etransclem10 - Mathbox for Glauco Siliprandi

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Theorem etransclem10 45045

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

**Hypotheses**
Ref	Expression
etransclem10.n	⊢ (𝜑 → 𝑃 ∈ ℕ)
etransclem10.m	⊢ (𝜑 → 𝑀 ∈ ℕ₀)
etransclem10.c	⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
etransclem10.j	⊢ (𝜑 → 𝐽 ∈ ℤ)

**Assertion**
Ref	Expression
etransclem10	⊢ (𝜑 → if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) ∈ ℤ)

**Proof of Theorem etransclem10**
Step	Hyp	Ref	Expression
1		0zd 12572	. 2 ⊢ ((𝜑 ∧ (𝑃 − 1) < (𝐶‘0)) → 0 ∈ ℤ)
2		0zd 12572	. . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℤ)
3		etransclem10.n	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ ℕ)
4		nnm1nn0 12515	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
5	3, 4	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℕ₀)
6	5	nn0zd 12586	. . . . . . . . 9 ⊢ (𝜑 → (𝑃 − 1) ∈ ℤ)
7		etransclem10.c	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
8		etransclem10.m	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
9		nn0uz 12866	. . . . . . . . . . . . . 14 ⊢ ℕ₀ = (ℤ_≥‘0)
10	8, 9	eleqtrdi 2843	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑀 ∈ (ℤ_≥‘0))
11		eluzfz1 13510	. . . . . . . . . . . . 13 ⊢ (𝑀 ∈ (ℤ_≥‘0) → 0 ∈ (0...𝑀))
12	10, 11	syl 17	. . . . . . . . . . . 12 ⊢ (𝜑 → 0 ∈ (0...𝑀))
13	7, 12	ffvelcdmd 7087	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐶‘0) ∈ (0...𝑁))
14	13	elfzelzd 13504	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ ℤ)
15	6, 14	zsubcld 12673	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ)
16	2, 6, 15	3jca 1128	. . . . . . . 8 ⊢ (𝜑 → (0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ))
17	16	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ))
18	14	zred 12668	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ ℝ)
19	18	adantr 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐶‘0) ∈ ℝ)
20	5	nn0red 12535	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℝ)
21	20	adantr 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝑃 − 1) ∈ ℝ)
22		simpr 485	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ¬ (𝑃 − 1) < (𝐶‘0))
23	19, 21, 22	nltled 11366	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐶‘0) ≤ (𝑃 − 1))
24	21, 19	subge0d 11806	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (0 ≤ ((𝑃 − 1) − (𝐶‘0)) ↔ (𝐶‘0) ≤ (𝑃 − 1)))
25	23, 24	mpbird 256	. . . . . . 7 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → 0 ≤ ((𝑃 − 1) − (𝐶‘0)))
26		elfzle1 13506	. . . . . . . . . 10 ⊢ ((𝐶‘0) ∈ (0...𝑁) → 0 ≤ (𝐶‘0))
27	13, 26	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 0 ≤ (𝐶‘0))
28	27	adantr 481	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → 0 ≤ (𝐶‘0))
29	21, 19	subge02d 11808	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (0 ≤ (𝐶‘0) ↔ ((𝑃 − 1) − (𝐶‘0)) ≤ (𝑃 − 1)))
30	28, 29	mpbid 231	. . . . . . 7 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ≤ (𝑃 − 1))
31	17, 25, 30	jca32 516	. . . . . 6 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ) ∧ (0 ≤ ((𝑃 − 1) − (𝐶‘0)) ∧ ((𝑃 − 1) − (𝐶‘0)) ≤ (𝑃 − 1))))
32		elfz2 13493	. . . . . 6 ⊢ (((𝑃 − 1) − (𝐶‘0)) ∈ (0...(𝑃 − 1)) ↔ ((0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ) ∧ (0 ≤ ((𝑃 − 1) − (𝐶‘0)) ∧ ((𝑃 − 1) − (𝐶‘0)) ≤ (𝑃 − 1))))
33	31, 32	sylibr 233	. . . . 5 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ∈ (0...(𝑃 − 1)))
34		permnn 14288	. . . . 5 ⊢ (((𝑃 − 1) − (𝐶‘0)) ∈ (0...(𝑃 − 1)) → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) ∈ ℕ)
35	33, 34	syl 17	. . . 4 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) ∈ ℕ)
36	35	nnzd 12587	. . 3 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) ∈ ℤ)
37		etransclem10.j	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
38	37	adantr 481	. . . 4 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → 𝐽 ∈ ℤ)
39	15	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ)
40		elnn0z 12573	. . . . 5 ⊢ (((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀ ↔ (((𝑃 − 1) − (𝐶‘0)) ∈ ℤ ∧ 0 ≤ ((𝑃 − 1) − (𝐶‘0))))
41	39, 25, 40	sylanbrc 583	. . . 4 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀)
42		zexpcl 14044	. . . 4 ⊢ ((𝐽 ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀) → (𝐽↑((𝑃 − 1) − (𝐶‘0))) ∈ ℤ)
43	38, 41, 42	syl2anc 584	. . 3 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐽↑((𝑃 − 1) − (𝐶‘0))) ∈ ℤ)
44	36, 43	zmulcld 12674	. 2 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0)))) ∈ ℤ)
45	1, 44	ifclda 4563	1 ⊢ (𝜑 → if((𝑃 − 1) < (𝐶‘0), 0, (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0))))) ∈ ℤ)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 ∧ w3a 1087 ∈ wcel 2106 ifcif 4528 class class class wbr 5148 ⟶wf 6539 ‘cfv 6543 (class class class)co 7411 ℝcr 11111 0cc0 11112 1c1 11113 · cmul 11117 < clt 11250 ≤ cle 11251 − cmin 11446 / cdiv 11873 ℕcn 12214 ℕ₀cn0 12474 ℤcz 12560 ℤ_≥cuz 12824 ...cfz 13486 ↑cexp 14029 !cfa 14235

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 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

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 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-div 11874 df-nn 12215 df-n0 12475 df-z 12561 df-uz 12825 df-rp 12977 df-fz 13487 df-seq 13969 df-exp 14030 df-fac 14236 df-bc 14265

This theorem is referenced by: etransclem25 45060 etransclem26 45061 etransclem35 45070 etransclem37 45072

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