Mathbox for Asger C. Ipsen |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > knoppf | Structured version Visualization version GIF version |
Description: Knopp's function is a function. (Contributed by Asger C. Ipsen, 25-Aug-2021.) |
Ref | Expression |
---|---|
knoppf.t | ⊢ 𝑇 = (𝑥 ∈ ℝ ↦ (abs‘((⌊‘(𝑥 + (1 / 2))) − 𝑥))) |
knoppf.f | ⊢ 𝐹 = (𝑦 ∈ ℝ ↦ (𝑛 ∈ ℕ0 ↦ ((𝐶↑𝑛) · (𝑇‘(((2 · 𝑁)↑𝑛) · 𝑦))))) |
knoppf.w | ⊢ 𝑊 = (𝑤 ∈ ℝ ↦ Σ𝑖 ∈ ℕ0 ((𝐹‘𝑤)‘𝑖)) |
knoppf.c | ⊢ (𝜑 → 𝐶 ∈ (-1(,)1)) |
knoppf.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
Ref | Expression |
---|---|
knoppf | ⊢ (𝜑 → 𝑊:ℝ⟶ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0uz 12549 | . . 3 ⊢ ℕ0 = (ℤ≥‘0) | |
2 | 0zd 12261 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → 0 ∈ ℤ) | |
3 | eqidd 2739 | . . 3 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → ((𝐹‘𝑤)‘𝑖) = ((𝐹‘𝑤)‘𝑖)) | |
4 | knoppf.t | . . . 4 ⊢ 𝑇 = (𝑥 ∈ ℝ ↦ (abs‘((⌊‘(𝑥 + (1 / 2))) − 𝑥))) | |
5 | knoppf.f | . . . 4 ⊢ 𝐹 = (𝑦 ∈ ℝ ↦ (𝑛 ∈ ℕ0 ↦ ((𝐶↑𝑛) · (𝑇‘(((2 · 𝑁)↑𝑛) · 𝑦))))) | |
6 | knoppf.n | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
7 | 6 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → 𝑁 ∈ ℕ) |
8 | 7 | adantr 480 | . . . 4 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → 𝑁 ∈ ℕ) |
9 | knoppf.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ (-1(,)1)) | |
10 | 9 | knoppndvlem3 34621 | . . . . . . 7 ⊢ (𝜑 → (𝐶 ∈ ℝ ∧ (abs‘𝐶) < 1)) |
11 | 10 | simpld 494 | . . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℝ) |
12 | 11 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → 𝐶 ∈ ℝ) |
13 | 12 | adantr 480 | . . . 4 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → 𝐶 ∈ ℝ) |
14 | simpr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → 𝑤 ∈ ℝ) | |
15 | 14 | adantr 480 | . . . 4 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → 𝑤 ∈ ℝ) |
16 | simpr 484 | . . . 4 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → 𝑖 ∈ ℕ0) | |
17 | 4, 5, 8, 13, 15, 16 | knoppcnlem3 34602 | . . 3 ⊢ (((𝜑 ∧ 𝑤 ∈ ℝ) ∧ 𝑖 ∈ ℕ0) → ((𝐹‘𝑤)‘𝑖) ∈ ℝ) |
18 | knoppf.w | . . . . . 6 ⊢ 𝑊 = (𝑤 ∈ ℝ ↦ Σ𝑖 ∈ ℕ0 ((𝐹‘𝑤)‘𝑖)) | |
19 | fveq2 6756 | . . . . . . . . 9 ⊢ (𝑤 = 𝑧 → (𝐹‘𝑤) = (𝐹‘𝑧)) | |
20 | 19 | fveq1d 6758 | . . . . . . . 8 ⊢ (𝑤 = 𝑧 → ((𝐹‘𝑤)‘𝑖) = ((𝐹‘𝑧)‘𝑖)) |
21 | 20 | sumeq2sdv 15344 | . . . . . . 7 ⊢ (𝑤 = 𝑧 → Σ𝑖 ∈ ℕ0 ((𝐹‘𝑤)‘𝑖) = Σ𝑖 ∈ ℕ0 ((𝐹‘𝑧)‘𝑖)) |
22 | 21 | cbvmptv 5183 | . . . . . 6 ⊢ (𝑤 ∈ ℝ ↦ Σ𝑖 ∈ ℕ0 ((𝐹‘𝑤)‘𝑖)) = (𝑧 ∈ ℝ ↦ Σ𝑖 ∈ ℕ0 ((𝐹‘𝑧)‘𝑖)) |
23 | 18, 22 | eqtri 2766 | . . . . 5 ⊢ 𝑊 = (𝑧 ∈ ℝ ↦ Σ𝑖 ∈ ℕ0 ((𝐹‘𝑧)‘𝑖)) |
24 | 9 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → 𝐶 ∈ (-1(,)1)) |
25 | 4, 5, 23, 14, 24, 7 | knoppndvlem4 34622 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → seq0( + , (𝐹‘𝑤)) ⇝ (𝑊‘𝑤)) |
26 | seqex 13651 | . . . . 5 ⊢ seq0( + , (𝐹‘𝑤)) ∈ V | |
27 | fvex 6769 | . . . . 5 ⊢ (𝑊‘𝑤) ∈ V | |
28 | 26, 27 | breldm 5806 | . . . 4 ⊢ (seq0( + , (𝐹‘𝑤)) ⇝ (𝑊‘𝑤) → seq0( + , (𝐹‘𝑤)) ∈ dom ⇝ ) |
29 | 25, 28 | syl 17 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → seq0( + , (𝐹‘𝑤)) ∈ dom ⇝ ) |
30 | 1, 2, 3, 17, 29 | isumrecl 15405 | . 2 ⊢ ((𝜑 ∧ 𝑤 ∈ ℝ) → Σ𝑖 ∈ ℕ0 ((𝐹‘𝑤)‘𝑖) ∈ ℝ) |
31 | 30, 18 | fmptd 6970 | 1 ⊢ (𝜑 → 𝑊:ℝ⟶ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 class class class wbr 5070 ↦ cmpt 5153 dom cdm 5580 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 · cmul 10807 < clt 10940 − cmin 11135 -cneg 11136 / cdiv 11562 ℕcn 11903 2c2 11958 ℕ0cn0 12163 (,)cioo 13008 ⌊cfl 13438 seqcseq 13649 ↑cexp 13710 abscabs 14873 ⇝ cli 15121 Σcsu 15325 |
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-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 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-int 4877 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-se 5536 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-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-pm 8576 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-oi 9199 df-card 9628 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-ioo 13012 df-ico 13014 df-fz 13169 df-fzo 13312 df-fl 13440 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-limsup 15108 df-clim 15125 df-rlim 15126 df-sum 15326 df-ulm 25441 |
This theorem is referenced by: knoppcn2 34643 |
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