etransclem7 - Mathbox for Glauco Siliprandi

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Theorem etransclem7 44957

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 13938	. 2 ⊢ (𝜑 → (1...𝑀) ∈ Fin)
2		0zd 12570	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
3		0zd 12570	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ∈ ℤ)
4		etransclem7.n	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ℕ)
5	4	nnzd 12585	. . . . . . . 8 ⊢ (𝜑 → 𝑃 ∈ ℤ)
6	5	ad2antrr 725	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℤ)
7	5	adantr 482	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑃 ∈ ℤ)
8		etransclem7.c	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
9	8	adantr 482	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐶:(0...𝑀)⟶(0...𝑁))
10		0zd 12570	. . . . . . . . . . . . . 14 ⊢ (𝑗 ∈ (1...𝑀) → 0 ∈ ℤ)
11		fzp1ss 13552	. . . . . . . . . . . . . 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 12719	. . . . . . . . . . . . . . 15 ⊢ 1 = (0 + 1)
15	14	oveq1i 7419	. . . . . . . . . . . . . 14 ⊢ (1...𝑀) = ((0 + 1)...𝑀)
16	13, 15	eleqtrdi 2844	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ((0 + 1)...𝑀))
17	12, 16	sseldd 3984	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ (0...𝑀))
18	17	adantl 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ (0...𝑀))
19	9, 18	ffvelcdmd 7088	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ (0...𝑁))
20	19	elfzelzd 13502	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℤ)
21	7, 20	zsubcld 12671	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
22	21	adantr 482	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℤ)
23	20	zred 12666	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐶‘𝑗) ∈ ℝ)
24	23	adantr 482	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ∈ ℝ)
25	6	zred 12666	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 𝑃 ∈ ℝ)
26		simpr 486	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ¬ 𝑃 < (𝐶‘𝑗))
27	24, 25, 26	nltled 11364	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐶‘𝑗) ≤ 𝑃)
28	25, 24	subge0d 11804	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (0 ≤ (𝑃 − (𝐶‘𝑗)) ↔ (𝐶‘𝑗) ≤ 𝑃))
29	27, 28	mpbird 257	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝑃 − (𝐶‘𝑗)))
30		elfzle1 13504	. . . . . . . . . 10 ⊢ ((𝐶‘𝑗) ∈ (0...𝑁) → 0 ≤ (𝐶‘𝑗))
31	19, 30	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 0 ≤ (𝐶‘𝑗))
32	31	adantr 482	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → 0 ≤ (𝐶‘𝑗))
33	25, 24	subge02d 11806	. . . . . . . 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 13492	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ (0...𝑃))
36		permnn 14286	. . . . . 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 12585	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
39		etransclem7.j	. . . . . . . . 9 ⊢ (𝜑 → 𝐽 ∈ (0...𝑀))
40	39	elfzelzd 13502	. . . . . . . 8 ⊢ (𝜑 → 𝐽 ∈ ℤ)
41	40	adantr 482	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝐽 ∈ ℤ)
42		elfzelz 13501	. . . . . . . 8 ⊢ (𝑗 ∈ (1...𝑀) → 𝑗 ∈ ℤ)
43	42	adantl 483	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → 𝑗 ∈ ℤ)
44	41, 43	zsubcld 12671	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → (𝐽 − 𝑗) ∈ ℤ)
45	44	adantr 482	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝐽 − 𝑗) ∈ ℤ)
46		elnn0z 12571	. . . . . 6 ⊢ ((𝑃 − (𝐶‘𝑗)) ∈ ℕ₀ ↔ ((𝑃 − (𝐶‘𝑗)) ∈ ℤ ∧ 0 ≤ (𝑃 − (𝐶‘𝑗))))
47	22, 29, 46	sylanbrc 584	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀)
48		zexpcl 14042	. . . . 5 ⊢ (((𝐽 − 𝑗) ∈ ℤ ∧ (𝑃 − (𝐶‘𝑗)) ∈ ℕ₀) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
49	45, 47, 48	syl2anc 585	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))) ∈ ℤ)
50	38, 49	zmulcld 12672	. . 3 ⊢ (((𝜑 ∧ 𝑗 ∈ (1...𝑀)) ∧ ¬ 𝑃 < (𝐶‘𝑗)) → (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗)))) ∈ ℤ)
51	2, 50	ifclda 4564	. 2 ⊢ ((𝜑 ∧ 𝑗 ∈ (1...𝑀)) → if(𝑃 < (𝐶‘𝑗), 0, (((!‘𝑃) / (!‘(𝑃 − (𝐶‘𝑗)))) · ((𝐽 − 𝑗)↑(𝑃 − (𝐶‘𝑗))))) ∈ ℤ)
52	1, 51	fprodzcl 15898	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 397 ∈ wcel 2107 ⊆ wss 3949 ifcif 4529 class class class wbr 5149 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 ℝcr 11109 0cc0 11110 1c1 11111 + caddc 11113 · cmul 11115 < clt 11248 ≤ cle 11249 − cmin 11444 / cdiv 11871 ℕcn 12212 ℕ₀cn0 12472 ℤcz 12558 ...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-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-inf2 9636 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 ax-pre-sup 11188

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-int 4952 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-se 5633 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-isom 6553 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-1o 8466 df-er 8703 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9437 df-oi 9505 df-card 9934 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-2 12275 df-3 12276 df-n0 12473 df-z 12559 df-uz 12823 df-rp 12975 df-fz 13485 df-fzo 13628 df-seq 13967 df-exp 14028 df-fac 14234 df-bc 14263 df-hash 14291 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-clim 15432 df-prod 15850

This theorem is referenced by: etransclem15 44965 etransclem28 44978

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