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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 14808 | . . . . . . . 8 ⊢ (∗‘𝑆) ∈ ℂ |
4 | normlem1.2 | . . . . . . . . 9 ⊢ 𝐹 ∈ ℋ | |
5 | normlem1.3 | . . . . . . . . 9 ⊢ 𝐺 ∈ ℋ | |
6 | 4, 5 | hicli 29344 | . . . . . . . 8 ⊢ (𝐹 ·ih 𝐺) ∈ ℂ |
7 | 3, 6 | mulcli 10913 | . . . . . . 7 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) ∈ ℂ |
8 | 5, 4 | hicli 29344 | . . . . . . . 8 ⊢ (𝐺 ·ih 𝐹) ∈ ℂ |
9 | 2, 8 | mulcli 10913 | . . . . . . 7 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) ∈ ℂ |
10 | 7, 9 | cjaddi 14827 | . . . . . 6 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = ((∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) + (∗‘(𝑆 · (𝐺 ·ih 𝐹)))) |
11 | 2 | cjcji 14810 | . . . . . . . . . 10 ⊢ (∗‘(∗‘𝑆)) = 𝑆 |
12 | 11 | eqcomi 2747 | . . . . . . . . 9 ⊢ 𝑆 = (∗‘(∗‘𝑆)) |
13 | 5, 4 | his1i 29363 | . . . . . . . . 9 ⊢ (𝐺 ·ih 𝐹) = (∗‘(𝐹 ·ih 𝐺)) |
14 | 12, 13 | oveq12i 7267 | . . . . . . . 8 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) = ((∗‘(∗‘𝑆)) · (∗‘(𝐹 ·ih 𝐺))) |
15 | 3, 6 | cjmuli 14828 | . . . . . . . 8 ⊢ (∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) = ((∗‘(∗‘𝑆)) · (∗‘(𝐹 ·ih 𝐺))) |
16 | 14, 15 | eqtr4i 2769 | . . . . . . 7 ⊢ (𝑆 · (𝐺 ·ih 𝐹)) = (∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
17 | 4, 5 | his1i 29363 | . . . . . . . . 9 ⊢ (𝐹 ·ih 𝐺) = (∗‘(𝐺 ·ih 𝐹)) |
18 | 17 | oveq2i 7266 | . . . . . . . 8 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) = ((∗‘𝑆) · (∗‘(𝐺 ·ih 𝐹))) |
19 | 2, 8 | cjmuli 14828 | . . . . . . . 8 ⊢ (∗‘(𝑆 · (𝐺 ·ih 𝐹))) = ((∗‘𝑆) · (∗‘(𝐺 ·ih 𝐹))) |
20 | 18, 19 | eqtr4i 2769 | . . . . . . 7 ⊢ ((∗‘𝑆) · (𝐹 ·ih 𝐺)) = (∗‘(𝑆 · (𝐺 ·ih 𝐹))) |
21 | 16, 20 | oveq12i 7267 | . . . . . 6 ⊢ ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) = ((∗‘((∗‘𝑆) · (𝐹 ·ih 𝐺))) + (∗‘(𝑆 · (𝐺 ·ih 𝐹)))) |
22 | 10, 21 | eqtr4i 2769 | . . . . 5 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
23 | 7, 9 | addcomi 11096 | . . . . 5 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) = ((𝑆 · (𝐺 ·ih 𝐹)) + ((∗‘𝑆) · (𝐹 ·ih 𝐺))) |
24 | 22, 23 | eqtr4i 2769 | . . . 4 ⊢ (∗‘(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹)))) = (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) |
25 | 7, 9 | addcli 10912 | . . . . 5 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℂ |
26 | 25 | cjrebi 14813 | . . . 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 230 | . . 3 ⊢ (((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℝ |
28 | 27 | renegcli 11212 | . 2 ⊢ -(((∗‘𝑆) · (𝐹 ·ih 𝐺)) + (𝑆 · (𝐺 ·ih 𝐹))) ∈ ℝ |
29 | 1, 28 | eqeltri 2835 | 1 ⊢ 𝐵 ∈ ℝ |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 ∈ wcel 2108 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ℝcr 10801 + caddc 10805 · cmul 10807 -cneg 11136 ∗ccj 14735 ℋchba 29182 ·ih csp 29185 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-hfi 29342 ax-his1 29345 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-po 5494 df-so 5495 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-2 11966 df-cj 14738 df-re 14739 df-im 14740 |
This theorem is referenced by: normlem3 29375 normlem6 29378 normlem7 29379 norm-ii-i 29400 |
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