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Mirrors > Home > MPE Home > Th. List > efif1olem3 | Structured version Visualization version GIF version |
Description: Lemma for efif1o 25607. (Contributed by Mario Carneiro, 8-May-2015.) |
Ref | Expression |
---|---|
efif1o.1 | ⊢ 𝐹 = (𝑤 ∈ 𝐷 ↦ (exp‘(i · 𝑤))) |
efif1o.2 | ⊢ 𝐶 = (◡abs “ {1}) |
Ref | Expression |
---|---|
efif1olem3 | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ∈ (-1[,]1)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ 𝐶) | |
2 | efif1o.2 | . . . . . . 7 ⊢ 𝐶 = (◡abs “ {1}) | |
3 | 1, 2 | eleqtrdi 2849 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ (◡abs “ {1})) |
4 | absf 14977 | . . . . . . 7 ⊢ abs:ℂ⟶ℝ | |
5 | ffn 6584 | . . . . . . 7 ⊢ (abs:ℂ⟶ℝ → abs Fn ℂ) | |
6 | fniniseg 6919 | . . . . . . 7 ⊢ (abs Fn ℂ → (𝑥 ∈ (◡abs “ {1}) ↔ (𝑥 ∈ ℂ ∧ (abs‘𝑥) = 1))) | |
7 | 4, 5, 6 | mp2b 10 | . . . . . 6 ⊢ (𝑥 ∈ (◡abs “ {1}) ↔ (𝑥 ∈ ℂ ∧ (abs‘𝑥) = 1)) |
8 | 3, 7 | sylib 217 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑥 ∈ ℂ ∧ (abs‘𝑥) = 1)) |
9 | 8 | simpld 494 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ ℂ) |
10 | 9 | sqrtcld 15077 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (√‘𝑥) ∈ ℂ) |
11 | 10 | imcld 14834 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ∈ ℝ) |
12 | absimle 14949 | . . . . . 6 ⊢ ((√‘𝑥) ∈ ℂ → (abs‘(ℑ‘(√‘𝑥))) ≤ (abs‘(√‘𝑥))) | |
13 | 10, 12 | syl 17 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(ℑ‘(√‘𝑥))) ≤ (abs‘(√‘𝑥))) |
14 | 9 | sqsqrtd 15079 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((√‘𝑥)↑2) = 𝑥) |
15 | 14 | fveq2d 6760 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘((√‘𝑥)↑2)) = (abs‘𝑥)) |
16 | 2nn0 12180 | . . . . . . . . 9 ⊢ 2 ∈ ℕ0 | |
17 | absexp 14944 | . . . . . . . . 9 ⊢ (((√‘𝑥) ∈ ℂ ∧ 2 ∈ ℕ0) → (abs‘((√‘𝑥)↑2)) = ((abs‘(√‘𝑥))↑2)) | |
18 | 10, 16, 17 | sylancl 585 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘((√‘𝑥)↑2)) = ((abs‘(√‘𝑥))↑2)) |
19 | 8 | simprd 495 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘𝑥) = 1) |
20 | 15, 18, 19 | 3eqtr3d 2786 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(√‘𝑥))↑2) = 1) |
21 | sq1 13840 | . . . . . . 7 ⊢ (1↑2) = 1 | |
22 | 20, 21 | eqtr4di 2797 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(√‘𝑥))↑2) = (1↑2)) |
23 | 10 | abscld 15076 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(√‘𝑥)) ∈ ℝ) |
24 | 10 | absge0d 15084 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 0 ≤ (abs‘(√‘𝑥))) |
25 | 1re 10906 | . . . . . . . 8 ⊢ 1 ∈ ℝ | |
26 | 0le1 11428 | . . . . . . . 8 ⊢ 0 ≤ 1 | |
27 | sq11 13778 | . . . . . . . 8 ⊢ ((((abs‘(√‘𝑥)) ∈ ℝ ∧ 0 ≤ (abs‘(√‘𝑥))) ∧ (1 ∈ ℝ ∧ 0 ≤ 1)) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) | |
28 | 25, 26, 27 | mpanr12 701 | . . . . . . 7 ⊢ (((abs‘(√‘𝑥)) ∈ ℝ ∧ 0 ≤ (abs‘(√‘𝑥))) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) |
29 | 23, 24, 28 | syl2anc 583 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) |
30 | 22, 29 | mpbid 231 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(√‘𝑥)) = 1) |
31 | 13, 30 | breqtrd 5096 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(ℑ‘(√‘𝑥))) ≤ 1) |
32 | absle 14955 | . . . . 5 ⊢ (((ℑ‘(√‘𝑥)) ∈ ℝ ∧ 1 ∈ ℝ) → ((abs‘(ℑ‘(√‘𝑥))) ≤ 1 ↔ (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1))) | |
33 | 11, 25, 32 | sylancl 585 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(ℑ‘(√‘𝑥))) ≤ 1 ↔ (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1))) |
34 | 31, 33 | mpbid 231 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1)) |
35 | 34 | simpld 494 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → -1 ≤ (ℑ‘(√‘𝑥))) |
36 | 34 | simprd 495 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ≤ 1) |
37 | neg1rr 12018 | . . 3 ⊢ -1 ∈ ℝ | |
38 | 37, 25 | elicc2i 13074 | . 2 ⊢ ((ℑ‘(√‘𝑥)) ∈ (-1[,]1) ↔ ((ℑ‘(√‘𝑥)) ∈ ℝ ∧ -1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1)) |
39 | 11, 35, 36, 38 | syl3anbrc 1341 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ∈ (-1[,]1)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 {csn 4558 class class class wbr 5070 ↦ cmpt 5153 ◡ccnv 5579 “ cima 5583 Fn wfn 6413 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ℝcr 10801 0cc0 10802 1c1 10803 ici 10804 · cmul 10807 ≤ cle 10941 -cneg 11136 2c2 11958 ℕ0cn0 12163 [,]cicc 13011 ↑cexp 13710 ℑcim 14737 √csqrt 14872 abscabs 14873 expce 15699 |
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-cnex 10858 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-pre-sup 10880 |
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-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 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-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 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-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-sup 9131 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-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-rp 12660 df-icc 13015 df-seq 13650 df-exp 13711 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 |
This theorem is referenced by: efif1olem4 25606 |
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