climshftlemg - Intuitionistic Logic Explorer

	Intuitionistic Logic Explorer		< Previous Next > Nearby theorems
Mirrors > Home > ILE Home > Th. List > climshftlemg		GIF version

Theorem climshftlemg 11258

Description: A shifted function converges if the original function converges. (Contributed by Mario Carneiro, 5-Nov-2013.)

**Assertion**
Ref	Expression
climshftlemg	⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (𝐹 ⇝ 𝐴 → (𝐹 shift 𝑀) ⇝ 𝐴))

Proof of Theorem climshftlemg Dummy variables 𝑘 𝑚 𝑛 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		zaddcl 9245	. . . . . . . 8 ⊢ ((𝑘 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑘 + 𝑀) ∈ ℤ)
2	1	ancoms 266	. . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑘 + 𝑀) ∈ ℤ)
3	2	adantlr 474	. . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) → (𝑘 + 𝑀) ∈ ℤ)
4		eluzsub 9509	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (𝑛 − 𝑀) ∈ (ℤ_≥‘𝑘))
5	4	3com12 1202	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (𝑛 − 𝑀) ∈ (ℤ_≥‘𝑘))
6	5	3expa 1198	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (𝑛 − 𝑀) ∈ (ℤ_≥‘𝑘))
7		fveq2 5494	. . . . . . . . . . . . 13 ⊢ (𝑚 = (𝑛 − 𝑀) → (𝐹‘𝑚) = (𝐹‘(𝑛 − 𝑀)))
8	7	eleq1d 2239	. . . . . . . . . . . 12 ⊢ (𝑚 = (𝑛 − 𝑀) → ((𝐹‘𝑚) ∈ ℂ ↔ (𝐹‘(𝑛 − 𝑀)) ∈ ℂ))
9	7	oveq1d 5866	. . . . . . . . . . . . . 14 ⊢ (𝑚 = (𝑛 − 𝑀) → ((𝐹‘𝑚) − 𝐴) = ((𝐹‘(𝑛 − 𝑀)) − 𝐴))
10	9	fveq2d 5498	. . . . . . . . . . . . 13 ⊢ (𝑚 = (𝑛 − 𝑀) → (abs‘((𝐹‘𝑚) − 𝐴)) = (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)))
11	10	breq1d 3997	. . . . . . . . . . . 12 ⊢ (𝑚 = (𝑛 − 𝑀) → ((abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥 ↔ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥))
12	8, 11	anbi12d 470	. . . . . . . . . . 11 ⊢ (𝑚 = (𝑛 − 𝑀) → (((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) ↔ ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
13	12	rspcv 2830	. . . . . . . . . 10 ⊢ ((𝑛 − 𝑀) ∈ (ℤ_≥‘𝑘) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
14	6, 13	syl 14	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
15	14	adantllr 478	. . . . . . . 8 ⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
16		simplr 525	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → 𝐹 ∈ 𝑉)
17		zcn 9210	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ)
18	17	ad2antrr 485	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → 𝑀 ∈ ℂ)
19		eluzelcn 9491	. . . . . . . . . . 11 ⊢ (𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀)) → 𝑛 ∈ ℂ)
20	19	adantl 275	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → 𝑛 ∈ ℂ)
21		shftvalg 10793	. . . . . . . . . . . 12 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → ((𝐹 shift 𝑀)‘𝑛) = (𝐹‘(𝑛 − 𝑀)))
22	21	eleq1d 2239	. . . . . . . . . . 11 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → (((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ↔ (𝐹‘(𝑛 − 𝑀)) ∈ ℂ))
23	21	oveq1d 5866	. . . . . . . . . . . . 13 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → (((𝐹 shift 𝑀)‘𝑛) − 𝐴) = ((𝐹‘(𝑛 − 𝑀)) − 𝐴))
24	23	fveq2d 5498	. . . . . . . . . . . 12 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) = (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)))
25	24	breq1d 3997	. . . . . . . . . . 11 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → ((abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥 ↔ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥))
26	22, 25	anbi12d 470	. . . . . . . . . 10 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ ∧ 𝑛 ∈ ℂ) → ((((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥) ↔ ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
27	16, 18, 20, 26	syl3anc 1233	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → ((((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥) ↔ ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
28	27	adantlr 474	. . . . . . . 8 ⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → ((((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥) ↔ ((𝐹‘(𝑛 − 𝑀)) ∈ ℂ ∧ (abs‘((𝐹‘(𝑛 − 𝑀)) − 𝐴)) < 𝑥)))
29	15, 28	sylibrd 168	. . . . . . 7 ⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) ∧ 𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → (((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
30	29	ralrimdva 2550	. . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ∀𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
31		fveq2 5494	. . . . . . . 8 ⊢ (𝑚 = (𝑘 + 𝑀) → (ℤ_≥‘𝑚) = (ℤ_≥‘(𝑘 + 𝑀)))
32	31	raleqdv 2671	. . . . . . 7 ⊢ (𝑚 = (𝑘 + 𝑀) → (∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥) ↔ ∀𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
33	32	rspcev 2834	. . . . . 6 ⊢ (((𝑘 + 𝑀) ∈ ℤ ∧ ∀𝑛 ∈ (ℤ_≥‘(𝑘 + 𝑀))(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)) → ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥))
34	3, 30, 33	syl6an 1427	. . . . 5 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑘 ∈ ℤ) → (∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
35	34	rexlimdva 2587	. . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (∃𝑘 ∈ ℤ ∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
36	35	ralimdv 2538	. . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (∀𝑥 ∈ ℝ⁺ ∃𝑘 ∈ ℤ ∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥) → ∀𝑥 ∈ ℝ⁺ ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥)))
37	36	anim2d 335	. 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → ((𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑘 ∈ ℤ ∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥)) → (𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥))))
38		simpr 109	. . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → 𝐹 ∈ 𝑉)
39		eqidd 2171	. . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑚 ∈ ℤ) → (𝐹‘𝑚) = (𝐹‘𝑚))
40	38, 39	clim 11237	. 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (𝐹 ⇝ 𝐴 ↔ (𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑘 ∈ ℤ ∀𝑚 ∈ (ℤ_≥‘𝑘)((𝐹‘𝑚) ∈ ℂ ∧ (abs‘((𝐹‘𝑚) − 𝐴)) < 𝑥))))
41		ovshftex 10776	. . . . 5 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑀 ∈ ℂ) → (𝐹 shift 𝑀) ∈ V)
42	41	ancoms 266	. . . 4 ⊢ ((𝑀 ∈ ℂ ∧ 𝐹 ∈ 𝑉) → (𝐹 shift 𝑀) ∈ V)
43	17, 42	sylan 281	. . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (𝐹 shift 𝑀) ∈ V)
44		eqidd 2171	. . 3 ⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) ∧ 𝑛 ∈ ℤ) → ((𝐹 shift 𝑀)‘𝑛) = ((𝐹 shift 𝑀)‘𝑛))
45	43, 44	clim 11237	. 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ (𝐴 ∈ ℂ ∧ ∀𝑥 ∈ ℝ⁺ ∃𝑚 ∈ ℤ ∀𝑛 ∈ (ℤ_≥‘𝑚)(((𝐹 shift 𝑀)‘𝑛) ∈ ℂ ∧ (abs‘(((𝐹 shift 𝑀)‘𝑛) − 𝐴)) < 𝑥))))
46	37, 40, 45	3imtr4d 202	1 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → (𝐹 ⇝ 𝐴 → (𝐹 shift 𝑀) ⇝ 𝐴))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 ∧ w3a 973 = wceq 1348 ∈ wcel 2141 ∀wral 2448 ∃wrex 2449 Vcvv 2730 class class class wbr 3987 ‘cfv 5196 (class class class)co 5851 ℂcc 7765 + caddc 7770 < clt 7947 − cmin 8083 ℤcz 9205 ℤ_≥cuz 9480 ℝ⁺crp 9603 shift cshi 10771 abscabs 10954 ⇝ cli 11234

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4102 ax-sep 4105 ax-pow 4158 ax-pr 4192 ax-un 4416 ax-setind 4519 ax-cnex 7858 ax-resscn 7859 ax-1cn 7860 ax-1re 7861 ax-icn 7862 ax-addcl 7863 ax-addrcl 7864 ax-mulcl 7865 ax-addcom 7867 ax-addass 7869 ax-distr 7871 ax-i2m1 7872 ax-0lt1 7873 ax-0id 7875 ax-rnegex 7876 ax-cnre 7878 ax-pre-ltirr 7879 ax-pre-ltwlin 7880 ax-pre-lttrn 7881 ax-pre-ltadd 7883

This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3566 df-sn 3587 df-pr 3588 df-op 3590 df-uni 3795 df-int 3830 df-iun 3873 df-br 3988 df-opab 4049 df-mpt 4050 df-id 4276 df-xp 4615 df-rel 4616 df-cnv 4617 df-co 4618 df-dm 4619 df-rn 4620 df-res 4621 df-ima 4622 df-iota 5158 df-fun 5198 df-fn 5199 df-f 5200 df-f1 5201 df-fo 5202 df-f1o 5203 df-fv 5204 df-riota 5807 df-ov 5854 df-oprab 5855 df-mpo 5856 df-pnf 7949 df-mnf 7950 df-xr 7951 df-ltxr 7952 df-le 7953 df-sub 8085 df-neg 8086 df-inn 8872 df-n0 9129 df-z 9206 df-uz 9481 df-shft 10772 df-clim 11235

This theorem is referenced by: climshft 11260

W3C validator