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Mirrors > Home > MPE Home > Th. List > efif1olem3 | Structured version Visualization version GIF version |
Description: Lemma for efif1o 25250. (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 488 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ 𝐶) | |
2 | efif1o.2 | . . . . . . 7 ⊢ 𝐶 = (◡abs “ {1}) | |
3 | 1, 2 | eleqtrdi 2862 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ (◡abs “ {1})) |
4 | absf 14758 | . . . . . . 7 ⊢ abs:ℂ⟶ℝ | |
5 | ffn 6503 | . . . . . . 7 ⊢ (abs:ℂ⟶ℝ → abs Fn ℂ) | |
6 | fniniseg 6826 | . . . . . . 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 221 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝑥 ∈ ℂ ∧ (abs‘𝑥) = 1)) |
9 | 8 | simpld 498 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝑥 ∈ ℂ) |
10 | 9 | sqrtcld 14858 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (√‘𝑥) ∈ ℂ) |
11 | 10 | imcld 14615 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ∈ ℝ) |
12 | absimle 14730 | . . . . . 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 14860 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((√‘𝑥)↑2) = 𝑥) |
15 | 14 | fveq2d 6667 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘((√‘𝑥)↑2)) = (abs‘𝑥)) |
16 | 2nn0 11964 | . . . . . . . . 9 ⊢ 2 ∈ ℕ0 | |
17 | absexp 14725 | . . . . . . . . 9 ⊢ (((√‘𝑥) ∈ ℂ ∧ 2 ∈ ℕ0) → (abs‘((√‘𝑥)↑2)) = ((abs‘(√‘𝑥))↑2)) | |
18 | 10, 16, 17 | sylancl 589 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘((√‘𝑥)↑2)) = ((abs‘(√‘𝑥))↑2)) |
19 | 8 | simprd 499 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘𝑥) = 1) |
20 | 15, 18, 19 | 3eqtr3d 2801 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(√‘𝑥))↑2) = 1) |
21 | sq1 13621 | . . . . . . 7 ⊢ (1↑2) = 1 | |
22 | 20, 21 | eqtr4di 2811 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(√‘𝑥))↑2) = (1↑2)) |
23 | 10 | abscld 14857 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(√‘𝑥)) ∈ ℝ) |
24 | 10 | absge0d 14865 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → 0 ≤ (abs‘(√‘𝑥))) |
25 | 1re 10692 | . . . . . . . 8 ⊢ 1 ∈ ℝ | |
26 | 0le1 11214 | . . . . . . . 8 ⊢ 0 ≤ 1 | |
27 | sq11 13559 | . . . . . . . 8 ⊢ ((((abs‘(√‘𝑥)) ∈ ℝ ∧ 0 ≤ (abs‘(√‘𝑥))) ∧ (1 ∈ ℝ ∧ 0 ≤ 1)) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) | |
28 | 25, 26, 27 | mpanr12 704 | . . . . . . 7 ⊢ (((abs‘(√‘𝑥)) ∈ ℝ ∧ 0 ≤ (abs‘(√‘𝑥))) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) |
29 | 23, 24, 28 | syl2anc 587 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (((abs‘(√‘𝑥))↑2) = (1↑2) ↔ (abs‘(√‘𝑥)) = 1)) |
30 | 22, 29 | mpbid 235 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(√‘𝑥)) = 1) |
31 | 13, 30 | breqtrd 5062 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (abs‘(ℑ‘(√‘𝑥))) ≤ 1) |
32 | absle 14736 | . . . . 5 ⊢ (((ℑ‘(√‘𝑥)) ∈ ℝ ∧ 1 ∈ ℝ) → ((abs‘(ℑ‘(√‘𝑥))) ≤ 1 ↔ (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1))) | |
33 | 11, 25, 32 | sylancl 589 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → ((abs‘(ℑ‘(√‘𝑥))) ≤ 1 ↔ (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1))) |
34 | 31, 33 | mpbid 235 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (-1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1)) |
35 | 34 | simpld 498 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → -1 ≤ (ℑ‘(√‘𝑥))) |
36 | 34 | simprd 499 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ≤ 1) |
37 | neg1rr 11802 | . . 3 ⊢ -1 ∈ ℝ | |
38 | 37, 25 | elicc2i 12858 | . 2 ⊢ ((ℑ‘(√‘𝑥)) ∈ (-1[,]1) ↔ ((ℑ‘(√‘𝑥)) ∈ ℝ ∧ -1 ≤ (ℑ‘(√‘𝑥)) ∧ (ℑ‘(√‘𝑥)) ≤ 1)) |
39 | 11, 35, 36, 38 | syl3anbrc 1340 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (ℑ‘(√‘𝑥)) ∈ (-1[,]1)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 {csn 4525 class class class wbr 5036 ↦ cmpt 5116 ◡ccnv 5527 “ cima 5531 Fn wfn 6335 ⟶wf 6336 ‘cfv 6340 (class class class)co 7156 ℂcc 10586 ℝcr 10587 0cc0 10588 1c1 10589 ici 10590 · cmul 10593 ≤ cle 10727 -cneg 10922 2c2 11742 ℕ0cn0 11947 [,]cicc 12795 ↑cexp 13492 ℑcim 14518 √csqrt 14653 abscabs 14654 expce 15476 |
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 2729 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-cnex 10644 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 ax-pre-sup 10666 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-pss 3879 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4802 df-iun 4888 df-br 5037 df-opab 5099 df-mpt 5117 df-tr 5143 df-id 5434 df-eprel 5439 df-po 5447 df-so 5448 df-fr 5487 df-we 5489 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-pred 6131 df-ord 6177 df-on 6178 df-lim 6179 df-suc 6180 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7586 df-2nd 7700 df-wrecs 7963 df-recs 8024 df-rdg 8062 df-er 8305 df-en 8541 df-dom 8542 df-sdom 8543 df-sup 8952 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-div 11349 df-nn 11688 df-2 11750 df-3 11751 df-n0 11948 df-z 12034 df-uz 12296 df-rp 12444 df-icc 12799 df-seq 13432 df-exp 13493 df-cj 14519 df-re 14520 df-im 14521 df-sqrt 14655 df-abs 14656 |
This theorem is referenced by: efif1olem4 25249 |
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