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Theorem flimval 22575
 Description: The set of limit points of a filter. (Contributed by Jeff Hankins, 4-Sep-2009.) (Revised by Stefan O'Rear, 6-Aug-2015.)
Hypothesis
Ref Expression
flimval.1 𝑋 = 𝐽
Assertion
Ref Expression
flimval ((𝐽 ∈ Top ∧ 𝐹 ran Fil) → (𝐽 fLim 𝐹) = {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)})
Distinct variable groups:   𝑥,𝐹   𝑥,𝐽   𝑥,𝑋

Proof of Theorem flimval
Dummy variables 𝑓 𝑗 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 flimval.1 . . . . 5 𝑋 = 𝐽
21topopn 21518 . . . 4 (𝐽 ∈ Top → 𝑋𝐽)
32adantr 484 . . 3 ((𝐽 ∈ Top ∧ 𝐹 ran Fil) → 𝑋𝐽)
4 rabexg 5198 . . 3 (𝑋𝐽 → {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)} ∈ V)
53, 4syl 17 . 2 ((𝐽 ∈ Top ∧ 𝐹 ran Fil) → {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)} ∈ V)
6 simpl 486 . . . . . 6 ((𝑗 = 𝐽𝑓 = 𝐹) → 𝑗 = 𝐽)
76unieqd 4814 . . . . 5 ((𝑗 = 𝐽𝑓 = 𝐹) → 𝑗 = 𝐽)
87, 1eqtr4di 2851 . . . 4 ((𝑗 = 𝐽𝑓 = 𝐹) → 𝑗 = 𝑋)
96fveq2d 6649 . . . . . . 7 ((𝑗 = 𝐽𝑓 = 𝐹) → (nei‘𝑗) = (nei‘𝐽))
109fveq1d 6647 . . . . . 6 ((𝑗 = 𝐽𝑓 = 𝐹) → ((nei‘𝑗)‘{𝑥}) = ((nei‘𝐽)‘{𝑥}))
11 simpr 488 . . . . . 6 ((𝑗 = 𝐽𝑓 = 𝐹) → 𝑓 = 𝐹)
1210, 11sseq12d 3948 . . . . 5 ((𝑗 = 𝐽𝑓 = 𝐹) → (((nei‘𝑗)‘{𝑥}) ⊆ 𝑓 ↔ ((nei‘𝐽)‘{𝑥}) ⊆ 𝐹))
138pweqd 4516 . . . . . 6 ((𝑗 = 𝐽𝑓 = 𝐹) → 𝒫 𝑗 = 𝒫 𝑋)
1411, 13sseq12d 3948 . . . . 5 ((𝑗 = 𝐽𝑓 = 𝐹) → (𝑓 ⊆ 𝒫 𝑗𝐹 ⊆ 𝒫 𝑋))
1512, 14anbi12d 633 . . . 4 ((𝑗 = 𝐽𝑓 = 𝐹) → ((((nei‘𝑗)‘{𝑥}) ⊆ 𝑓𝑓 ⊆ 𝒫 𝑗) ↔ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)))
168, 15rabeqbidv 3433 . . 3 ((𝑗 = 𝐽𝑓 = 𝐹) → {𝑥 𝑗 ∣ (((nei‘𝑗)‘{𝑥}) ⊆ 𝑓𝑓 ⊆ 𝒫 𝑗)} = {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)})
17 df-flim 22551 . . 3 fLim = (𝑗 ∈ Top, 𝑓 ran Fil ↦ {𝑥 𝑗 ∣ (((nei‘𝑗)‘{𝑥}) ⊆ 𝑓𝑓 ⊆ 𝒫 𝑗)})
1816, 17ovmpoga 7284 . 2 ((𝐽 ∈ Top ∧ 𝐹 ran Fil ∧ {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)} ∈ V) → (𝐽 fLim 𝐹) = {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)})
195, 18mpd3an3 1459 1 ((𝐽 ∈ Top ∧ 𝐹 ran Fil) → (𝐽 fLim 𝐹) = {𝑥𝑋 ∣ (((nei‘𝐽)‘{𝑥}) ⊆ 𝐹𝐹 ⊆ 𝒫 𝑋)})
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 399   = wceq 1538   ∈ wcel 2111  {crab 3110  Vcvv 3441   ⊆ wss 3881  𝒫 cpw 4497  {csn 4525  ∪ cuni 4800  ran crn 5520  ‘cfv 6324  (class class class)co 7135  Topctop 21505  neicnei 21709  Filcfil 22457   fLim cflim 22546 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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-nul 5174  ax-pr 5295 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ral 3111  df-rex 3112  df-rab 3115  df-v 3443  df-sbc 3721  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-opab 5093  df-id 5425  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-iota 6283  df-fun 6326  df-fv 6332  df-ov 7138  df-oprab 7139  df-mpo 7140  df-top 21506  df-flim 22551 This theorem is referenced by:  elflim2  22576
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