Theorem climfveqmpt3 46194

Description: Two functions that are eventually equal to one another have the same limit. TODO: this is more general than climfveqmpt 46183 and should replace it. (Contributed by Glauco Siliprandi, 23-Oct-2021.)

Hypotheses

Ref	Expression
climfveqmpt3.k	⊢ Ⅎ𝑘𝜑
climfveqmpt3.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
climfveqmpt3.z	⊢ 𝑍 = (ℤ≥‘𝑀)
climfveqmpt3.a	⊢ (𝜑 → 𝐴 ∈ 𝑉)
climfveqmpt3.c	⊢ (𝜑 → 𝐶 ∈ 𝑊)
climfveqmpt3.i	⊢ (𝜑 → 𝑍 ⊆ 𝐴)
climfveqmpt3.s	⊢ (𝜑 → 𝑍 ⊆ 𝐶)
climfveqmpt3.b	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ 𝑈)
climfveqmpt3.d	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 = 𝐷)

Assertion

Ref	Expression
climfveqmpt3	⊢ (𝜑 → ( ⇝ ‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = ( ⇝ ‘(𝑘 ∈ 𝐶 ↦ 𝐷)))

Distinct variable groups:   𝐴,𝑘   𝐶,𝑘   𝑈,𝑘   𝑘,𝑍

Allowed substitution hints:   𝜑(𝑘)   𝐵(𝑘)   𝐷(𝑘)   𝑀(𝑘)   𝑉(𝑘)   𝑊(𝑘)

Proof of Theorem climfveqmpt3

Dummy variable 𝑗 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		climfveqmpt3.z	. 2 ⊢ 𝑍 = (ℤ≥‘𝑀)
2		climfveqmpt3.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
3	2	mptexd 7193	. 2 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵) ∈ V)
4		climfveqmpt3.c	. . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑊)
5	4	mptexd 7193	. 2 ⊢ (𝜑 → (𝑘 ∈ 𝐶 ↦ 𝐷) ∈ V)
6		climfveqmpt3.m	. 2 ⊢ (𝜑 → 𝑀 ∈ ℤ)
7		climfveqmpt3.k	. . . . . 6 ⊢ Ⅎ𝑘𝜑
8		nfv 1924	. . . . . 6 ⊢ Ⅎ𝑘 𝑗 ∈ 𝑍
9	7, 8	nfan 1909	. . . . 5 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑗 ∈ 𝑍)
10		nfcv 2914	. . . . . . 7 ⊢ Ⅎ𝑘𝑗
11	10	nfcsb1 3866	. . . . . 6 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐵
12	10	nfcsb1 3866	. . . . . 6 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐷
13	11, 12	nfeq 2927	. . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑘⦌𝐷
14	9, 13	nfim 1906	. . . 4 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑘⦌𝐷)
15		eleq1w 2835	. . . . . 6 ⊢ (𝑘 = 𝑗 → (𝑘 ∈ 𝑍 ↔ 𝑗 ∈ 𝑍))
16	15	anbi2d 638	. . . . 5 ⊢ (𝑘 = 𝑗 → ((𝜑 ∧ 𝑘 ∈ 𝑍) ↔ (𝜑 ∧ 𝑗 ∈ 𝑍)))
17		csbeq1a 3857	. . . . . 6 ⊢ (𝑘 = 𝑗 → 𝐵 = ⦋𝑗 / 𝑘⦌𝐵)
18		csbeq1a 3857	. . . . . 6 ⊢ (𝑘 = 𝑗 → 𝐷 = ⦋𝑗 / 𝑘⦌𝐷)
19	17, 18	eqeq12d 2768	. . . . 5 ⊢ (𝑘 = 𝑗 → (𝐵 = 𝐷 ↔ ⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑘⦌𝐷))
20	16, 19	imbi12d 346	. . . 4 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 = 𝐷) ↔ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑘⦌𝐷)))
21		climfveqmpt3.d	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 = 𝐷)
22	14, 20, 21	chvarfv 2265	. . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑘⦌𝐷)
23		climfveqmpt3.i	. . . . . 6 ⊢ (𝜑 → 𝑍 ⊆ 𝐴)
24	23	adantr 483	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑍 ⊆ 𝐴)
25		simpr 487	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ 𝑍)
26	24, 25	sseldd 3928	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ 𝐴)
27		nfcv 2914	. . . . . . 7 ⊢ Ⅎ𝑘𝑈
28	11, 27	nfel 2928	. . . . . 6 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈
29	9, 28	nfim 1906	. . . . 5 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈)
30	17	eleq1d 2837	. . . . . 6 ⊢ (𝑘 = 𝑗 → (𝐵 ∈ 𝑈 ↔ ⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈))
31	16, 30	imbi12d 346	. . . . 5 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ 𝑈) ↔ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈)))
32		climfveqmpt3.b	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ 𝑈)
33	29, 31, 32	chvarfv 2265	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈)
34		eqid 2752	. . . . 5 ⊢ (𝑘 ∈ 𝐴 ↦ 𝐵) = (𝑘 ∈ 𝐴 ↦ 𝐵)
35	10, 11, 17, 34	fvmptf 6982	. . . 4 ⊢ ((𝑗 ∈ 𝐴 ∧ ⦋𝑗 / 𝑘⦌𝐵 ∈ 𝑈) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = ⦋𝑗 / 𝑘⦌𝐵)
36	26, 33, 35	syl2anc 592	. . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = ⦋𝑗 / 𝑘⦌𝐵)
37		climfveqmpt3.s	. . . . . 6 ⊢ (𝜑 → 𝑍 ⊆ 𝐶)
38	37	adantr 483	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑍 ⊆ 𝐶)
39	38, 25	sseldd 3928	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ 𝐶)
40	22, 33	eqeltrrd 2853	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ⦋𝑗 / 𝑘⦌𝐷 ∈ 𝑈)
41		eqid 2752	. . . . 5 ⊢ (𝑘 ∈ 𝐶 ↦ 𝐷) = (𝑘 ∈ 𝐶 ↦ 𝐷)
42	10, 12, 18, 41	fvmptf 6982	. . . 4 ⊢ ((𝑗 ∈ 𝐶 ∧ ⦋𝑗 / 𝑘⦌𝐷 ∈ 𝑈) → ((𝑘 ∈ 𝐶 ↦ 𝐷)‘𝑗) = ⦋𝑗 / 𝑘⦌𝐷)
43	39, 40, 42	syl2anc 592	. . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝑘 ∈ 𝐶 ↦ 𝐷)‘𝑗) = ⦋𝑗 / 𝑘⦌𝐷)
44	22, 36, 43	3eqtr4d 2797	. 2 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝑘 ∈ 𝐴 ↦ 𝐵)‘𝑗) = ((𝑘 ∈ 𝐶 ↦ 𝐷)‘𝑗))
45	1, 3, 5, 6, 44	climfveq 46181	1 ⊢ (𝜑 → ( ⇝ ‘(𝑘 ∈ 𝐴 ↦ 𝐵)) = ( ⇝ ‘(𝑘 ∈ 𝐶 ↦ 𝐷)))

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1550  Ⅎwnf 1793   ∈ wcel 2132  Vcvv 3444  ⦋csb 3843   ⊆ wss 3895   ↦ cmpt 5171  ‘cfv 6506  ℤcz 12554  ℤ_≥cuz 12825   ⇝ cli 15483

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1805  ax-4 1819  ax-5 1920  ax-6 1977  ax-7 2018  ax-8 2134  ax-9 2142  ax-10 2165  ax-11 2181  ax-12 2202  ax-ext 2724  ax-rep 5217  ax-sep 5236  ax-nul 5246  ax-pow 5312  ax-pr 5380  ax-un 7703  ax-cnex 11115  ax-resscn 11116  ax-1cn 11117  ax-icn 11118  ax-addcl 11119  ax-addrcl 11120  ax-mulcl 11121  ax-mulrcl 11122  ax-mulcom 11123  ax-addass 11124  ax-mulass 11125  ax-distr 11126  ax-i2m1 11127  ax-1ne0 11128  ax-1rid 11129  ax-rnegex 11130  ax-rrecex 11131  ax-cnre 11132  ax-pre-lttri 11133  ax-pre-lttrn 11134  ax-pre-ltadd 11135  ax-pre-mulgt0 11136  ax-pre-sup 11137

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3or 1096  df-3an 1097  df-tru 1553  df-fal 1563  df-ex 1790  df-nf 1794  df-sb 2081  df-mo 2556  df-eu 2586  df-clab 2731  df-cleq 2744  df-clel 2827  df-nfc 2901  df-ne 2948  df-nel 3052  df-ral 3067  df-rex 3077  df-rmo 3357  df-reu 3358  df-rab 3405  df-v 3446  df-sbc 3736  df-csb 3844  df-dif 3898  df-un 3900  df-in 3902  df-ss 3912  df-pss 3915  df-nul 4277  df-if 4471  df-pw 4547  df-sn 4573  df-pr 4575  df-op 4579  df-uni 4856  df-iun 4941  df-br 5091  df-opab 5153  df-mpt 5172  df-tr 5198  df-id 5531  df-eprel 5536  df-po 5544  df-so 5545  df-fr 5589  df-we 5591  df-xp 5642  df-rel 5643  df-cnv 5644  df-co 5645  df-dm 5646  df-rn 5647  df-res 5648  df-ima 5649  df-pred 6273  df-ord 6334  df-on 6335  df-lim 6336  df-suc 6337  df-iota 6462  df-fun 6508  df-fn 6509  df-f 6510  df-f1 6511  df-fo 6512  df-f1o 6513  df-fv 6514  df-riota 7338  df-ov 7384  df-oprab 7385  df-mpo 7386  df-om 7832  df-2nd 7956  df-frecs 8246  df-wrecs 8277  df-recs 8326  df-rdg 8365  df-er 8662  df-en 8913  df-dom 8914  df-sdom 8915  df-sup 9374  df-pnf 11204  df-mnf 11205  df-xr 11206  df-ltxr 11207  df-le 11208  df-sub 11402  df-neg 11403  df-div 11831  df-nn 12197  df-2 12266  df-3 12267  df-n0 12468  df-z 12555  df-uz 12826  df-rp 12980  df-seq 14001  df-exp 14061  df-cj 15098  df-re 15099  df-im 15100  df-sqrt 15234  df-abs 15235  df-clim 15487

This theorem is referenced by:  smflimmpt  47322