etransclem7 - Mathbox for Glauco Siliprandi

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Theorem etransclem7 43457

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 13546	. 2 ⊢ (𝜑 → (1...𝑀) ∈ Fin)
2		0zd 12188	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
3		0zd 12188	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
4		etransclem7.n	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℕ)
5	4	nnzd 12281	. . . . . . . 8 ⊢ (𝜑 → 𝑃 ∈ ℤ)
6	5	ad2antrr 726	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℤ)
7	5	adantr 484	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑃 ∈ ℤ)
8		etransclem7.c	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
9	8	adantr 484	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐶:(0...𝑀)⟶(0...𝑁))
10		0zd 12188	. . . . . . . . . . . . . 14 ⊢ (𝑗 ∈ (1...𝑀) → 0 ∈ ℤ)
11		fzp1ss 13163	. . . . . . . . . . . . . 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 12335	. . . . . . . . . . . . . . 15 ⊢ 1 = (0 + 1)
15	14	oveq1i 7223	. . . . . . . . . . . . . 14 ⊢ (1...𝑀) = ((0 + 1)...𝑀)
16	13, 15	eleqtrdi 2848	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ((0 + 1)...𝑀))
17	12, 16	sseldd 3902	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ (0...𝑀))
18	17	adantl 485	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ (0...𝑀))
19	9, 18	ffvelrnd 6905	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ (0...𝑁))
20	19	elfzelzd 13113	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℤ)
21	7, 20	zsubcld 12287	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
22	21	adantr 484	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
23	20	zred 12282	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℝ)
24	23	adantr 484	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ∈ ℝ)
25	6	zred 12282	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℝ)
26		simpr 488	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ¬ 𝑃 < (𝐶‘𝑗))
27	24, 25, 26	nltled 10982	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ≤ 𝑃)
28	25, 24	subge0d 11422	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (0 ≤ (𝑃 − (𝐶‘𝑗)) ↔ (𝐶‘𝑗) ≤ 𝑃))
29	27, 28	mpbird 260	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝑃 − (𝐶‘𝑗)))
30		elfzle1 13115	. . . . . . . . . 10 ⊢ ((𝐶‘𝑗) ∈ (0...𝑁) → 0 ≤ (𝐶‘𝑗))
31	19, 30	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 0 ≤ (𝐶‘𝑗))
32	31	adantr 484	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝐶‘𝑗))
33	25, 24	subge02d 11424	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (0 ≤ (𝐶‘𝑗) ↔ (𝑃 − (𝐶‘𝑗)) ≤ 𝑃))
34	32, 33	mpbid 235	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ≤ 𝑃)
35	3, 6, 22, 29, 34	elfzd 13103	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ (0...𝑃))
36		permnn 13892	. . . . . 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 12281	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
39		etransclem7.j	. . . . . . . . 9 ⊢ (𝜑 → 𝐽 ∈ (0...𝑀))
40	39	elfzelzd 13113	. . . . . . . 8 ⊢ (𝜑 → 𝐽 ∈ ℤ)
41	40	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐽 ∈ ℤ)
42		elfzelz 13112	. . . . . . . 8 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ℤ)
43	42	adantl 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ ℤ)
44	41, 43	zsubcld 12287	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐽 − 𝑗) ∈ ℤ)
45	44	adantr 484	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐽 − 𝑗) ∈ ℤ)
46		elnn0z 12189	. . . . . 6 ⊢ ((𝑃 − (𝐶‘𝑗)) ∈ ℕ₀ ↔ ((𝑃 − (𝐶‘𝑗)) ∈ ℤ ∧ 0 ≤ (𝑃 − (𝐶‘𝑗))))
47	22, 29, 46	sylanbrc 586	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀)
48		zexpcl 13650	. . . . 5 ⊢ (((𝐽 − 𝑗) ∈ ℤ ∧ (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
49	45, 47, 48	syl2anc 587	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
50	38, 49	zmulcld 12288	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
51	2, 50	ifclda 4474	. 2 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) ∈ ℤ)
52	1, 51	fprodzcl 15516	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 399 ∈ wcel 2110 ⊆ wss 3866 ifcif 4439 class class class wbr 5053 ⟶wf 6376 ‘cfv 6380 (class class class)co 7213 ℝcr 10728 0cc0 10729 1c1 10730 + caddc 10732 · cmul 10734 < clt 10867 ≤ cle 10868 − cmin 11062 / cdiv 11489 ℕcn 11830 ℕ₀cn0 12090 ℤcz 12176 ...cfz 13095 ↑cexp 13635 !cfa 13839 ∏cprod 15467

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-inf2 9256 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807

This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-int 4860 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-se 5510 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-isom 6389 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-1o 8202 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-fin 8630 df-sup 9058 df-oi 9126 df-card 9555 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-div 11490 df-nn 11831 df-2 11893 df-3 11894 df-n0 12091 df-z 12177 df-uz 12439 df-rp 12587 df-fz 13096 df-fzo 13239 df-seq 13575 df-exp 13636 df-fac 13840 df-bc 13869 df-hash 13897 df-cj 14662 df-re 14663 df-im 14664 df-sqrt 14798 df-abs 14799 df-clim 15049 df-prod 15468

This theorem is referenced by: etransclem15 43465 etransclem28 43478

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