etransclem7 - Mathbox for Glauco Siliprandi

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Theorem etransclem7 44943

Description: The given product is an integer. (Contributed by Glauco Siliprandi, 5-Apr-2020.)

**Hypotheses**
Ref	Expression
etransclem7.n	⊢ (𝜑 → 𝑃 ∈ ℕ)
etransclem7.c	⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
etransclem7.j	⊢ (𝜑 → 𝐽 ∈ (0...𝑀))

**Assertion**
Ref	Expression
etransclem7	⊢ (𝜑 → ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) ∈ ℤ)

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

**Proof of Theorem etransclem7**
Step	Hyp	Ref	Expression
1		fzfid 13934	. 2 ⊢ (𝜑 → (1...𝑀) ∈ Fin)
2		0zd 12566	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
3		0zd 12566	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
4		etransclem7.n	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℕ)
5	4	nnzd 12581	. . . . . . . 8 ⊢ (𝜑 → 𝑃 ∈ ℤ)
6	5	ad2antrr 724	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℤ)
7	5	adantr 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑃 ∈ ℤ)
8		etransclem7.c	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
9	8	adantr 481	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐶:(0...𝑀)⟶(0...𝑁))
10		0zd 12566	. . . . . . . . . . . . . 14 ⊢ (𝑗 ∈ (1...𝑀) → 0 ∈ ℤ)
11		fzp1ss 13548	. . . . . . . . . . . . . 14 ⊢ (0 ∈ ℤ → ((0 + 1)...𝑀) ⊆ (0...𝑀))
12	10, 11	syl 17	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ (1...𝑀) → ((0 + 1)...𝑀) ⊆ (0...𝑀))
13		id 22	. . . . . . . . . . . . . 14 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ (1...𝑀))
14		1e0p1 12715	. . . . . . . . . . . . . . 15 ⊢ 1 = (0 + 1)
15	14	oveq1i 7415	. . . . . . . . . . . . . 14 ⊢ (1...𝑀) = ((0 + 1)...𝑀)
16	13, 15	eleqtrdi 2843	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ((0 + 1)...𝑀))
17	12, 16	sseldd 3982	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ (0...𝑀))
18	17	adantl 482	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ (0...𝑀))
19	9, 18	ffvelcdmd 7084	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ (0...𝑁))
20	19	elfzelzd 13498	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℤ)
21	7, 20	zsubcld 12667	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
22	21	adantr 481	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
23	20	zred 12662	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℝ)
24	23	adantr 481	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ∈ ℝ)
25	6	zred 12662	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℝ)
26		simpr 485	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ¬ 𝑃 < (𝐶‘𝑗))
27	24, 25, 26	nltled 11360	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ≤ 𝑃)
28	25, 24	subge0d 11800	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (0 ≤ (𝑃 − (𝐶‘𝑗)) ↔ (𝐶‘𝑗) ≤ 𝑃))
29	27, 28	mpbird 256	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝑃 − (𝐶‘𝑗)))
30		elfzle1 13500	. . . . . . . . . 10 ⊢ ((𝐶‘𝑗) ∈ (0...𝑁) → 0 ≤ (𝐶‘𝑗))
31	19, 30	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 0 ≤ (𝐶‘𝑗))
32	31	adantr 481	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝐶‘𝑗))
33	25, 24	subge02d 11802	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (0 ≤ (𝐶‘𝑗) ↔ (𝑃 − (𝐶‘𝑗)) ≤ 𝑃))
34	32, 33	mpbid 231	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ≤ 𝑃)
35	3, 6, 22, 29, 34	elfzd 13488	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ (0...𝑃))
36		permnn 14282	. . . . . 6 ⊢ ((𝑃 − (𝐶‘𝑗)) ∈ (0...𝑃) → ((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) ∈ ℕ)
37	35, 36	syl 17	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) ∈ ℕ)
38	37	nnzd 12581	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
39		etransclem7.j	. . . . . . . . 9 ⊢ (𝜑 → 𝐽 ∈ (0...𝑀))
40	39	elfzelzd 13498	. . . . . . . 8 ⊢ (𝜑 → 𝐽 ∈ ℤ)
41	40	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐽 ∈ ℤ)
42		elfzelz 13497	. . . . . . . 8 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ℤ)
43	42	adantl 482	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ ℤ)
44	41, 43	zsubcld 12667	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐽 − 𝑗) ∈ ℤ)
45	44	adantr 481	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐽 − 𝑗) ∈ ℤ)
46		elnn0z 12567	. . . . . 6 ⊢ ((𝑃 − (𝐶‘𝑗)) ∈ ℕ₀ ↔ ((𝑃 − (𝐶‘𝑗)) ∈ ℤ ∧ 0 ≤ (𝑃 − (𝐶‘𝑗))))
47	22, 29, 46	sylanbrc 583	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀)
48		zexpcl 14038	. . . . 5 ⊢ (((𝐽 − 𝑗) ∈ ℤ ∧ (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
49	45, 47, 48	syl2anc 584	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
50	38, 49	zmulcld 12668	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
51	2, 50	ifclda 4562	. 2 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) ∈ ℤ)
52	1, 51	fprodzcl 15894	1 ⊢ (𝜑 → ∏𝑗 ∈ (1...𝑀)if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) ∈ ℤ)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 ∈ wcel 2106 ⊆ wss 3947 ifcif 4527 class class class wbr 5147 ⟶wf 6536 ‘cfv 6540 (class class class)co 7405 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 < clt 11244 ≤ cle 11245 − cmin 11440 / cdiv 11867 ℕcn 12208 ℕ₀cn0 12468 ℤcz 12554 ...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-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-inf2 9632 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 ax-pre-sup 11184

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-int 4950 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-se 5631 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-isom 6549 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-1o 8462 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-sup 9433 df-oi 9501 df-card 9930 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-3 12272 df-n0 12469 df-z 12555 df-uz 12819 df-rp 12971 df-fz 13481 df-fzo 13624 df-seq 13963 df-exp 14024 df-fac 14230 df-bc 14259 df-hash 14287 df-cj 15042 df-re 15043 df-im 15044 df-sqrt 15178 df-abs 15179 df-clim 15428 df-prod 15846

This theorem is referenced by: etransclem15 44951 etransclem28 44964

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