Theorem lnophm 32078

Description: A linear operator is Hermitian if 𝑥 ·_ih (𝑇‘𝑥) takes only real values. Remark in [ReedSimon] p. 195. (Contributed by NM, 24-Jan-2006.) (New usage is discouraged.)

Assertion

Ref	Expression
lnophm	⊢ ((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ) → 𝑇 ∈ HrmOp)

Distinct variable group:   𝑥,𝑇

Proof of Theorem lnophm

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eleq1 2823	. 2 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (𝑇 ∈ HrmOp ↔ if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ HrmOp))
2		eleq1 2823	. . . . . 6 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (𝑇 ∈ LinOp ↔ if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp))
3		id 22	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → 𝑥 = 𝑦)
4		fveq2 6829	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑇‘𝑥) = (𝑇‘𝑦))
5	3, 4	oveq12d 7374	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑥 ·ih (𝑇‘𝑥)) = (𝑦 ·ih (𝑇‘𝑦)))
6	5	eleq1d 2820	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ ↔ (𝑦 ·ih (𝑇‘𝑦)) ∈ ℝ))
7	6	cbvralvw 3213	. . . . . . 7 ⊢ (∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ ↔ ∀𝑦 ∈ ℋ (𝑦 ·ih (𝑇‘𝑦)) ∈ ℝ)
8		fveq1 6828	. . . . . . . . . 10 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (𝑇‘𝑦) = (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦))
9	8	oveq2d 7372	. . . . . . . . 9 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (𝑦 ·ih (𝑇‘𝑦)) = (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)))
10	9	eleq1d 2820	. . . . . . . 8 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → ((𝑦 ·ih (𝑇‘𝑦)) ∈ ℝ ↔ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ))
11	10	ralbidv 3158	. . . . . . 7 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (∀𝑦 ∈ ℋ (𝑦 ·ih (𝑇‘𝑦)) ∈ ℝ ↔ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ))
12	7, 11	bitrid 283	. . . . . 6 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ ↔ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ))
13	2, 12	anbi12d 633	. . . . 5 ⊢ (𝑇 = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → ((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ) ↔ (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ)))
14		eleq1 2823	. . . . . 6 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (( I ↾ ℋ) ∈ LinOp ↔ if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp))
15		fveq1 6828	. . . . . . . . 9 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (( I ↾ ℋ)‘𝑦) = (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦))
16	15	oveq2d 7372	. . . . . . . 8 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) = (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)))
17	16	eleq1d 2820	. . . . . . 7 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → ((𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ ↔ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ))
18	17	ralbidv 3158	. . . . . 6 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → (∀𝑦 ∈ ℋ (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ ↔ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ))
19	14, 18	anbi12d 633	. . . . 5 ⊢ (( I ↾ ℋ) = if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) → ((( I ↾ ℋ) ∈ LinOp ∧ ∀𝑦 ∈ ℋ (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ) ↔ (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ)))
20		idlnop 32051	. . . . . 6 ⊢ ( I ↾ ℋ) ∈ LinOp
21		fvresi 7117	. . . . . . . . 9 ⊢ (𝑦 ∈ ℋ → (( I ↾ ℋ)‘𝑦) = 𝑦)
22	21	oveq2d 7372	. . . . . . . 8 ⊢ (𝑦 ∈ ℋ → (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) = (𝑦 ·ih 𝑦))
23		hiidrcl 31154	. . . . . . . 8 ⊢ (𝑦 ∈ ℋ → (𝑦 ·ih 𝑦) ∈ ℝ)
24	22, 23	eqeltrd 2835	. . . . . . 7 ⊢ (𝑦 ∈ ℋ → (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ)
25	24	rgen 3051	. . . . . 6 ⊢ ∀𝑦 ∈ ℋ (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ
26	20, 25	pm3.2i 470	. . . . 5 ⊢ (( I ↾ ℋ) ∈ LinOp ∧ ∀𝑦 ∈ ℋ (𝑦 ·ih (( I ↾ ℋ)‘𝑦)) ∈ ℝ)
27	13, 19, 26	elimhyp 4522	. . . 4 ⊢ (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ)
28	27	simpli 483	. . 3 ⊢ if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ LinOp
29	27	simpri 485	. . 3 ⊢ ∀𝑦 ∈ ℋ (𝑦 ·ih (if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ))‘𝑦)) ∈ ℝ
30	28, 29	lnophmi 32077	. 2 ⊢ if((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ), 𝑇, ( I ↾ ℋ)) ∈ HrmOp
31	1, 30	dedth 4515	1 ⊢ ((𝑇 ∈ LinOp ∧ ∀𝑥 ∈ ℋ (𝑥 ·ih (𝑇‘𝑥)) ∈ ℝ) → 𝑇 ∈ HrmOp)

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1542   ∈ wcel 2114  ∀wral 3049  ifcif 4456   I cid 5514   ↾ cres 5622  ‘cfv 6487  (class class class)co 7356  ℝcr 11026   ℋchba 30978   ·_ih csp 30981  LinOpclo 31006  HrmOpcho 31009

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2184  ax-ext 2707  ax-rep 5201  ax-sep 5220  ax-nul 5230  ax-pow 5296  ax-pr 5364  ax-un 7678  ax-resscn 11084  ax-1cn 11085  ax-icn 11086  ax-addcl 11087  ax-addrcl 11088  ax-mulcl 11089  ax-mulrcl 11090  ax-mulcom 11091  ax-addass 11092  ax-mulass 11093  ax-distr 11094  ax-i2m1 11095  ax-1ne0 11096  ax-1rid 11097  ax-rnegex 11098  ax-rrecex 11099  ax-cnre 11100  ax-pre-lttri 11101  ax-pre-lttrn 11102  ax-pre-ltadd 11103  ax-pre-mulgt0 11104  ax-hilex 31058  ax-hfvadd 31059  ax-hvcom 31060  ax-hvass 31061  ax-hv0cl 31062  ax-hvaddid 31063  ax-hfvmul 31064  ax-hvmulid 31065  ax-hvmulass 31066  ax-hvdistr1 31067  ax-hvdistr2 31068  ax-hvmul0 31069  ax-hfi 31138  ax-his1 31141  ax-his2 31142  ax-his3 31143  ax-his4 31144

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2538  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2810  df-nfc 2884  df-ne 2931  df-nel 3035  df-ral 3050  df-rex 3060  df-rmo 3340  df-reu 3341  df-rab 3388  df-v 3429  df-sbc 3726  df-csb 3834  df-dif 3888  df-un 3890  df-in 3892  df-ss 3902  df-pss 3905  df-nul 4264  df-if 4457  df-pw 4533  df-sn 4558  df-pr 4560  df-op 4564  df-uni 4841  df-iun 4925  df-br 5075  df-opab 5137  df-mpt 5156  df-tr 5182  df-id 5515  df-eprel 5520  df-po 5528  df-so 5529  df-fr 5573  df-we 5575  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 6254  df-ord 6315  df-on 6316  df-lim 6317  df-suc 6318  df-iota 6443  df-fun 6489  df-fn 6490  df-f 6491  df-f1 6492  df-fo 6493  df-f1o 6494  df-fv 6495  df-riota 7313  df-ov 7359  df-oprab 7360  df-mpo 7361  df-om 7807  df-2nd 7932  df-frecs 8220  df-wrecs 8251  df-recs 8300  df-rdg 8338  df-er 8632  df-map 8764  df-en 8883  df-dom 8884  df-sdom 8885  df-pnf 11170  df-mnf 11171  df-xr 11172  df-ltxr 11173  df-le 11174  df-sub 11368  df-neg 11369  df-div 11797  df-nn 12164  df-2 12233  df-3 12234  df-4 12235  df-cj 15050  df-re 15051  df-im 15052  df-hvsub 31030  df-lnop 31900  df-unop 31902  df-hmop 31903

This theorem is referenced by: (None)