knoppndvlem7 - Mathbox for Asger C. Ipsen

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Theorem knoppndvlem7 35382

Description: Lemma for knoppndv 35398. (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 12580	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
7		knoppndvlem7.m	. . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ)
8	4, 6, 7	knoppndvlem1 35376	. . . 4 ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ)
9	3, 8	eqeltrd 2833	. . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ)
10	1, 9, 5	knoppcnlem1 35357	. 2 ⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴))))
11	2	oveq2i 7416	. . . . . 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 12286	. . . . . . . . . 10 ⊢ (𝜑 → 2 ∈ ℂ)
14		nnz 12575	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
15	4, 14	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℤ)
16	15	zcnd 12663	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℂ)
17	13, 16	mulcld 11230	. . . . . . . . 9 ⊢ (𝜑 → (2 · 𝑁) ∈ ℂ)
18	17, 5	expcld 14107	. . . . . . . 8 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ∈ ℂ)
19		2ne0 12312	. . . . . . . . . . . 12 ⊢ 2 ≠ 0
20	19	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → 2 ≠ 0)
21		0red 11213	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 ∈ ℝ)
22		1red 11211	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ∈ ℝ)
23	15	zred 12662	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑁 ∈ ℝ)
24		0lt1 11732	. . . . . . . . . . . . . . 15 ⊢ 0 < 1
25	24	a1i 11	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 0 < 1)
26		nnge1 12236	. . . . . . . . . . . . . . 15 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁)
27	4, 26	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ≤ 𝑁)
28	21, 22, 23, 25, 27	ltletrd 11370	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 < 𝑁)
29	21, 28	ltned 11346	. . . . . . . . . . . 12 ⊢ (𝜑 → 0 ≠ 𝑁)
30	29	necomd 2996	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ≠ 0)
31	13, 16, 20, 30	mulne0d 11862	. . . . . . . . . 10 ⊢ (𝜑 → (2 · 𝑁) ≠ 0)
32	6	znegcld 12664	. . . . . . . . . 10 ⊢ (𝜑 → -𝐽 ∈ ℤ)
33	17, 31, 32	expclzd 14112	. . . . . . . . 9 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) ∈ ℂ)
34	33, 13, 20	divcld 11986	. . . . . . . 8 ⊢ (𝜑 → (((2 · 𝑁)↑-𝐽) / 2) ∈ ℂ)
35	7	zcnd 12663	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℂ)
36	18, 34, 35	mulassd 11233	. . . . . . 7 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀) = (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)))
37	36	eqcomd 2738	. . . . . 6 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)) = ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀))
38	18, 33, 13, 20	divassd 12021	. . . . . . . . 9 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2) = (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)))
39	38	eqcomd 2738	. . . . . . . 8 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) = ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2))
40	17, 31, 6	expnegd 14114	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) = (1 / ((2 · 𝑁)↑𝐽)))
41	40	oveq2d 7421	. . . . . . . . . 10 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) = (((2 · 𝑁)↑𝐽) · (1 / ((2 · 𝑁)↑𝐽))))
42	17, 31, 6	expne0d 14113	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ≠ 0)
43	18, 42	recidd 11981	. . . . . . . . . 10 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (1 / ((2 · 𝑁)↑𝐽))) = 1)
44	41, 43	eqtrd 2772	. . . . . . . . 9 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) = 1)
45	44	oveq1d 7420	. . . . . . . 8 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) / 2) = (1 / 2))
46	39, 45	eqtrd 2772	. . . . . . 7 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) = (1 / 2))
47	46	oveq1d 7420	. . . . . 6 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀) = ((1 / 2) · 𝑀))
48	35, 13, 20	divrec2d 11990	. . . . . . 7 ⊢ (𝜑 → (𝑀 / 2) = ((1 / 2) · 𝑀))
49	48	eqcomd 2738	. . . . . 6 ⊢ (𝜑 → ((1 / 2) · 𝑀) = (𝑀 / 2))
50	37, 47, 49	3eqtrd 2776	. . . . 5 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀)) = (𝑀 / 2))
51	12, 50	eqtrd 2772	. . . 4 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · 𝐴) = (𝑀 / 2))
52	51	fveq2d 6892	. . 3 ⊢ (𝜑 → (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴)) = (𝑇‘(𝑀 / 2)))
53	52	oveq2d 7421	. 2 ⊢ (𝜑 → ((𝐶↑𝐽) · (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴))) = ((𝐶↑𝐽) · (𝑇‘(𝑀 / 2))))
54	10, 53	eqtrd 2772	1 ⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(𝑀 / 2))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 class class class wbr 5147 ↦ cmpt 5230 ‘cfv 6540 (class class class)co 7405 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 < clt 11244 ≤ cle 11245 − cmin 11440 -cneg 11441 / cdiv 11867 ℕcn 12208 2c2 12263 ℕ₀cn0 12468 ℤcz 12554 ⌊cfl 13751 ↑cexp 14023 abscabs 15177

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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-n0 12469 df-z 12555 df-uz 12819 df-seq 13963 df-exp 14024

This theorem is referenced by: knoppndvlem8 35383 knoppndvlem9 35384

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