Theorem nmopsetn0 31809

Description: The set in the supremum of the operator norm definition df-nmop 31783 is nonempty. (Contributed by NM, 9-Feb-2006.) (New usage is discouraged.)

Assertion

Ref	Expression
nmopsetn0	⊢ (normℎ‘(𝑇‘0ℎ)) ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦)))}

Distinct variable group:   𝑥,𝑦,𝑇

Proof of Theorem nmopsetn0

Step	Hyp	Ref	Expression
1		ax-hv0cl 30947	. . 3 ⊢ 0ℎ ∈ ℋ
2		norm0 31072	. . . . 5 ⊢ (normℎ‘0ℎ) = 0
3		0le1 11643	. . . . 5 ⊢ 0 ≤ 1
4	2, 3	eqbrtri 5113	. . . 4 ⊢ (normℎ‘0ℎ) ≤ 1
5		eqid 2729	. . . 4 ⊢ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ))
6	4, 5	pm3.2i 470	. . 3 ⊢ ((normℎ‘0ℎ) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ)))
7		fveq2 6822	. . . . . 6 ⊢ (𝑦 = 0ℎ → (normℎ‘𝑦) = (normℎ‘0ℎ))
8	7	breq1d 5102	. . . . 5 ⊢ (𝑦 = 0ℎ → ((normℎ‘𝑦) ≤ 1 ↔ (normℎ‘0ℎ) ≤ 1))
9		2fveq3 6827	. . . . . 6 ⊢ (𝑦 = 0ℎ → (normℎ‘(𝑇‘𝑦)) = (normℎ‘(𝑇‘0ℎ)))
10	9	eqeq2d 2740	. . . . 5 ⊢ (𝑦 = 0ℎ → ((normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)) ↔ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ))))
11	8, 10	anbi12d 632	. . . 4 ⊢ (𝑦 = 0ℎ → (((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))) ↔ ((normℎ‘0ℎ) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ)))))
12	11	rspcev 3577	. . 3 ⊢ ((0ℎ ∈ ℋ ∧ ((normℎ‘0ℎ) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ)))) → ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))))
13	1, 6, 12	mp2an 692	. 2 ⊢ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)))
14		fvex 6835	. . 3 ⊢ (normℎ‘(𝑇‘0ℎ)) ∈ V
15		eqeq1 2733	. . . . 5 ⊢ (𝑥 = (normℎ‘(𝑇‘0ℎ)) → (𝑥 = (normℎ‘(𝑇‘𝑦)) ↔ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))))
16	15	anbi2d 630	. . . 4 ⊢ (𝑥 = (normℎ‘(𝑇‘0ℎ)) → (((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦))) ↔ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)))))
17	16	rexbidv 3153	. . 3 ⊢ (𝑥 = (normℎ‘(𝑇‘0ℎ)) → (∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦))) ↔ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)))))
18	14, 17	elab 3635	. 2 ⊢ ((normℎ‘(𝑇‘0ℎ)) ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦)))} ↔ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))))
19	13, 18	mpbir 231	1 ⊢ (normℎ‘(𝑇‘0ℎ)) ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦)))}

Syntax hints:   ∧ wa 395   = wceq 1540   ∈ wcel 2109  {cab 2707  ∃wrex 3053   class class class wbr 5092  ‘cfv 6482  0cc0 11009  1c1 11010   ≤ cle 11150   ℋchba 30863  norm_ℎcno 30867  0_ℎc0v 30868

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5235  ax-nul 5245  ax-pow 5304  ax-pr 5371  ax-un 7671  ax-cnex 11065  ax-resscn 11066  ax-1cn 11067  ax-icn 11068  ax-addcl 11069  ax-addrcl 11070  ax-mulcl 11071  ax-mulrcl 11072  ax-mulcom 11073  ax-addass 11074  ax-mulass 11075  ax-distr 11076  ax-i2m1 11077  ax-1ne0 11078  ax-1rid 11079  ax-rnegex 11080  ax-rrecex 11081  ax-cnre 11082  ax-pre-lttri 11083  ax-pre-lttrn 11084  ax-pre-ltadd 11085  ax-pre-mulgt0 11086  ax-hv0cl 30947  ax-hvmul0 30954  ax-hfi 31023  ax-his3 31028

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-rmo 3343  df-reu 3344  df-rab 3395  df-v 3438  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4285  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4859  df-iun 4943  df-br 5093  df-opab 5155  df-mpt 5174  df-tr 5200  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-pred 6249  df-ord 6310  df-on 6311  df-lim 6312  df-suc 6313  df-iota 6438  df-fun 6484  df-fn 6485  df-f 6486  df-f1 6487  df-fo 6488  df-f1o 6489  df-fv 6490  df-riota 7306  df-ov 7352  df-oprab 7353  df-mpo 7354  df-om 7800  df-2nd 7925  df-frecs 8214  df-wrecs 8245  df-recs 8294  df-rdg 8332  df-er 8625  df-en 8873  df-dom 8874  df-sdom 8875  df-pnf 11151  df-mnf 11152  df-xr 11153  df-ltxr 11154  df-le 11155  df-sub 11349  df-neg 11350  df-div 11778  df-nn 12129  df-2 12191  df-n0 12385  df-z 12472  df-uz 12736  df-rp 12894  df-seq 13909  df-exp 13969  df-cj 15006  df-re 15007  df-im 15008  df-sqrt 15142  df-hnorm 30912

This theorem is referenced by:  nmoprepnf  31811