn 12221 df-2 12290 df-3 12291 df-4 12292 df-5 12293 df-6 12294 df-7 12295 df-8 12296 df-sets 17210 df-slot 17228 df-ndx 17240 df-base 17256 df-plusg 17309 df-mulr 17310 df-sca 17312 df-vsca 17313 df-ip 17314 df-0g 17480 df-mre 17624 df-mgm 18684 df-sgrp 18763 df-mnd 18779 df-mhm 18827 df-grp 18988 df-ghm 19264 df-mgp 20197 df-ur 20242 df-ring 20295 df-oppr 20396 df-rhm 20531 df-staf 20895 df-srng 20896 df-lmod 20936 df-lmhm 21096 df-lvec 21177 df-sra 21247 df-rgmod 21248 df-phl 21685 df-ocv 21722 df-css 21723 |
| This theorem is referenced by: mrccss 21753 |
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