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Mirrors > Home > MPE Home > Th. List > nmoolb | Structured version Visualization version GIF version |
Description: A lower bound for an operator norm. (Contributed by NM, 8-Dec-2007.) (New usage is discouraged.) |
Ref | Expression |
---|---|
nmoolb.1 | ⊢ 𝑋 = (BaseSet‘𝑈) |
nmoolb.2 | ⊢ 𝑌 = (BaseSet‘𝑊) |
nmoolb.l | ⊢ 𝐿 = (normCV‘𝑈) |
nmoolb.m | ⊢ 𝑀 = (normCV‘𝑊) |
nmoolb.3 | ⊢ 𝑁 = (𝑈 normOpOLD 𝑊) |
Ref | Expression |
---|---|
nmoolb | ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) ∧ (𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1)) → (𝑀‘(𝑇‘𝐴)) ≤ (𝑁‘𝑇)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nmoolb.2 | . . . . . 6 ⊢ 𝑌 = (BaseSet‘𝑊) | |
2 | nmoolb.m | . . . . . 6 ⊢ 𝑀 = (normCV‘𝑊) | |
3 | 1, 2 | nmosetre 28845 | . . . . 5 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))} ⊆ ℝ) |
4 | ressxr 10877 | . . . . 5 ⊢ ℝ ⊆ ℝ* | |
5 | 3, 4 | sstrdi 3913 | . . . 4 ⊢ ((𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))} ⊆ ℝ*) |
6 | 5 | 3adant1 1132 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))} ⊆ ℝ*) |
7 | fveq2 6717 | . . . . . . . 8 ⊢ (𝑦 = 𝐴 → (𝐿‘𝑦) = (𝐿‘𝐴)) | |
8 | 7 | breq1d 5063 | . . . . . . 7 ⊢ (𝑦 = 𝐴 → ((𝐿‘𝑦) ≤ 1 ↔ (𝐿‘𝐴) ≤ 1)) |
9 | 2fveq3 6722 | . . . . . . . 8 ⊢ (𝑦 = 𝐴 → (𝑀‘(𝑇‘𝑦)) = (𝑀‘(𝑇‘𝐴))) | |
10 | 9 | eqeq2d 2748 | . . . . . . 7 ⊢ (𝑦 = 𝐴 → ((𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦)) ↔ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝐴)))) |
11 | 8, 10 | anbi12d 634 | . . . . . 6 ⊢ (𝑦 = 𝐴 → (((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦))) ↔ ((𝐿‘𝐴) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝐴))))) |
12 | eqid 2737 | . . . . . . 7 ⊢ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝐴)) | |
13 | 12 | biantru 533 | . . . . . 6 ⊢ ((𝐿‘𝐴) ≤ 1 ↔ ((𝐿‘𝐴) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝐴)))) |
14 | 11, 13 | bitr4di 292 | . . . . 5 ⊢ (𝑦 = 𝐴 → (((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦))) ↔ (𝐿‘𝐴) ≤ 1)) |
15 | 14 | rspcev 3537 | . . . 4 ⊢ ((𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1) → ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦)))) |
16 | fvex 6730 | . . . . 5 ⊢ (𝑀‘(𝑇‘𝐴)) ∈ V | |
17 | eqeq1 2741 | . . . . . . 7 ⊢ (𝑥 = (𝑀‘(𝑇‘𝐴)) → (𝑥 = (𝑀‘(𝑇‘𝑦)) ↔ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦)))) | |
18 | 17 | anbi2d 632 | . . . . . 6 ⊢ (𝑥 = (𝑀‘(𝑇‘𝐴)) → (((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦))) ↔ ((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦))))) |
19 | 18 | rexbidv 3216 | . . . . 5 ⊢ (𝑥 = (𝑀‘(𝑇‘𝐴)) → (∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦))) ↔ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦))))) |
20 | 16, 19 | elab 3587 | . . . 4 ⊢ ((𝑀‘(𝑇‘𝐴)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))} ↔ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ (𝑀‘(𝑇‘𝐴)) = (𝑀‘(𝑇‘𝑦)))) |
21 | 15, 20 | sylibr 237 | . . 3 ⊢ ((𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1) → (𝑀‘(𝑇‘𝐴)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}) |
22 | supxrub 12914 | . . 3 ⊢ (({𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))} ⊆ ℝ* ∧ (𝑀‘(𝑇‘𝐴)) ∈ {𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}) → (𝑀‘(𝑇‘𝐴)) ≤ sup({𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}, ℝ*, < )) | |
23 | 6, 21, 22 | syl2an 599 | . 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) ∧ (𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1)) → (𝑀‘(𝑇‘𝐴)) ≤ sup({𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}, ℝ*, < )) |
24 | nmoolb.1 | . . . 4 ⊢ 𝑋 = (BaseSet‘𝑈) | |
25 | nmoolb.l | . . . 4 ⊢ 𝐿 = (normCV‘𝑈) | |
26 | nmoolb.3 | . . . 4 ⊢ 𝑁 = (𝑈 normOpOLD 𝑊) | |
27 | 24, 1, 25, 2, 26 | nmooval 28844 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → (𝑁‘𝑇) = sup({𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}, ℝ*, < )) |
28 | 27 | adantr 484 | . 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) ∧ (𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1)) → (𝑁‘𝑇) = sup({𝑥 ∣ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑥 = (𝑀‘(𝑇‘𝑦)))}, ℝ*, < )) |
29 | 23, 28 | breqtrrd 5081 | 1 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) ∧ (𝐴 ∈ 𝑋 ∧ (𝐿‘𝐴) ≤ 1)) → (𝑀‘(𝑇‘𝐴)) ≤ (𝑁‘𝑇)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1089 = wceq 1543 ∈ wcel 2110 {cab 2714 ∃wrex 3062 ⊆ wss 3866 class class class wbr 5053 ⟶wf 6376 ‘cfv 6380 (class class class)co 7213 supcsup 9056 ℝcr 10728 1c1 10730 ℝ*cxr 10866 < clt 10867 ≤ cle 10868 NrmCVeccnv 28665 BaseSetcba 28667 normCVcnmcv 28671 normOpOLD cnmoo 28822 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-id 5455 df-po 5468 df-so 5469 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-1st 7761 df-2nd 7762 df-er 8391 df-map 8510 df-en 8627 df-dom 8628 df-sdom 8629 df-sup 9058 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-vc 28640 df-nv 28673 df-va 28676 df-ba 28677 df-sm 28678 df-0v 28679 df-nmcv 28681 df-nmoo 28826 |
This theorem is referenced by: nmblolbii 28880 |
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