etransclem10 - Mathbox for Glauco Siliprandi

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Theorem etransclem10 45260

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 12575	. 2 ⊢ ((𝜑 ∧ (𝑃 − 1) < (𝐶‘0)) → 0 ∈ ℤ)
2		0zd 12575	. . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℤ)
3		etransclem10.n	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ ℕ)
4		nnm1nn0 12518	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
5	3, 4	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℕ₀)
6	5	nn0zd 12589	. . . . . . . . 9 ⊢ (𝜑 → (𝑃 − 1) ∈ ℤ)
7		etransclem10.c	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐶:(0...𝑀)⟶(0...𝑁))
8		etransclem10.m	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
9		nn0uz 12869	. . . . . . . . . . . . . 14 ⊢ ℕ₀ = (ℤ_≥‘0)
10	8, 9	eleqtrdi 2842	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑀 ∈ (ℤ_≥‘0))
11		eluzfz1 13513	. . . . . . . . . . . . 13 ⊢ (𝑀 ∈ (ℤ_≥‘0) → 0 ∈ (0...𝑀))
12	10, 11	syl 17	. . . . . . . . . . . 12 ⊢ (𝜑 → 0 ∈ (0...𝑀))
13	7, 12	ffvelcdmd 7088	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐶‘0) ∈ (0...𝑁))
14	13	elfzelzd 13507	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ ℤ)
15	6, 14	zsubcld 12676	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ)
16	2, 6, 15	3jca 1127	. . . . . . . 8 ⊢ (𝜑 → (0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ))
17	16	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (0 ∈ ℤ ∧ (𝑃 − 1) ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ))
18	14	zred 12671	. . . . . . . . . 10 ⊢ (𝜑 → (𝐶‘0) ∈ ℝ)
19	18	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐶‘0) ∈ ℝ)
20	5	nn0red 12538	. . . . . . . . . 10 ⊢ (𝜑 → (𝑃 − 1) ∈ ℝ)
21	20	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝑃 − 1) ∈ ℝ)
22		simpr 484	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ¬ (𝑃 − 1) < (𝐶‘0))
23	19, 21, 22	nltled 11369	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐶‘0) ≤ (𝑃 − 1))
24	21, 19	subge0d 11809	. . . . . . . 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 13509	. . . . . . . . . 10 ⊢ ((𝐶‘0) ∈ (0...𝑁) → 0 ≤ (𝐶‘0))
27	13, 26	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 0 ≤ (𝐶‘0))
28	27	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → 0 ≤ (𝐶‘0))
29	21, 19	subge02d 11811	. . . . . . . 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 515	. . . . . 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 13496	. . . . . 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 14291	. . . . 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 12590	. . 3 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) ∈ ℤ)
37		etransclem10.j	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
38	37	adantr 480	. . . 4 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → 𝐽 ∈ ℤ)
39	15	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ∈ ℤ)
40		elnn0z 12576	. . . . 5 ⊢ (((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀ ↔ (((𝑃 − 1) − (𝐶‘0)) ∈ ℤ ∧ 0 ≤ ((𝑃 − 1) − (𝐶‘0))))
41	39, 25, 40	sylanbrc 582	. . . 4 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → ((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀)
42		zexpcl 14047	. . . 4 ⊢ ((𝐽 ∈ ℤ ∧ ((𝑃 − 1) − (𝐶‘0)) ∈ ℕ₀) → (𝐽↑((𝑃 − 1) − (𝐶‘0))) ∈ ℤ)
43	38, 41, 42	syl2anc 583	. . 3 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (𝐽↑((𝑃 − 1) − (𝐶‘0))) ∈ ℤ)
44	36, 43	zmulcld 12677	. 2 ⊢ ((𝜑 ∧ ¬ (𝑃 − 1) < (𝐶‘0)) → (((!‘(𝑃 − 1)) / (!‘((𝑃 − 1) − (𝐶‘0)))) · (𝐽↑((𝑃 − 1) − (𝐶‘0)))) ∈ ℤ)
45	1, 44	ifclda 4564	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 395 ∧ w3a 1086 ∈ wcel 2105 ifcif 4529 class class class wbr 5149 ⟶wf 6540 ‘cfv 6544 (class class class)co 7412 ℝcr 11112 0cc0 11113 1c1 11114 · cmul 11118 < clt 11253 ≤ cle 11254 − cmin 11449 / cdiv 11876 ℕcn 12217 ℕ₀cn0 12477 ℤcz 12563 ℤ_≥cuz 12827 ...cfz 13489 ↑cexp 14032 !cfa 14238

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7728 ax-cnex 11169 ax-resscn 11170 ax-1cn 11171 ax-icn 11172 ax-addcl 11173 ax-addrcl 11174 ax-mulcl 11175 ax-mulrcl 11176 ax-mulcom 11177 ax-addass 11178 ax-mulass 11179 ax-distr 11180 ax-i2m1 11181 ax-1ne0 11182 ax-1rid 11183 ax-rnegex 11184 ax-rrecex 11185 ax-cnre 11186 ax-pre-lttri 11187 ax-pre-lttrn 11188 ax-pre-ltadd 11189 ax-pre-mulgt0 11190

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3375 df-reu 3376 df-rab 3432 df-v 3475 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-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-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-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7859 df-1st 7978 df-2nd 7979 df-frecs 8269 df-wrecs 8300 df-recs 8374 df-rdg 8413 df-er 8706 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11451 df-neg 11452 df-div 11877 df-nn 12218 df-n0 12478 df-z 12564 df-uz 12828 df-rp 12980 df-fz 13490 df-seq 13972 df-exp 14033 df-fac 14239 df-bc 14268

This theorem is referenced by: etransclem25 45275 etransclem26 45276 etransclem35 45285 etransclem37 45287

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