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Theorem cldmre 23068
Description: The closed sets of a topology comprise a Moore system on the points of the topology. (Contributed by Stefan O'Rear, 31-Jan-2015.)
Hypothesis
Ref Expression
clscld.1 𝑋 = 𝐽
Assertion
Ref Expression
cldmre (𝐽 ∈ Top → (Clsd‘𝐽) ∈ (Moore‘𝑋))

Proof of Theorem cldmre
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 clscld.1 . . . 4 𝑋 = 𝐽
21cldss2 23020 . . 3 (Clsd‘𝐽) ⊆ 𝒫 𝑋
32a1i 11 . 2 (𝐽 ∈ Top → (Clsd‘𝐽) ⊆ 𝒫 𝑋)
41topcld 23025 . 2 (𝐽 ∈ Top → 𝑋 ∈ (Clsd‘𝐽))
5 intcld 23030 . . . 4 ((𝑥 ≠ ∅ ∧ 𝑥 ⊆ (Clsd‘𝐽)) → 𝑥 ∈ (Clsd‘𝐽))
65ancoms 459 . . 3 ((𝑥 ⊆ (Clsd‘𝐽) ∧ 𝑥 ≠ ∅) → 𝑥 ∈ (Clsd‘𝐽))
763adant1 1136 . 2 ((𝐽 ∈ Top ∧ 𝑥 ⊆ (Clsd‘𝐽) ∧ 𝑥 ≠ ∅) → 𝑥 ∈ (Clsd‘𝐽))
83, 4, 7ismred 17562 1 (𝐽 ∈ Top → (Clsd‘𝐽) ∈ (Moore‘𝑋))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1547  wcel 2119  wne 2935  wss 3890  c0 4268  𝒫 cpw 4536   cuni 4845   cint 4884  cfv 6492  Moorecmre 17542  Topctop 22883  Clsdccld 23006
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-sep 5225  ax-nul 5235  ax-pow 5301  ax-pr 5369  ax-un 7685
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ne 2936  df-ral 3055  df-rex 3065  df-rab 3393  df-v 3434  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-int 4885  df-iun 4930  df-iin 4931  df-br 5080  df-opab 5142  df-mpt 5161  df-id 5520  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-iota 6448  df-fun 6494  df-fn 6495  df-fv 6500  df-mre 17546  df-top 22884  df-cld 23009
This theorem is referenced by:  mrccls  23069  cldmreon  23084  mreclatdemoBAD  23086
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