etransclem14 - Mathbox for Glauco Siliprandi

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Theorem etransclem14 44964

Description: Value of the term 𝑇, when 𝐽 = 0 and (𝐶‘0) = 𝑃 − 1 (Contributed by Glauco Siliprandi, 5-Apr-2020.)

**Hypotheses**
Ref	Expression
etransclem14.n	⊢ (𝜑 → 𝑃 ∈ ℕ)
etransclem14.m	⊢ (𝜑 → 𝑀 ∈ ℕ₀)
etransclem14.c	⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
etransclem14.t	⊢ 𝑇 = (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · (if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))))))
etransclem14.j	⊢ (𝜑 → 𝐽 = 0)
etransclem14.cpm1	⊢ (𝜑 → (𝐶‘0) = (𝑃 − 1))

**Assertion**
Ref	Expression
etransclem14	⊢ (𝜑 → 𝑇 = (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · ((!‘(𝑃 − 1)) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗))))))))

Distinct variable groups: 𝑗,𝑀 𝜑,𝑗 Allowed substitution hints: 𝐶(𝑗) 𝑃(𝑗) 𝑇(𝑗) 𝐽(𝑗) 𝑁(𝑗)

**Proof of Theorem etransclem14**
Step	Hyp	Ref	Expression
1		etransclem14.t	. 2 ⊢ 𝑇 = (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · (if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))))))
2		etransclem14.cpm1	. . . . . . . 8 ⊢ (𝜑 → (𝐶‘0) = (𝑃 − 1))
3		fzssre 44024	. . . . . . . . . 10 ⊢ (0...𝑁) ⊆ ℝ
4		etransclem14.c	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
5		etransclem14.m	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
6		nn0uz 12864	. . . . . . . . . . . . 13 ⊢ ℕ₀ = (ℤ_≥‘0)
7	5, 6	eleqtrdi 2844	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ∈ (ℤ_≥‘0))
8		eluzfz1 13508	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ (ℤ_≥‘0) → 0 ∈ (0...𝑀))
9	7, 8	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 0 ∈ (0...𝑀))
10	4, 9	ffvelcdmd 7088	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ (0...𝑁))
11	3, 10	sselid 3981	. . . . . . . . 9 ⊢ (𝜑 → (𝐶‘0) ∈ ℝ)
12	2, 11	eqeltrrd 2835	. . . . . . . . 9 ⊢ (𝜑 → (𝑃 − 1) ∈ ℝ)
13	11, 12	lttri3d 11354	. . . . . . . 8 ⊢ (𝜑 → ((𝐶‘0) = (𝑃 − 1) ↔ (¬ (𝐶‘0) < (𝑃 − 1) ∧ ¬ (𝑃 − 1) < (𝐶‘0))))
14	2, 13	mpbid 231	. . . . . . 7 ⊢ (𝜑 → (¬ (𝐶‘0) < (𝑃 − 1) ∧ ¬ (𝑃 − 1) < (𝐶‘0)))
15	14	simprd 497	. . . . . 6 ⊢ (𝜑 → ¬ (𝑃 − 1) < (𝐶‘0))
16	15	iffalsed 4540	. . . . 5 ⊢ (𝜑 → if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) = (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0)))))
17	12	recnd 11242	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑃 − 1) ∈ ℂ)
18	2	eqcomd 2739	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑃 − 1) = (𝐶‘0))
19	17, 18	subeq0bd 11640	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑃 − 1) − (𝐶‘0)) = 0)
20	19	fveq2d 6896	. . . . . . . . 9 ⊢ (𝜑 → (!‘((𝑃 − 1) − (𝐶‘0))) = (!‘0))
21		fac0 14236	. . . . . . . . 9 ⊢ (!‘0) = 1
22	20, 21	eqtrdi 2789	. . . . . . . 8 ⊢ (𝜑 → (!‘((𝑃 − 1) − (𝐶‘0))) = 1)
23	22	oveq2d 7425	. . . . . . 7 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) = ((!‘(𝑃 − 1)) / 1))
24		etransclem14.n	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ ℕ)
25		nnm1nn0 12513	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
26	24, 25	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℕ₀)
27	26	faccld 14244	. . . . . . . . 9 ⊢ (𝜑 → (!‘(𝑃 − 1)) ∈ ℕ)
28	27	nncnd 12228	. . . . . . . 8 ⊢ (𝜑 → (!‘(𝑃 − 1)) ∈ ℂ)
29	28	div1d 11982	. . . . . . 7 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / 1) = (!‘(𝑃 − 1)))
30	23, 29	eqtrd 2773	. . . . . 6 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) = (!‘(𝑃 − 1)))
31		etransclem14.j	. . . . . . . 8 ⊢ (𝜑 → 𝐽 = 0)
32	31, 19	oveq12d 7427	. . . . . . 7 ⊢ (𝜑 → (𝐽↑((𝑃 − 1) − (𝐶‘0))) = (0↑0))
33		0exp0e1 14032	. . . . . . 7 ⊢ (0↑0) = 1
34	32, 33	eqtrdi 2789	. . . . . 6 ⊢ (𝜑 → (𝐽↑((𝑃 − 1) − (𝐶‘0))) = 1)
35	30, 34	oveq12d 7427	. . . . 5 ⊢ (𝜑 → (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0)))) = ((!‘(𝑃 − 1)) · 1))
36	28	mulridd 11231	. . . . 5 ⊢ (𝜑 → ((!‘(𝑃 − 1)) · 1) = (!‘(𝑃 − 1)))
37	16, 35, 36	3eqtrd 2777	. . . 4 ⊢ (𝜑 → if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) = (!‘(𝑃 − 1)))
38	31	oveq1d 7424	. . . . . . . . 9 ⊢ (𝜑 → (𝐽 − 𝑗) = (0 − 𝑗))
39		df-neg 11447	. . . . . . . . 9 ⊢ -𝑗 = (0 − 𝑗)
40	38, 39	eqtr4di 2791	. . . . . . . 8 ⊢ (𝜑 → (𝐽 − 𝑗) = -𝑗)
41	40	oveq1d 7424	. . . . . . 7 ⊢ (𝜑 → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) = (-𝑗↑(𝑃 − (𝐶‘𝑗))))
42	41	oveq2d 7425	. . . . . 6 ⊢ (𝜑 → (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))) = (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗)))))
43	42	ifeq2d 4549	. . . . 5 ⊢ (𝜑 → if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) = if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗))))))
44	43	prodeq2ad 44308	. . . 4 ⊢ (𝜑 → ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) = ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗))))))
45	37, 44	oveq12d 7427	. . 3 ⊢ (𝜑 → (if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))))) = ((!‘(𝑃 − 1)) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗)))))))
46	45	oveq2d 7425	. 2 ⊢ (𝜑 → (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · (if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))))) = (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · ((!‘(𝑃 − 1)) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗))))))))
47	1, 46	eqtrid 2785	1 ⊢ (𝜑 → 𝑇 = (((!‘𝑁) / ∏𝑗 ∈ (0...𝑀)(!‘(𝐶‘𝑗))) · ((!‘(𝑃 − 1)) · ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗))))))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ifcif 4529 class class class wbr 5149 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 ℝcr 11109 0cc0 11110 1c1 11111 · cmul 11115 < clt 11248 − cmin 11444 -cneg 11445 / cdiv 11871 ℕcn 12212 ℕ₀cn0 12472 ℤ_≥cuz 12822 ...cfz 13484 ↑cexp 14027 !cfa 14233 ∏cprod 15849

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-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-1st 7975 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-n0 12473 df-z 12559 df-uz 12823 df-fz 13485 df-seq 13967 df-exp 14028 df-fac 14234 df-prod 15850

This theorem is referenced by: etransclem28 44978

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