knoppndvlem7 - Mathbox for Asger C. Ipsen

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Theorem knoppndvlem7 35394

Description: Lemma for knoppndv 35410. (Contributed by Asger C. Ipsen, 15-Jun-2021.) (Revised by Asger C. Ipsen, 5-Jul-2021.)

**Hypotheses**
Ref	Expression
knoppndvlem7.t	⊢ 𝑇 = (𝑥 ∈ ℝ ↦ (abs‘((⌊‘(𝑥 + (1 / 2))) − 𝑥)))
knoppndvlem7.f	⊢ 𝐹 = (𝑦 ∈ ℝ ↦ (𝑛 ∈ ℕ₀ ↦ ((𝐶↑𝑛) · (𝑇‘(((2 · 𝑁)↑𝑛) · 𝑦)))))
knoppndvlem7.a	⊢ 𝐴 = ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)
knoppndvlem7.j	⊢ (𝜑 → 𝐽 ∈ ℕ₀)
knoppndvlem7.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
knoppndvlem7.n	⊢ (𝜑 → 𝑁 ∈ ℕ)

**Assertion**
Ref	Expression
knoppndvlem7	⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(𝑀 / 2))))

Distinct variable groups: 𝐴,𝑛,𝑦 𝐶,𝑛,𝑦 𝑛,𝐽 𝑛,𝑁,𝑦 𝑇,𝑛,𝑦 𝜑,𝑛,𝑦 Allowed substitution hints: 𝜑(𝑥) 𝐴(𝑥) 𝐶(𝑥) 𝑇(𝑥) 𝐹(𝑥,𝑦,𝑛) 𝐽(𝑥,𝑦) 𝑀(𝑥,𝑦,𝑛) 𝑁(𝑥)

**Proof of Theorem knoppndvlem7**
Step	Hyp	Ref	Expression
1		knoppndvlem7.f	. . 3 ⊢ 𝐹 = (𝑦 ∈ ℝ ↦ (𝑛 ∈ ℕ₀ ↦ ((𝐶↑𝑛) · (𝑇‘(((2 · 𝑁)↑𝑛) · 𝑦)))))
2		knoppndvlem7.a	. . . . 5 ⊢ 𝐴 = ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)
3	2	a1i 11	. . . 4 ⊢ (𝜑 → 𝐴 = ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀))
4		knoppndvlem7.n	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℕ)
5		knoppndvlem7.j	. . . . . 6 ⊢ (𝜑 → 𝐽 ∈ ℕ₀)
6	5	nn0zd 12584	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
7		knoppndvlem7.m	. . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ)
8	4, 6, 7	knoppndvlem1 35388	. . . 4 ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ)
9	3, 8	eqeltrd 2834	. . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ)
10	1, 9, 5	knoppcnlem1 35369	. 2 ⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴))))
11	2	oveq2i 7420	. . . . . 6 ⊢ (((2 · 𝑁)↑𝐽) · 𝐴) = (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀))
12	11	a1i 11	. . . . 5 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · 𝐴) = (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)))
13		2cnd 12290	. . . . . . . . . 10 ⊢ (𝜑 → 2 ∈ ℂ)
14		nnz 12579	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
15	4, 14	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℤ)
16	15	zcnd 12667	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℂ)
17	13, 16	mulcld 11234	. . . . . . . . 9 ⊢ (𝜑 → (2 · 𝑁) ∈ ℂ)
18	17, 5	expcld 14111	. . . . . . . 8 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ∈ ℂ)
19		2ne0 12316	. . . . . . . . . . . 12 ⊢ 2 ≠ 0
20	19	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → 2 ≠ 0)
21		0red 11217	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 ∈ ℝ)
22		1red 11215	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ∈ ℝ)
23	15	zred 12666	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑁 ∈ ℝ)
24		0lt1 11736	. . . . . . . . . . . . . . 15 ⊢ 0 < 1
25	24	a1i 11	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 0 < 1)
26		nnge1 12240	. . . . . . . . . . . . . . 15 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁)
27	4, 26	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ≤ 𝑁)
28	21, 22, 23, 25, 27	ltletrd 11374	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 < 𝑁)
29	21, 28	ltned 11350	. . . . . . . . . . . 12 ⊢ (𝜑 → 0 ≠ 𝑁)
30	29	necomd 2997	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ≠ 0)
31	13, 16, 20, 30	mulne0d 11866	. . . . . . . . . 10 ⊢ (𝜑 → (2 · 𝑁) ≠ 0)
32	6	znegcld 12668	. . . . . . . . . 10 ⊢ (𝜑 → -𝐽 ∈ ℤ)
33	17, 31, 32	expclzd 14116	. . . . . . . . 9 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) ∈ ℂ)
34	33, 13, 20	divcld 11990	. . . . . . . 8 ⊢ (𝜑 → (((2 · 𝑁)↑-𝐽) / 2) ∈ ℂ)
35	7	zcnd 12667	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℂ)
36	18, 34, 35	mulassd 11237	. . . . . . 7 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀) = (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)))
37	36	eqcomd 2739	. . . . . 6 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)) = ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀))
38	18, 33, 13, 20	divassd 12025	. . . . . . . . 9 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2) = (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)))
39	38	eqcomd 2739	. . . . . . . 8 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) = ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2))
40	17, 31, 6	expnegd 14118	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) = (1 / ((2 · 𝑁)↑𝐽)))
41	40	oveq2d 7425	. . . . . . . . . 10 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) = (((2 · 𝑁)↑𝐽) · (1 / ((2 · 𝑁)↑𝐽))))
42	17, 31, 6	expne0d 14117	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ≠ 0)
43	18, 42	recidd 11985	. . . . . . . . . 10 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (1 / ((2 · 𝑁)↑𝐽))) = 1)
44	41, 43	eqtrd 2773	. . . . . . . . 9 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) = 1)
45	44	oveq1d 7424	. . . . . . . 8 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2) = (1 / 2))
46	39, 45	eqtrd 2773	. . . . . . 7 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) = (1 / 2))
47	46	oveq1d 7424	. . . . . 6 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀) = ((1 / 2) · 𝑀))
48	35, 13, 20	divrec2d 11994	. . . . . . 7 ⊢ (𝜑 → (𝑀 / 2) = ((1 / 2) · 𝑀))
49	48	eqcomd 2739	. . . . . 6 ⊢ (𝜑 → ((1 / 2) · 𝑀) = (𝑀 / 2))
50	37, 47, 49	3eqtrd 2777	. . . . 5 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)) = (𝑀 / 2))
51	12, 50	eqtrd 2773	. . . 4 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · 𝐴) = (𝑀 / 2))
52	51	fveq2d 6896	. . 3 ⊢ (𝜑 → (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴)) = (𝑇‘(𝑀 / 2)))
53	52	oveq2d 7425	. 2 ⊢ (𝜑 → ((𝐶↑𝐽) · (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴))) = ((𝐶↑𝐽) · (𝑇‘(𝑀 / 2))))
54	10, 53	eqtrd 2773	1 ⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(𝑀 / 2))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 class class class wbr 5149 ↦ cmpt 5232 ‘cfv 6544 (class class class)co 7409 ℝcr 11109 0cc0 11110 1c1 11111 + caddc 11113 · cmul 11115 < clt 11248 ≤ cle 11249 − cmin 11444 -cneg 11445 / cdiv 11871 ℕcn 12212 2c2 12267 ℕ₀cn0 12472 ℤcz 12558 ⌊cfl 13755 ↑cexp 14027 abscabs 15181

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-2nd 7976 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-er 8703 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-n0 12473 df-z 12559 df-uz 12823 df-seq 13967 df-exp 14028

This theorem is referenced by: knoppndvlem8 35395 knoppndvlem9 35396

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