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Mirrors > Home > HSE Home > Th. List > normlem2 | Structured version Visualization version GIF version |
Description: Lemma used to derive properties of norm. Part of Theorem 3.3(ii) of [Beran] p. 97. (Contributed by NM, 27-Jul-1999.) (New usage is discouraged.) |
Ref | Expression |
---|---|
normlem1.1 | ⊢ 𝑆 ∈ ℂ |
normlem1.2 | ⊢ 𝐹 ∈ ℋ |
normlem1.3 | ⊢ 𝐺 ∈ ℋ |
normlem2.4 | ⊢ 𝐵 = -(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) |
Ref | Expression |
---|---|
normlem2 | ⊢ 𝐵 ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | normlem2.4 | . 2 ⊢ 𝐵 = -(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) | |
2 | normlem1.1 | . . . . . . . . 9 ⊢ 𝑆 ∈ ℂ | |
3 | 2 | cjcli 14520 | . . . . . . . 8 ⊢ (∗‘𝑆) ∈ ℂ |
4 | normlem1.2 | . . . . . . . . 9 ⊢ 𝐹 ∈ ℋ | |
5 | normlem1.3 | . . . . . . . . 9 ⊢ 𝐺 ∈ ℋ | |
6 | 4, 5 | hicli 28864 | . . . . . . . 8 ⊢ (𝐹 ·ih 𝐺) ∈ ℂ |
7 | 3, 6 | mulcli 10637 | . . . . . . 7 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) ∈ ℂ |
8 | 5, 4 | hicli 28864 | . . . . . . . 8 ⊢ (𝐺 ·ih 𝐹) ∈ ℂ |
9 | 2, 8 | mulcli 10637 | . . . . . . 7 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) ∈ ℂ |
10 | 7, 9 | cjaddi 14539 | . . . . . 6 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = ((∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) + (∗‘(𝑆 · (𝐺 ·ih 𝐹)))) |
11 | 2 | cjcji 14522 | . . . . . . . . . 10 ⊢ (∗‘(∗‘𝑆)) = 𝑆 |
12 | 11 | eqcomi 2807 | . . . . . . . . 9 ⊢ 𝑆 = (∗‘(∗‘𝑆)) |
13 | 5, 4 | his1i 28883 | . . . . . . . . 9 ⊢ (𝐺 ·ih 𝐹) = (∗‘(𝐹 ·ih 𝐺)) |
14 | 12, 13 | oveq12i 7147 | . . . . . . . 8 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) = ((∗‘(∗‘𝑆)) · (∗‘(𝐹 ·ih 𝐺))) |
15 | 3, 6 | cjmuli 14540 | . . . . . . . 8 ⊢ (∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) = ((∗‘(∗‘𝑆)) · (∗‘(𝐹 ·ih 𝐺))) |
16 | 14, 15 | eqtr4i 2824 | . . . . . . 7 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) = (∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
17 | 4, 5 | his1i 28883 | . . . . . . . . 9 ⊢ (𝐹 ·ih 𝐺) = (∗‘(𝐺 ·ih 𝐹)) |
18 | 17 | oveq2i 7146 | . . . . . . . 8 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) = ((∗‘𝑆) · (∗‘(𝐺 ·ih 𝐹))) |
19 | 2, 8 | cjmuli 14540 | . . . . . . . 8 ⊢ (∗‘(𝑆 · (𝐺 ·ih 𝐹))) = ((∗‘𝑆) · (∗‘(𝐺 ·ih 𝐹))) |
20 | 18, 19 | eqtr4i 2824 | . . . . . . 7 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) = (∗‘(𝑆 · (𝐺 ·ih 𝐹))) |
21 | 16, 20 | oveq12i 7147 | . . . . . 6 ⊢ ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) = ((∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) + (∗‘(𝑆 · (𝐺 ·ih 𝐹)))) |
22 | 10, 21 | eqtr4i 2824 | . . . . 5 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
23 | 7, 9 | addcomi 10820 | . . . . 5 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) = ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
24 | 22, 23 | eqtr4i 2824 | . . . 4 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) |
25 | 7, 9 | addcli 10636 | . . . . 5 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℂ |
26 | 25 | cjrebi 14525 | . . . 4 ⊢ ((((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℝ ↔ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) |
27 | 24, 26 | mpbir 234 | . . 3 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℝ |
28 | 27 | renegcli 10936 | . 2 ⊢ -(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℝ |
29 | 1, 28 | eqeltri 2886 | 1 ⊢ 𝐵 ∈ ℝ |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ∈ wcel 2111 ‘cfv 6324 (class class class)co 7135 ℂcc 10524 ℝcr 10525 + caddc 10529 · cmul 10531 -cneg 10860 ∗ccj 14447 ℋchba 28702 ·ih csp 28705 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-hfi 28862 ax-his1 28865 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-po 5438 df-so 5439 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-2 11688 df-cj 14450 df-re 14451 df-im 14452 |
This theorem is referenced by: normlem3 28895 normlem6 28898 normlem7 28899 norm-ii-i 28920 |
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