etransclem14 - Mathbox for Glauco Siliprandi

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Theorem etransclem14 44950

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 44010	. . . . . . . . . 10 ⊢ (0...𝑁) ⊆ ℝ
4		etransclem14.c	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
5		etransclem14.m	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
6		nn0uz 12860	. . . . . . . . . . . . 13 ⊢ ℕ₀ = (ℤ_≥‘0)
7	5, 6	eleqtrdi 2843	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ∈ (ℤ_≥‘0))
8		eluzfz1 13504	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ (ℤ_≥‘0) → 0 ∈ (0...𝑀))
9	7, 8	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 0 ∈ (0...𝑀))
10	4, 9	ffvelcdmd 7084	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ (0...𝑁))
11	3, 10	sselid 3979	. . . . . . . . 9 ⊢ (𝜑 → (𝐶‘0) ∈ ℝ)
12	2, 11	eqeltrrd 2834	. . . . . . . . 9 ⊢ (𝜑 → (𝑃 − 1) ∈ ℝ)
13	11, 12	lttri3d 11350	. . . . . . . 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 496	. . . . . 6 ⊢ (𝜑 → ¬ (𝑃 − 1) < (𝐶‘0))
16	15	iffalsed 4538	. . . . 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 11238	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑃 − 1) ∈ ℂ)
18	2	eqcomd 2738	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑃 − 1) = (𝐶‘0))
19	17, 18	subeq0bd 11636	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑃 − 1) − (𝐶‘0)) = 0)
20	19	fveq2d 6892	. . . . . . . . 9 ⊢ (𝜑 → (!‘((𝑃 − 1) − (𝐶‘0))) = (!‘0))
21		fac0 14232	. . . . . . . . 9 ⊢ (!‘0) = 1
22	20, 21	eqtrdi 2788	. . . . . . . 8 ⊢ (𝜑 → (!‘((𝑃 − 1) − (𝐶‘0))) = 1)
23	22	oveq2d 7421	. . . . . . 7 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) = ((!‘(𝑃 − 1)) / 1))
24		etransclem14.n	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ ℕ)
25		nnm1nn0 12509	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
26	24, 25	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℕ₀)
27	26	faccld 14240	. . . . . . . . 9 ⊢ (𝜑 → (!‘(𝑃 − 1)) ∈ ℕ)
28	27	nncnd 12224	. . . . . . . 8 ⊢ (𝜑 → (!‘(𝑃 − 1)) ∈ ℂ)
29	28	div1d 11978	. . . . . . 7 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / 1) = (!‘(𝑃 − 1)))
30	23, 29	eqtrd 2772	. . . . . 6 ⊢ (𝜑 → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) = (!‘(𝑃 − 1)))
31		etransclem14.j	. . . . . . . 8 ⊢ (𝜑 → 𝐽 = 0)
32	31, 19	oveq12d 7423	. . . . . . 7 ⊢ (𝜑 → (𝐽↑((𝑃 − 1) − (𝐶‘0))) = (0↑0))
33		0exp0e1 14028	. . . . . . 7 ⊢ (0↑0) = 1
34	32, 33	eqtrdi 2788	. . . . . 6 ⊢ (𝜑 → (𝐽↑((𝑃 − 1) − (𝐶‘0))) = 1)
35	30, 34	oveq12d 7423	. . . . 5 ⊢ (𝜑 → (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0)))) = ((!‘(𝑃 − 1)) · 1))
36	28	mulridd 11227	. . . . 5 ⊢ (𝜑 → ((!‘(𝑃 − 1)) · 1) = (!‘(𝑃 − 1)))
37	16, 35, 36	3eqtrd 2776	. . . 4 ⊢ (𝜑 → if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) = (!‘(𝑃 − 1)))
38	31	oveq1d 7420	. . . . . . . . 9 ⊢ (𝜑 → (𝐽 − 𝑗) = (0 − 𝑗))
39		df-neg 11443	. . . . . . . . 9 ⊢ -𝑗 = (0 − 𝑗)
40	38, 39	eqtr4di 2790	. . . . . . . 8 ⊢ (𝜑 → (𝐽 − 𝑗) = -𝑗)
41	40	oveq1d 7420	. . . . . . 7 ⊢ (𝜑 → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) = (-𝑗↑(𝑃 − (𝐶‘𝑗))))
42	41	oveq2d 7421	. . . . . 6 ⊢ (𝜑 → (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))) = (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · (-𝑗↑(𝑃 − (𝐶‘𝑗)))))
43	42	ifeq2d 4547	. . . . 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 44294	. . . 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 7423	. . 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 7421	. 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 2784	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 396 = wceq 1541 ∈ wcel 2106 ifcif 4527 class class class wbr 5147 ⟶wf 6536 ‘cfv 6540 (class class class)co 7405 ℝcr 11105 0cc0 11106 1c1 11107 · cmul 11111 < clt 11244 − cmin 11440 -cneg 11441 / cdiv 11867 ℕcn 12208 ℕ₀cn0 12468 ℤ_≥cuz 12818 ...cfz 13480 ↑cexp 14023 !cfa 14229 ∏cprod 15845

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-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-1st 7971 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-n0 12469 df-z 12555 df-uz 12819 df-fz 13481 df-seq 13963 df-exp 14024 df-fac 14230 df-prod 15846

This theorem is referenced by: etransclem28 44964

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