Theorem nmopsetn0 30515

Description: The set in the supremum of the operator norm definition df-nmop 30489 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 29653	. . 3 ⊢ 0ℎ ∈ ℋ
2		norm0 29778	. . . . 5 ⊢ (normℎ‘0ℎ) = 0
3		0le1 11599	. . . . 5 ⊢ 0 ≤ 1
4	2, 3	eqbrtri 5113	. . . 4 ⊢ (normℎ‘0ℎ) ≤ 1
5		eqid 2736	. . . 4 ⊢ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ))
6	4, 5	pm3.2i 471	. . 3 ⊢ ((normℎ‘0ℎ) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ)))
7		fveq2 6825	. . . . . 6 ⊢ (𝑦 = 0ℎ → (normℎ‘𝑦) = (normℎ‘0ℎ))
8	7	breq1d 5102	. . . . 5 ⊢ (𝑦 = 0ℎ → ((normℎ‘𝑦) ≤ 1 ↔ (normℎ‘0ℎ) ≤ 1))
9		2fveq3 6830	. . . . . 6 ⊢ (𝑦 = 0ℎ → (normℎ‘(𝑇‘𝑦)) = (normℎ‘(𝑇‘0ℎ)))
10	9	eqeq2d 2747	. . . . 5 ⊢ (𝑦 = 0ℎ → ((normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)) ↔ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ))))
11	8, 10	anbi12d 631	. . . 4 ⊢ (𝑦 = 0ℎ → (((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))) ↔ ((normℎ‘0ℎ) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘0ℎ)))))
12	11	rspcev 3570	. . 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 689	. 2 ⊢ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)))
14		fvex 6838	. . 3 ⊢ (normℎ‘(𝑇‘0ℎ)) ∈ V
15		eqeq1 2740	. . . . 5 ⊢ (𝑥 = (normℎ‘(𝑇‘0ℎ)) → (𝑥 = (normℎ‘(𝑇‘𝑦)) ↔ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦))))
16	15	anbi2d 629	. . . 4 ⊢ (𝑥 = (normℎ‘(𝑇‘0ℎ)) → (((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦))) ↔ ((normℎ‘𝑦) ≤ 1 ∧ (normℎ‘(𝑇‘0ℎ)) = (normℎ‘(𝑇‘𝑦)))))
17	16	rexbidv 3171	. . 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 3619	. 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 230	1 ⊢ (normℎ‘(𝑇‘0ℎ)) ∈ {𝑥 ∣ ∃𝑦 ∈ ℋ ((normℎ‘𝑦) ≤ 1 ∧ 𝑥 = (normℎ‘(𝑇‘𝑦)))}

Syntax hints:   ∧ wa 396   = wceq 1540   ∈ wcel 2105  {cab 2713  ∃wrex 3070   class class class wbr 5092  ‘cfv 6479  0cc0 10972  1c1 10973   ≤ cle 11111   ℋchba 29569  norm_ℎcno 29573  0_ℎc0v 29574

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1912  ax-6 1970  ax-7 2010  ax-8 2107  ax-9 2115  ax-10 2136  ax-11 2153  ax-12 2170  ax-ext 2707  ax-sep 5243  ax-nul 5250  ax-pow 5308  ax-pr 5372  ax-un 7650  ax-cnex 11028  ax-resscn 11029  ax-1cn 11030  ax-icn 11031  ax-addcl 11032  ax-addrcl 11033  ax-mulcl 11034  ax-mulrcl 11035  ax-mulcom 11036  ax-addass 11037  ax-mulass 11038  ax-distr 11039  ax-i2m1 11040  ax-1ne0 11041  ax-1rid 11042  ax-rnegex 11043  ax-rrecex 11044  ax-cnre 11045  ax-pre-lttri 11046  ax-pre-lttrn 11047  ax-pre-ltadd 11048  ax-pre-mulgt0 11049  ax-hv0cl 29653  ax-hvmul0 29660  ax-hfi 29729  ax-his3 29734

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1781  df-nf 1785  df-sb 2067  df-mo 2538  df-eu 2567  df-clab 2714  df-cleq 2728  df-clel 2814  df-nfc 2886  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-rmo 3349  df-reu 3350  df-rab 3404  df-v 3443  df-sbc 3728  df-csb 3844  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3917  df-nul 4270  df-if 4474  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4853  df-iun 4943  df-br 5093  df-opab 5155  df-mpt 5176  df-tr 5210  df-id 5518  df-eprel 5524  df-po 5532  df-so 5533  df-fr 5575  df-we 5577  df-xp 5626  df-rel 5627  df-cnv 5628  df-co 5629  df-dm 5630  df-rn 5631  df-res 5632  df-ima 5633  df-pred 6238  df-ord 6305  df-on 6306  df-lim 6307  df-suc 6308  df-iota 6431  df-fun 6481  df-fn 6482  df-f 6483  df-f1 6484  df-fo 6485  df-f1o 6486  df-fv 6487  df-riota 7293  df-ov 7340  df-oprab 7341  df-mpo 7342  df-om 7781  df-2nd 7900  df-frecs 8167  df-wrecs 8198  df-recs 8272  df-rdg 8311  df-er 8569  df-en 8805  df-dom 8806  df-sdom 8807  df-pnf 11112  df-mnf 11113  df-xr 11114  df-ltxr 11115  df-le 11116  df-sub 11308  df-neg 11309  df-div 11734  df-nn 12075  df-2 12137  df-n0 12335  df-z 12421  df-uz 12684  df-rp 12832  df-seq 13823  df-exp 13884  df-cj 14909  df-re 14910  df-im 14911  df-sqrt 15045  df-hnorm 29618

This theorem is referenced by:  nmoprepnf  30517