Theorem nmoo0 27030

Description: The operator norm of the zero operator. (Contributed by NM, 27-Nov-2007.) (New usage is discouraged.)

Hypotheses

Ref	Expression
nmoo0.3	⊢ 𝑁 = (𝑈 normOpOLD 𝑊)
nmoo0.0	⊢ 𝑍 = (𝑈 0op 𝑊)

Assertion

Ref	Expression
nmoo0	⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑁‘𝑍) = 0)

Proof of Theorem nmoo0

Dummy variables 𝑥 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2610	. . . . 5 ⊢ (BaseSet‘𝑈) = (BaseSet‘𝑈)
2		eqid 2610	. . . . 5 ⊢ (BaseSet‘𝑊) = (BaseSet‘𝑊)
3		nmoo0.0	. . . . 5 ⊢ 𝑍 = (𝑈 0op 𝑊)
4	1, 2, 3	0oo 27028	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → 𝑍:(BaseSet‘𝑈)⟶(BaseSet‘𝑊))
5		eqid 2610	. . . . 5 ⊢ (normCV‘𝑈) = (normCV‘𝑈)
6		eqid 2610	. . . . 5 ⊢ (normCV‘𝑊) = (normCV‘𝑊)
7		nmoo0.3	. . . . 5 ⊢ 𝑁 = (𝑈 normOpOLD 𝑊)
8	1, 2, 5, 6, 7	nmooval 27002	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑍:(BaseSet‘𝑈)⟶(BaseSet‘𝑊)) → (𝑁‘𝑍) = sup({𝑥 ∣ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))}, ℝ*, < ))
9	4, 8	mpd3an3 1417	. . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑁‘𝑍) = sup({𝑥 ∣ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))}, ℝ*, < ))
10		df-sn 4126	. . . . 5 ⊢ {0} = {𝑥 ∣ 𝑥 = 0}
11		eqid 2610	. . . . . . . . . . 11 ⊢ (0vec‘𝑈) = (0vec‘𝑈)
12	1, 11	nvzcl 26873	. . . . . . . . . 10 ⊢ (𝑈 ∈ NrmCVec → (0vec‘𝑈) ∈ (BaseSet‘𝑈))
13	11, 5	nvz0 26907	. . . . . . . . . . 11 ⊢ (𝑈 ∈ NrmCVec → ((normCV‘𝑈)‘(0vec‘𝑈)) = 0)
14		0le1 10430	. . . . . . . . . . 11 ⊢ 0 ≤ 1
15	13, 14	syl6eqbr 4622	. . . . . . . . . 10 ⊢ (𝑈 ∈ NrmCVec → ((normCV‘𝑈)‘(0vec‘𝑈)) ≤ 1)
16		fveq2 6103	. . . . . . . . . . . 12 ⊢ (𝑧 = (0vec‘𝑈) → ((normCV‘𝑈)‘𝑧) = ((normCV‘𝑈)‘(0vec‘𝑈)))
17	16	breq1d 4593	. . . . . . . . . . 11 ⊢ (𝑧 = (0vec‘𝑈) → (((normCV‘𝑈)‘𝑧) ≤ 1 ↔ ((normCV‘𝑈)‘(0vec‘𝑈)) ≤ 1))
18	17	rspcev 3282	. . . . . . . . . 10 ⊢ (((0vec‘𝑈) ∈ (BaseSet‘𝑈) ∧ ((normCV‘𝑈)‘(0vec‘𝑈)) ≤ 1) → ∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1)
19	12, 15, 18	syl2anc 691	. . . . . . . . 9 ⊢ (𝑈 ∈ NrmCVec → ∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1)
20	19	biantrurd 528	. . . . . . . 8 ⊢ (𝑈 ∈ NrmCVec → (𝑥 = 0 ↔ (∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0)))
21	20	adantr 480	. . . . . . 7 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑥 = 0 ↔ (∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0)))
22		eqid 2610	. . . . . . . . . . . . . . 15 ⊢ (0vec‘𝑊) = (0vec‘𝑊)
23	1, 22, 3	0oval 27027	. . . . . . . . . . . . . 14 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑧 ∈ (BaseSet‘𝑈)) → (𝑍‘𝑧) = (0vec‘𝑊))
24	23	3expa 1257	. . . . . . . . . . . . 13 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → (𝑍‘𝑧) = (0vec‘𝑊))
25	24	fveq2d 6107	. . . . . . . . . . . 12 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → ((normCV‘𝑊)‘(𝑍‘𝑧)) = ((normCV‘𝑊)‘(0vec‘𝑊)))
26	22, 6	nvz0 26907	. . . . . . . . . . . . 13 ⊢ (𝑊 ∈ NrmCVec → ((normCV‘𝑊)‘(0vec‘𝑊)) = 0)
27	26	ad2antlr 759	. . . . . . . . . . . 12 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → ((normCV‘𝑊)‘(0vec‘𝑊)) = 0)
28	25, 27	eqtrd 2644	. . . . . . . . . . 11 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → ((normCV‘𝑊)‘(𝑍‘𝑧)) = 0)
29	28	eqeq2d 2620	. . . . . . . . . 10 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → (𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)) ↔ 𝑥 = 0))
30	29	anbi2d 736	. . . . . . . . 9 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) ∧ 𝑧 ∈ (BaseSet‘𝑈)) → ((((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧))) ↔ (((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0)))
31	30	rexbidva 3031	. . . . . . . 8 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧))) ↔ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0)))
32		r19.41v 3070	. . . . . . . 8 ⊢ (∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0) ↔ (∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0))
33	31, 32	syl6rbb 276	. . . . . . 7 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → ((∃𝑧 ∈ (BaseSet‘𝑈)((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = 0) ↔ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))))
34	21, 33	bitrd 267	. . . . . 6 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑥 = 0 ↔ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))))
35	34	abbidv 2728	. . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → {𝑥 ∣ 𝑥 = 0} = {𝑥 ∣ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))})
36	10, 35	syl5req 2657	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → {𝑥 ∣ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))} = {0})
37	36	supeq1d 8235	. . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → sup({𝑥 ∣ ∃𝑧 ∈ (BaseSet‘𝑈)(((normCV‘𝑈)‘𝑧) ≤ 1 ∧ 𝑥 = ((normCV‘𝑊)‘(𝑍‘𝑧)))}, ℝ*, < ) = sup({0}, ℝ*, < ))
38	9, 37	eqtrd 2644	. 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑁‘𝑍) = sup({0}, ℝ*, < ))
39		xrltso 11850	. . 3 ⊢ < Or ℝ*
40		0xr 9965	. . 3 ⊢ 0 ∈ ℝ*
41		supsn 8261	. . 3 ⊢ (( < Or ℝ* ∧ 0 ∈ ℝ*) → sup({0}, ℝ*, < ) = 0)
42	39, 40, 41	mp2an 704	. 2 ⊢ sup({0}, ℝ*, < ) = 0
43	38, 42	syl6eq 2660	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec) → (𝑁‘𝑍) = 0)

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  {cab 2596  ∃wrex 2897  {csn 4125   class class class wbr 4583   Or wor 4958  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  supcsup 8229  0cc0 9815  1c1 9816  ℝ^*cxr 9952   < clt 9953   ≤ cle 9954  NrmCVeccnv 26823  BaseSetcba 26825  0_veccn0v 26827  norm_CVcnmcv 26829   normOp_OLD cnmoo 26980   0_op c0o 26982

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-er 7629  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-sup 8231  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-n0 11170  df-z 11255  df-uz 11564  df-rp 11709  df-seq 12664  df-exp 12723  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-grpo 26731  df-gid 26732  df-ginv 26733  df-ablo 26783  df-vc 26798  df-nv 26831  df-va 26834  df-ba 26835  df-sm 26836  df-0v 26837  df-nmcv 26839  df-nmoo 26984  df-0o 26986

This theorem is referenced by:  0blo  27031  nmlno0lem  27032