knoppndvlem7 - Mathbox for Asger C. Ipsen

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Theorem knoppndvlem7 35486

Description: Lemma for knoppndv 35502. (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 12586	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
7		knoppndvlem7.m	. . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ)
8	4, 6, 7	knoppndvlem1 35480	. . . 4 ⊢ (𝜑 → ((((2 · 𝑁)↑-𝐽) / 2) · 𝑀) ∈ ℝ)
9	3, 8	eqeltrd 2833	. . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ)
10	1, 9, 5	knoppcnlem1 35461	. 2 ⊢ (𝜑 → ((𝐹‘𝐴)‘𝐽) = ((𝐶↑𝐽) · (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴))))
11	2	oveq2i 7422	. . . . . 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 12292	. . . . . . . . . 10 ⊢ (𝜑 → 2 ∈ ℂ)
14		nnz 12581	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
15	4, 14	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℤ)
16	15	zcnd 12669	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℂ)
17	13, 16	mulcld 11236	. . . . . . . . 9 ⊢ (𝜑 → (2 · 𝑁) ∈ ℂ)
18	17, 5	expcld 14113	. . . . . . . 8 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ∈ ℂ)
19		2ne0 12318	. . . . . . . . . . . 12 ⊢ 2 ≠ 0
20	19	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → 2 ≠ 0)
21		0red 11219	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 ∈ ℝ)
22		1red 11217	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ∈ ℝ)
23	15	zred 12668	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑁 ∈ ℝ)
24		0lt1 11738	. . . . . . . . . . . . . . 15 ⊢ 0 < 1
25	24	a1i 11	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 0 < 1)
26		nnge1 12242	. . . . . . . . . . . . . . 15 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁)
27	4, 26	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 1 ≤ 𝑁)
28	21, 22, 23, 25, 27	ltletrd 11376	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 < 𝑁)
29	21, 28	ltned 11352	. . . . . . . . . . . 12 ⊢ (𝜑 → 0 ≠ 𝑁)
30	29	necomd 2996	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ≠ 0)
31	13, 16, 20, 30	mulne0d 11868	. . . . . . . . . 10 ⊢ (𝜑 → (2 · 𝑁) ≠ 0)
32	6	znegcld 12670	. . . . . . . . . 10 ⊢ (𝜑 → -𝐽 ∈ ℤ)
33	17, 31, 32	expclzd 14118	. . . . . . . . 9 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) ∈ ℂ)
34	33, 13, 20	divcld 11992	. . . . . . . 8 ⊢ (𝜑 → (((2 · 𝑁)↑-𝐽) / 2) ∈ ℂ)
35	7	zcnd 12669	. . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℂ)
36	18, 34, 35	mulassd 11239	. . . . . . 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 12027	. . . . . . . . 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 14120	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑-𝐽) = (1 / ((2 · 𝑁)↑𝐽)))
41	40	oveq2d 7427	. . . . . . . . . 10 ⊢ (𝜑 → (((2 · 𝑁)↑𝐽) · ((2 · 𝑁)↑-𝐽)) = (((2 · 𝑁)↑𝐽) · (1 / ((2 · 𝑁)↑𝐽))))
42	17, 31, 6	expne0d 14119	. . . . . . . . . . 11 ⊢ (𝜑 → ((2 · 𝑁)↑𝐽) ≠ 0)
43	18, 42	recidd 11987	. . . . . . . . . 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 7426	. . . . . . . 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 7426	. . . . . 6 ⊢ (𝜑 → ((((2 · 𝑁)↑𝐽) · (((2 · 𝑁)↑-𝐽) / 2)) · 𝑀) = ((1 / 2) · 𝑀))
48	35, 13, 20	divrec2d 11996	. . . . . . 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 6895	. . 3 ⊢ (𝜑 → (𝑇‘(((2 · 𝑁)↑𝐽) · 𝐴)) = (𝑇‘(𝑀 / 2)))
53	52	oveq2d 7427	. 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 5148 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7411 ℝcr 11111 0cc0 11112 1c1 11113 + caddc 11115 · cmul 11117 < clt 11250 ≤ cle 11251 − cmin 11446 -cneg 11447 / cdiv 11873 ℕcn 12214 2c2 12269 ℕ₀cn0 12474 ℤcz 12560 ⌊cfl 13757 ↑cexp 14029 abscabs 15183

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 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

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 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-div 11874 df-nn 12215 df-2 12277 df-n0 12475 df-z 12561 df-uz 12825 df-seq 13969 df-exp 14030

This theorem is referenced by: knoppndvlem8 35487 knoppndvlem9 35488

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