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Mirrors > Home > MPE Home > Th. List > nmosetn0 | Structured version Visualization version GIF version |
Description: The set in the supremum of the operator norm definition df-nmoo 29107 is nonempty. (Contributed by NM, 8-Dec-2007.) (New usage is discouraged.) |
Ref | Expression |
---|---|
nmosetn0.1 | ⊢ 𝑋 = (BaseSet‘𝑈) |
nmosetn0.5 | ⊢ 𝑍 = (0vec‘𝑈) |
nmosetn0.4 | ⊢ 𝑀 = (normCV‘𝑈) |
Ref | Expression |
---|---|
nmosetn0 | ⊢ (𝑈 ∈ NrmCVec → (𝑁‘(𝑇‘𝑍)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ 𝑥 = (𝑁‘(𝑇‘𝑦)))}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nmosetn0.1 | . . . 4 ⊢ 𝑋 = (BaseSet‘𝑈) | |
2 | nmosetn0.5 | . . . 4 ⊢ 𝑍 = (0vec‘𝑈) | |
3 | 1, 2 | nvzcl 28996 | . . 3 ⊢ (𝑈 ∈ NrmCVec → 𝑍 ∈ 𝑋) |
4 | nmosetn0.4 | . . . . . 6 ⊢ 𝑀 = (normCV‘𝑈) | |
5 | 2, 4 | nvz0 29030 | . . . . 5 ⊢ (𝑈 ∈ NrmCVec → (𝑀‘𝑍) = 0) |
6 | 0le1 11498 | . . . . 5 ⊢ 0 ≤ 1 | |
7 | 5, 6 | eqbrtrdi 5113 | . . . 4 ⊢ (𝑈 ∈ NrmCVec → (𝑀‘𝑍) ≤ 1) |
8 | eqid 2738 | . . . 4 ⊢ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑍)) | |
9 | 7, 8 | jctir 521 | . . 3 ⊢ (𝑈 ∈ NrmCVec → ((𝑀‘𝑍) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑍)))) |
10 | fveq2 6774 | . . . . . 6 ⊢ (𝑦 = 𝑍 → (𝑀‘𝑦) = (𝑀‘𝑍)) | |
11 | 10 | breq1d 5084 | . . . . 5 ⊢ (𝑦 = 𝑍 → ((𝑀‘𝑦) ≤ 1 ↔ (𝑀‘𝑍) ≤ 1)) |
12 | 2fveq3 6779 | . . . . . 6 ⊢ (𝑦 = 𝑍 → (𝑁‘(𝑇‘𝑦)) = (𝑁‘(𝑇‘𝑍))) | |
13 | 12 | eqeq2d 2749 | . . . . 5 ⊢ (𝑦 = 𝑍 → ((𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦)) ↔ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑍)))) |
14 | 11, 13 | anbi12d 631 | . . . 4 ⊢ (𝑦 = 𝑍 → (((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦))) ↔ ((𝑀‘𝑍) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑍))))) |
15 | 14 | rspcev 3561 | . . 3 ⊢ ((𝑍 ∈ 𝑋 ∧ ((𝑀‘𝑍) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑍)))) → ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦)))) |
16 | 3, 9, 15 | syl2anc 584 | . 2 ⊢ (𝑈 ∈ NrmCVec → ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦)))) |
17 | fvex 6787 | . . 3 ⊢ (𝑁‘(𝑇‘𝑍)) ∈ V | |
18 | eqeq1 2742 | . . . . 5 ⊢ (𝑥 = (𝑁‘(𝑇‘𝑍)) → (𝑥 = (𝑁‘(𝑇‘𝑦)) ↔ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦)))) | |
19 | 18 | anbi2d 629 | . . . 4 ⊢ (𝑥 = (𝑁‘(𝑇‘𝑍)) → (((𝑀‘𝑦) ≤ 1 ∧ 𝑥 = (𝑁‘(𝑇‘𝑦))) ↔ ((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦))))) |
20 | 19 | rexbidv 3226 | . . 3 ⊢ (𝑥 = (𝑁‘(𝑇‘𝑍)) → (∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ 𝑥 = (𝑁‘(𝑇‘𝑦))) ↔ ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦))))) |
21 | 17, 20 | elab 3609 | . 2 ⊢ ((𝑁‘(𝑇‘𝑍)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ 𝑥 = (𝑁‘(𝑇‘𝑦)))} ↔ ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ (𝑁‘(𝑇‘𝑍)) = (𝑁‘(𝑇‘𝑦)))) |
22 | 16, 21 | sylibr 233 | 1 ⊢ (𝑈 ∈ NrmCVec → (𝑁‘(𝑇‘𝑍)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝑀‘𝑦) ≤ 1 ∧ 𝑥 = (𝑁‘(𝑇‘𝑦)))}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1539 ∈ wcel 2106 {cab 2715 ∃wrex 3065 class class class wbr 5074 ‘cfv 6433 0cc0 10871 1c1 10872 ≤ cle 11010 NrmCVeccnv 28946 BaseSetcba 28948 0veccn0v 28950 normCVcnmcv 28952 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-sup 9201 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-n0 12234 df-z 12320 df-uz 12583 df-rp 12731 df-seq 13722 df-exp 13783 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-grpo 28855 df-gid 28856 df-ginv 28857 df-ablo 28907 df-vc 28921 df-nv 28954 df-va 28957 df-ba 28958 df-sm 28959 df-0v 28960 df-nmcv 28962 |
This theorem is referenced by: nmooge0 29129 nmorepnf 29130 |
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