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Theorem lmbr3 45368
Description: Express the binary relation "sequence 𝐹 converges to point 𝑃 " in a metric space using an arbitrary upper set of integers. (Contributed by Glauco Siliprandi, 5-Feb-2022.)
Hypotheses
Ref Expression
lmbr3.1 𝑘𝐹
lmbr3.2 (𝜑𝐽 ∈ (TopOn‘𝑋))
Assertion
Ref Expression
lmbr3 (𝜑 → (𝐹(⇝𝑡𝐽)𝑃 ↔ (𝐹 ∈ (𝑋pm ℂ) ∧ 𝑃𝑋 ∧ ∀𝑢𝐽 (𝑃𝑢 → ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))))
Distinct variable groups:   𝑗,𝐹,𝑢   𝑢,𝐽   𝑢,𝑃   𝑗,𝑘,𝑢
Allowed substitution hints:   𝜑(𝑢,𝑗,𝑘)   𝑃(𝑗,𝑘)   𝐹(𝑘)   𝐽(𝑗,𝑘)   𝑋(𝑢,𝑗,𝑘)

Proof of Theorem lmbr3
Dummy variables 𝑖 𝑙 𝑣 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 lmbr3.2 . . 3 (𝜑𝐽 ∈ (TopOn‘𝑋))
21lmbr3v 45366 . 2 (𝜑 → (𝐹(⇝𝑡𝐽)𝑃 ↔ (𝐹 ∈ (𝑋pm ℂ) ∧ 𝑃𝑋 ∧ ∀𝑣𝐽 (𝑃𝑣 → ∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣)))))
3 eleq2w 2810 . . . . 5 (𝑣 = 𝑢 → (𝑃𝑣𝑃𝑢))
4 eleq2w 2810 . . . . . . . 8 (𝑣 = 𝑢 → ((𝐹𝑙) ∈ 𝑣 ↔ (𝐹𝑙) ∈ 𝑢))
54anbi2d 628 . . . . . . 7 (𝑣 = 𝑢 → ((𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣) ↔ (𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢)))
65rexralbidv 3211 . . . . . 6 (𝑣 = 𝑢 → (∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣) ↔ ∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢)))
7 fveq2 6901 . . . . . . . . 9 (𝑖 = 𝑗 → (ℤ𝑖) = (ℤ𝑗))
87raleqdv 3315 . . . . . . . 8 (𝑖 = 𝑗 → (∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢) ↔ ∀𝑙 ∈ (ℤ𝑗)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢)))
9 nfcv 2892 . . . . . . . . . . 11 𝑘𝑙
10 lmbr3.1 . . . . . . . . . . . 12 𝑘𝐹
1110nfdm 5957 . . . . . . . . . . 11 𝑘dom 𝐹
129, 11nfel 2907 . . . . . . . . . 10 𝑘 𝑙 ∈ dom 𝐹
1310, 9nffv 6911 . . . . . . . . . . 11 𝑘(𝐹𝑙)
14 nfcv 2892 . . . . . . . . . . 11 𝑘𝑢
1513, 14nfel 2907 . . . . . . . . . 10 𝑘(𝐹𝑙) ∈ 𝑢
1612, 15nfan 1895 . . . . . . . . 9 𝑘(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢)
17 nfv 1910 . . . . . . . . 9 𝑙(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)
18 eleq1w 2809 . . . . . . . . . 10 (𝑙 = 𝑘 → (𝑙 ∈ dom 𝐹𝑘 ∈ dom 𝐹))
19 fveq2 6901 . . . . . . . . . . 11 (𝑙 = 𝑘 → (𝐹𝑙) = (𝐹𝑘))
2019eleq1d 2811 . . . . . . . . . 10 (𝑙 = 𝑘 → ((𝐹𝑙) ∈ 𝑢 ↔ (𝐹𝑘) ∈ 𝑢))
2118, 20anbi12d 630 . . . . . . . . 9 (𝑙 = 𝑘 → ((𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢) ↔ (𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))
2216, 17, 21cbvralw 3294 . . . . . . . 8 (∀𝑙 ∈ (ℤ𝑗)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢) ↔ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢))
238, 22bitrdi 286 . . . . . . 7 (𝑖 = 𝑗 → (∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢) ↔ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))
2423cbvrexvw 3226 . . . . . 6 (∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑢) ↔ ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢))
256, 24bitrdi 286 . . . . 5 (𝑣 = 𝑢 → (∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣) ↔ ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))
263, 25imbi12d 343 . . . 4 (𝑣 = 𝑢 → ((𝑃𝑣 → ∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣)) ↔ (𝑃𝑢 → ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢))))
2726cbvralvw 3225 . . 3 (∀𝑣𝐽 (𝑃𝑣 → ∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣)) ↔ ∀𝑢𝐽 (𝑃𝑢 → ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))
28273anbi3i 1156 . 2 ((𝐹 ∈ (𝑋pm ℂ) ∧ 𝑃𝑋 ∧ ∀𝑣𝐽 (𝑃𝑣 → ∃𝑖 ∈ ℤ ∀𝑙 ∈ (ℤ𝑖)(𝑙 ∈ dom 𝐹 ∧ (𝐹𝑙) ∈ 𝑣))) ↔ (𝐹 ∈ (𝑋pm ℂ) ∧ 𝑃𝑋 ∧ ∀𝑢𝐽 (𝑃𝑢 → ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢))))
292, 28bitrdi 286 1 (𝜑 → (𝐹(⇝𝑡𝐽)𝑃 ↔ (𝐹 ∈ (𝑋pm ℂ) ∧ 𝑃𝑋 ∧ ∀𝑢𝐽 (𝑃𝑢 → ∃𝑗 ∈ ℤ ∀𝑘 ∈ (ℤ𝑗)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑢)))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 394  w3a 1084  wcel 2099  wnfc 2876  wral 3051  wrex 3060   class class class wbr 5153  dom cdm 5682  cfv 6554  (class class class)co 7424  pm cpm 8856  cc 11156  cz 12610  cuz 12874  TopOnctopon 22903  𝑡clm 23221
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1906  ax-6 1964  ax-7 2004  ax-8 2101  ax-9 2109  ax-10 2130  ax-11 2147  ax-12 2167  ax-ext 2697  ax-sep 5304  ax-nul 5311  ax-pow 5369  ax-pr 5433  ax-un 7746  ax-cnex 11214  ax-resscn 11215  ax-1cn 11216  ax-addrcl 11219  ax-rnegex 11229  ax-cnre 11231  ax-pre-lttri 11232  ax-pre-lttrn 11233
This theorem depends on definitions:  df-bi 206  df-an 395  df-or 846  df-3or 1085  df-3an 1086  df-tru 1537  df-fal 1547  df-ex 1775  df-nf 1779  df-sb 2061  df-mo 2529  df-eu 2558  df-clab 2704  df-cleq 2718  df-clel 2803  df-nfc 2878  df-ne 2931  df-nel 3037  df-ral 3052  df-rex 3061  df-rab 3420  df-v 3464  df-sbc 3777  df-csb 3893  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4326  df-if 4534  df-pw 4609  df-sn 4634  df-pr 4636  df-op 4640  df-uni 4914  df-iun 5003  df-br 5154  df-opab 5216  df-mpt 5237  df-id 5580  df-po 5594  df-so 5595  df-xp 5688  df-rel 5689  df-cnv 5690  df-co 5691  df-dm 5692  df-rn 5693  df-res 5694  df-ima 5695  df-iota 6506  df-fun 6556  df-fn 6557  df-f 6558  df-f1 6559  df-fo 6560  df-f1o 6561  df-fv 6562  df-ov 7427  df-oprab 7428  df-mpo 7429  df-1st 8003  df-2nd 8004  df-er 8734  df-pm 8858  df-en 8975  df-dom 8976  df-sdom 8977  df-pnf 11300  df-mnf 11301  df-xr 11302  df-ltxr 11303  df-le 11304  df-neg 11497  df-z 12611  df-uz 12875  df-top 22887  df-topon 22904  df-lm 23224
This theorem is referenced by:  xlimbr  45448  xlimmnfvlem1  45453  xlimmnfvlem2  45454  xlimpnfvlem1  45457  xlimpnfvlem2  45458
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