MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  cldmre Structured version   Visualization version   GIF version

Theorem cldmre 23307
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 23259 . . 3 (Clsd‘𝐽) ⊆ 𝒫 𝑋
32a1i 11 . 2 (𝐽 ∈ Top → (Clsd‘𝐽) ⊆ 𝒫 𝑋)
41topcld 23264 . 2 (𝐽 ∈ Top → 𝑋 ∈ (Clsd‘𝐽))
5 intcld 23269 . . . 4 ((𝑥 ≠ ∅ ∧ 𝑥 ⊆ (Clsd‘𝐽)) → 𝑥 ∈ (Clsd‘𝐽))
65ancoms 464 . . 3 ((𝑥 ⊆ (Clsd‘𝐽) ∧ 𝑥 ≠ ∅) → 𝑥 ∈ (Clsd‘𝐽))
763adant1 1148 . 2 ((𝐽 ∈ Top ∧ 𝑥 ⊆ (Clsd‘𝐽) ∧ 𝑥 ≠ ∅) → 𝑥 ∈ (Clsd‘𝐽))
83, 4, 7ismred 17690 1 (𝐽 ∈ Top → (Clsd‘𝐽) ∈ (Moore‘𝑋))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2145  wne 2957  wss 3902  c0 4282  𝒫 cpw 4560   cuni 4870   cint 4910  cfv 6537  Moorecmre 17670  Topctop 23122  Clsdccld 23245
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2734  ax-sep 5255  ax-nul 5267  ax-pow 5334  ax-pr 5402  ax-un 7739
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3079  df-rex 3089  df-rab 3415  df-v 3455  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4283  df-if 4486  df-pw 4562  df-sn 4588  df-pr 4590  df-op 4594  df-uni 4871  df-int 4911  df-iun 4956  df-iin 4957  df-br 5108  df-opab 5172  df-mpt 5191  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-iota 6493  df-fun 6539  df-fn 6540  df-fv 6545  df-mre 17674  df-top 23123  df-cld 23248
This theorem is used by:  mrccls  23308  cldmreon  23323  mreclatdemoBAD  23325
  Copyright terms: Public domain W3C validator