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Theorem nmopun 28063
Description: Norm of a unitary Hilbert space operator. (Contributed by NM, 25-Feb-2006.) (New usage is discouraged.)
Assertion
Ref Expression
nmopun (( ℋ ≠ 0𝑇 ∈ UniOp) → (normop𝑇) = 1)

Proof of Theorem nmopun
Dummy variables 𝑥 𝑤 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 unoplin 27969 . . . . 5 (𝑇 ∈ UniOp → 𝑇 ∈ LinOp)
2 lnopf 27908 . . . . 5 (𝑇 ∈ LinOp → 𝑇: ℋ⟶ ℋ)
31, 2syl 17 . . . 4 (𝑇 ∈ UniOp → 𝑇: ℋ⟶ ℋ)
4 nmopval 27905 . . . 4 (𝑇: ℋ⟶ ℋ → (normop𝑇) = sup({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}, ℝ*, < ))
53, 4syl 17 . . 3 (𝑇 ∈ UniOp → (normop𝑇) = sup({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}, ℝ*, < ))
65adantl 480 . 2 (( ℋ ≠ 0𝑇 ∈ UniOp) → (normop𝑇) = sup({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}, ℝ*, < ))
7 nmopsetretHIL 27913 . . . . . . 7 (𝑇: ℋ⟶ ℋ → {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ)
8 ressxr 9939 . . . . . . 7 ℝ ⊆ ℝ*
97, 8syl6ss 3579 . . . . . 6 (𝑇: ℋ⟶ ℋ → {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ*)
103, 9syl 17 . . . . 5 (𝑇 ∈ UniOp → {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ*)
1110adantl 480 . . . 4 (( ℋ ≠ 0𝑇 ∈ UniOp) → {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ*)
12 1re 9895 . . . . 5 1 ∈ ℝ
1312rexri 9948 . . . 4 1 ∈ ℝ*
1411, 13jctir 558 . . 3 (( ℋ ≠ 0𝑇 ∈ UniOp) → ({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ* ∧ 1 ∈ ℝ*))
15 vex 3175 . . . . . . 7 𝑧 ∈ V
16 eqeq1 2613 . . . . . . . . 9 (𝑥 = 𝑧 → (𝑥 = (norm‘(𝑇𝑦)) ↔ 𝑧 = (norm‘(𝑇𝑦))))
1716anbi2d 735 . . . . . . . 8 (𝑥 = 𝑧 → (((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦))) ↔ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦)))))
1817rexbidv 3033 . . . . . . 7 (𝑥 = 𝑧 → (∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦))) ↔ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦)))))
1915, 18elab 3318 . . . . . 6 (𝑧 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ↔ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦))))
20 unopnorm 27966 . . . . . . . . . . 11 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → (norm‘(𝑇𝑦)) = (norm𝑦))
2120eqeq2d 2619 . . . . . . . . . 10 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → (𝑧 = (norm‘(𝑇𝑦)) ↔ 𝑧 = (norm𝑦)))
2221anbi2d 735 . . . . . . . . 9 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → (((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦))) ↔ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm𝑦))))
23 breq1 4580 . . . . . . . . . 10 (𝑧 = (norm𝑦) → (𝑧 ≤ 1 ↔ (norm𝑦) ≤ 1))
2423biimparc 502 . . . . . . . . 9 (((norm𝑦) ≤ 1 ∧ 𝑧 = (norm𝑦)) → 𝑧 ≤ 1)
2522, 24syl6bi 241 . . . . . . . 8 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → (((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦))) → 𝑧 ≤ 1))
2625rexlimdva 3012 . . . . . . 7 (𝑇 ∈ UniOp → (∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦))) → 𝑧 ≤ 1))
2726imp 443 . . . . . 6 ((𝑇 ∈ UniOp ∧ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑧 = (norm‘(𝑇𝑦)))) → 𝑧 ≤ 1)
2819, 27sylan2b 490 . . . . 5 ((𝑇 ∈ UniOp ∧ 𝑧 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}) → 𝑧 ≤ 1)
2928ralrimiva 2948 . . . 4 (𝑇 ∈ UniOp → ∀𝑧 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 ≤ 1)
3029adantl 480 . . 3 (( ℋ ≠ 0𝑇 ∈ UniOp) → ∀𝑧 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 ≤ 1)
31 hne0 27596 . . . . . . . . . . 11 ( ℋ ≠ 0 ↔ ∃𝑦 ∈ ℋ 𝑦 ≠ 0)
32 norm1hex 27298 . . . . . . . . . . 11 (∃𝑦 ∈ ℋ 𝑦 ≠ 0 ↔ ∃𝑦 ∈ ℋ (norm𝑦) = 1)
3331, 32sylbb 207 . . . . . . . . . 10 ( ℋ ≠ 0 → ∃𝑦 ∈ ℋ (norm𝑦) = 1)
3433adantr 479 . . . . . . . . 9 (( ℋ ≠ 0𝑇 ∈ UniOp) → ∃𝑦 ∈ ℋ (norm𝑦) = 1)
35 1le1 10504 . . . . . . . . . . . . . 14 1 ≤ 1
36 breq1 4580 . . . . . . . . . . . . . 14 ((norm𝑦) = 1 → ((norm𝑦) ≤ 1 ↔ 1 ≤ 1))
3735, 36mpbiri 246 . . . . . . . . . . . . 13 ((norm𝑦) = 1 → (norm𝑦) ≤ 1)
3837a1i 11 . . . . . . . . . . . 12 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → ((norm𝑦) = 1 → (norm𝑦) ≤ 1))
3920adantr 479 . . . . . . . . . . . . . . 15 (((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) ∧ (norm𝑦) = 1) → (norm‘(𝑇𝑦)) = (norm𝑦))
40 eqeq2 2620 . . . . . . . . . . . . . . . 16 ((norm𝑦) = 1 → ((norm‘(𝑇𝑦)) = (norm𝑦) ↔ (norm‘(𝑇𝑦)) = 1))
4140adantl 480 . . . . . . . . . . . . . . 15 (((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) ∧ (norm𝑦) = 1) → ((norm‘(𝑇𝑦)) = (norm𝑦) ↔ (norm‘(𝑇𝑦)) = 1))
4239, 41mpbid 220 . . . . . . . . . . . . . 14 (((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) ∧ (norm𝑦) = 1) → (norm‘(𝑇𝑦)) = 1)
4342eqcomd 2615 . . . . . . . . . . . . 13 (((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) ∧ (norm𝑦) = 1) → 1 = (norm‘(𝑇𝑦)))
4443ex 448 . . . . . . . . . . . 12 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → ((norm𝑦) = 1 → 1 = (norm‘(𝑇𝑦))))
4538, 44jcad 553 . . . . . . . . . . 11 ((𝑇 ∈ UniOp ∧ 𝑦 ∈ ℋ) → ((norm𝑦) = 1 → ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦)))))
4645adantll 745 . . . . . . . . . 10 ((( ℋ ≠ 0𝑇 ∈ UniOp) ∧ 𝑦 ∈ ℋ) → ((norm𝑦) = 1 → ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦)))))
4746reximdva 2999 . . . . . . . . 9 (( ℋ ≠ 0𝑇 ∈ UniOp) → (∃𝑦 ∈ ℋ (norm𝑦) = 1 → ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦)))))
4834, 47mpd 15 . . . . . . . 8 (( ℋ ≠ 0𝑇 ∈ UniOp) → ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦))))
49 1ex 9891 . . . . . . . . 9 1 ∈ V
50 eqeq1 2613 . . . . . . . . . . 11 (𝑥 = 1 → (𝑥 = (norm‘(𝑇𝑦)) ↔ 1 = (norm‘(𝑇𝑦))))
5150anbi2d 735 . . . . . . . . . 10 (𝑥 = 1 → (((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦))) ↔ ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦)))))
5251rexbidv 3033 . . . . . . . . 9 (𝑥 = 1 → (∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦))) ↔ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦)))))
5349, 52elab 3318 . . . . . . . 8 (1 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ↔ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 1 = (norm‘(𝑇𝑦))))
5448, 53sylibr 222 . . . . . . 7 (( ℋ ≠ 0𝑇 ∈ UniOp) → 1 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))})
5554adantr 479 . . . . . 6 ((( ℋ ≠ 0𝑇 ∈ UniOp) ∧ 𝑧 ∈ ℝ) → 1 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))})
56 breq2 4581 . . . . . . 7 (𝑤 = 1 → (𝑧 < 𝑤𝑧 < 1))
5756rspcev 3281 . . . . . 6 ((1 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ∧ 𝑧 < 1) → ∃𝑤 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 < 𝑤)
5855, 57sylan 486 . . . . 5 (((( ℋ ≠ 0𝑇 ∈ UniOp) ∧ 𝑧 ∈ ℝ) ∧ 𝑧 < 1) → ∃𝑤 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 < 𝑤)
5958ex 448 . . . 4 ((( ℋ ≠ 0𝑇 ∈ UniOp) ∧ 𝑧 ∈ ℝ) → (𝑧 < 1 → ∃𝑤 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 < 𝑤))
6059ralrimiva 2948 . . 3 (( ℋ ≠ 0𝑇 ∈ UniOp) → ∀𝑧 ∈ ℝ (𝑧 < 1 → ∃𝑤 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 < 𝑤))
61 supxr2 11972 . . 3 ((({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))} ⊆ ℝ* ∧ 1 ∈ ℝ*) ∧ (∀𝑧 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 ≤ 1 ∧ ∀𝑧 ∈ ℝ (𝑧 < 1 → ∃𝑤 ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}𝑧 < 𝑤))) → sup({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}, ℝ*, < ) = 1)
6214, 30, 60, 61syl12anc 1315 . 2 (( ℋ ≠ 0𝑇 ∈ UniOp) → sup({𝑥 ∣ ∃𝑦 ∈ ℋ ((norm𝑦) ≤ 1 ∧ 𝑥 = (norm‘(𝑇𝑦)))}, ℝ*, < ) = 1)
636, 62eqtrd 2643 1 (( ℋ ≠ 0𝑇 ∈ UniOp) → (normop𝑇) = 1)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 194  wa 382   = wceq 1474  wcel 1976  {cab 2595  wne 2779  wral 2895  wrex 2896  wss 3539   class class class wbr 4577  wf 5786  cfv 5790  supcsup 8206  cr 9791  1c1 9793  *cxr 9929   < clt 9930  cle 9931  chil 26966  normcno 26970  0c0v 26971  0c0h 26982  normopcnop 26992  LinOpclo 26994  UniOpcuo 26996
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2033  ax-13 2233  ax-ext 2589  ax-rep 4693  ax-sep 4703  ax-nul 4712  ax-pow 4764  ax-pr 4828  ax-un 6824  ax-cnex 9848  ax-resscn 9849  ax-1cn 9850  ax-icn 9851  ax-addcl 9852  ax-addrcl 9853  ax-mulcl 9854  ax-mulrcl 9855  ax-mulcom 9856  ax-addass 9857  ax-mulass 9858  ax-distr 9859  ax-i2m1 9860  ax-1ne0 9861  ax-1rid 9862  ax-rnegex 9863  ax-rrecex 9864  ax-cnre 9865  ax-pre-lttri 9866  ax-pre-lttrn 9867  ax-pre-ltadd 9868  ax-pre-mulgt0 9869  ax-pre-sup 9870  ax-hilex 27046  ax-hfvadd 27047  ax-hvcom 27048  ax-hvass 27049  ax-hv0cl 27050  ax-hvaddid 27051  ax-hfvmul 27052  ax-hvmulid 27053  ax-hvmulass 27054  ax-hvdistr1 27055  ax-hvdistr2 27056  ax-hvmul0 27057  ax-hfi 27126  ax-his1 27129  ax-his2 27130  ax-his3 27131  ax-his4 27132
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-nel 2782  df-ral 2900  df-rex 2901  df-reu 2902  df-rmo 2903  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-iun 4451  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4939  df-id 4943  df-po 4949  df-so 4950  df-fr 4987  df-we 4989  df-xp 5034  df-rel 5035  df-cnv 5036  df-co 5037  df-dm 5038  df-rn 5039  df-res 5040  df-ima 5041  df-pred 5583  df-ord 5629  df-on 5630  df-lim 5631  df-suc 5632  df-iota 5754  df-fun 5792  df-fn 5793  df-f 5794  df-f1 5795  df-fo 5796  df-f1o 5797  df-fv 5798  df-riota 6489  df-ov 6530  df-oprab 6531  df-mpt2 6532  df-om 6935  df-1st 7036  df-2nd 7037  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-er 7606  df-map 7723  df-en 7819  df-dom 7820  df-sdom 7821  df-sup 8208  df-pnf 9932  df-mnf 9933  df-xr 9934  df-ltxr 9935  df-le 9936  df-sub 10119  df-neg 10120  df-div 10534  df-nn 10868  df-2 10926  df-3 10927  df-4 10928  df-n0 11140  df-z 11211  df-uz 11520  df-rp 11665  df-seq 12619  df-exp 12678  df-cj 13633  df-re 13634  df-im 13635  df-sqrt 13769  df-abs 13770  df-grpo 26497  df-gid 26498  df-ablo 26552  df-vc 26567  df-nv 26615  df-va 26618  df-ba 26619  df-sm 26620  df-0v 26621  df-nmcv 26623  df-hnorm 27015  df-hba 27016  df-hvsub 27018  df-hlim 27019  df-sh 27254  df-ch 27268  df-ch0 27300  df-nmop 27888  df-lnop 27890  df-unop 27892
This theorem is referenced by:  unopbd  28064  unierri  28153
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