Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fourierdlem13 | Structured version Visualization version GIF version |
Description: Value of 𝑉 in terms of value of 𝑄. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
fourierdlem13.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
fourierdlem13.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
fourierdlem13.x | ⊢ (𝜑 → 𝑋 ∈ ℝ) |
fourierdlem13.p | ⊢ 𝑃 = (𝑚 ∈ ℕ ↦ {𝑝 ∈ (ℝ ↑m (0...𝑚)) ∣ (((𝑝‘0) = (𝐴 + 𝑋) ∧ (𝑝‘𝑚) = (𝐵 + 𝑋)) ∧ ∀𝑖 ∈ (0..^𝑚)(𝑝‘𝑖) < (𝑝‘(𝑖 + 1)))}) |
fourierdlem13.m | ⊢ (𝜑 → 𝑀 ∈ ℕ) |
fourierdlem13.v | ⊢ (𝜑 → 𝑉 ∈ (𝑃‘𝑀)) |
fourierdlem13.i | ⊢ (𝜑 → 𝐼 ∈ (0...𝑀)) |
fourierdlem13.q | ⊢ 𝑄 = (𝑖 ∈ (0...𝑀) ↦ ((𝑉‘𝑖) − 𝑋)) |
Ref | Expression |
---|---|
fourierdlem13 | ⊢ (𝜑 → ((𝑄‘𝐼) = ((𝑉‘𝐼) − 𝑋) ∧ (𝑉‘𝐼) = (𝑋 + (𝑄‘𝐼)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fourierdlem13.q | . . . 4 ⊢ 𝑄 = (𝑖 ∈ (0...𝑀) ↦ ((𝑉‘𝑖) − 𝑋)) | |
2 | 1 | a1i 11 | . . 3 ⊢ (𝜑 → 𝑄 = (𝑖 ∈ (0...𝑀) ↦ ((𝑉‘𝑖) − 𝑋))) |
3 | simpr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 = 𝐼) → 𝑖 = 𝐼) | |
4 | 3 | fveq2d 6760 | . . . 4 ⊢ ((𝜑 ∧ 𝑖 = 𝐼) → (𝑉‘𝑖) = (𝑉‘𝐼)) |
5 | 4 | oveq1d 7270 | . . 3 ⊢ ((𝜑 ∧ 𝑖 = 𝐼) → ((𝑉‘𝑖) − 𝑋) = ((𝑉‘𝐼) − 𝑋)) |
6 | fourierdlem13.i | . . 3 ⊢ (𝜑 → 𝐼 ∈ (0...𝑀)) | |
7 | fourierdlem13.v | . . . . . . . 8 ⊢ (𝜑 → 𝑉 ∈ (𝑃‘𝑀)) | |
8 | fourierdlem13.m | . . . . . . . . 9 ⊢ (𝜑 → 𝑀 ∈ ℕ) | |
9 | fourierdlem13.p | . . . . . . . . . 10 ⊢ 𝑃 = (𝑚 ∈ ℕ ↦ {𝑝 ∈ (ℝ ↑m (0...𝑚)) ∣ (((𝑝‘0) = (𝐴 + 𝑋) ∧ (𝑝‘𝑚) = (𝐵 + 𝑋)) ∧ ∀𝑖 ∈ (0..^𝑚)(𝑝‘𝑖) < (𝑝‘(𝑖 + 1)))}) | |
10 | 9 | fourierdlem2 43540 | . . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → (𝑉 ∈ (𝑃‘𝑀) ↔ (𝑉 ∈ (ℝ ↑m (0...𝑀)) ∧ (((𝑉‘0) = (𝐴 + 𝑋) ∧ (𝑉‘𝑀) = (𝐵 + 𝑋)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑉‘𝑖) < (𝑉‘(𝑖 + 1)))))) |
11 | 8, 10 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → (𝑉 ∈ (𝑃‘𝑀) ↔ (𝑉 ∈ (ℝ ↑m (0...𝑀)) ∧ (((𝑉‘0) = (𝐴 + 𝑋) ∧ (𝑉‘𝑀) = (𝐵 + 𝑋)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑉‘𝑖) < (𝑉‘(𝑖 + 1)))))) |
12 | 7, 11 | mpbid 231 | . . . . . . 7 ⊢ (𝜑 → (𝑉 ∈ (ℝ ↑m (0...𝑀)) ∧ (((𝑉‘0) = (𝐴 + 𝑋) ∧ (𝑉‘𝑀) = (𝐵 + 𝑋)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑉‘𝑖) < (𝑉‘(𝑖 + 1))))) |
13 | 12 | simpld 494 | . . . . . 6 ⊢ (𝜑 → 𝑉 ∈ (ℝ ↑m (0...𝑀))) |
14 | elmapi 8595 | . . . . . 6 ⊢ (𝑉 ∈ (ℝ ↑m (0...𝑀)) → 𝑉:(0...𝑀)⟶ℝ) | |
15 | 13, 14 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝑉:(0...𝑀)⟶ℝ) |
16 | 15, 6 | ffvelrnd 6944 | . . . 4 ⊢ (𝜑 → (𝑉‘𝐼) ∈ ℝ) |
17 | fourierdlem13.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ ℝ) | |
18 | 16, 17 | resubcld 11333 | . . 3 ⊢ (𝜑 → ((𝑉‘𝐼) − 𝑋) ∈ ℝ) |
19 | 2, 5, 6, 18 | fvmptd 6864 | . 2 ⊢ (𝜑 → (𝑄‘𝐼) = ((𝑉‘𝐼) − 𝑋)) |
20 | 19 | oveq2d 7271 | . . 3 ⊢ (𝜑 → (𝑋 + (𝑄‘𝐼)) = (𝑋 + ((𝑉‘𝐼) − 𝑋))) |
21 | 17 | recnd 10934 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ ℂ) |
22 | 16 | recnd 10934 | . . . 4 ⊢ (𝜑 → (𝑉‘𝐼) ∈ ℂ) |
23 | 21, 22 | pncan3d 11265 | . . 3 ⊢ (𝜑 → (𝑋 + ((𝑉‘𝐼) − 𝑋)) = (𝑉‘𝐼)) |
24 | 20, 23 | eqtr2d 2779 | . 2 ⊢ (𝜑 → (𝑉‘𝐼) = (𝑋 + (𝑄‘𝐼))) |
25 | 19, 24 | jca 511 | 1 ⊢ (𝜑 → ((𝑄‘𝐼) = ((𝑉‘𝐼) − 𝑋) ∧ (𝑉‘𝐼) = (𝑋 + (𝑄‘𝐼)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∀wral 3063 {crab 3067 class class class wbr 5070 ↦ cmpt 5153 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ↑m cmap 8573 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 < clt 10940 − cmin 11135 ℕcn 11903 ...cfz 13168 ..^cfzo 13311 |
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 |
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-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-1st 7804 df-2nd 7805 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-ltxr 10945 df-sub 11137 df-neg 11138 |
This theorem is referenced by: fourierdlem72 43609 fourierdlem103 43640 fourierdlem104 43641 |
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