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

Theorem filunibas 24230
Description: Recover the base set from a filter. (Contributed by Stefan O'Rear, 2-Aug-2015.)
Assertion
Ref Expression
filunibas (𝐹 ∈ (Fil‘𝑋) → ∪ 𝐹 = 𝑋)

Proof of Theorem filunibas
StepHypRef Expression
1 filsspw 24200 . . 3 (𝐹 ∈ (Fil‘𝑋) → 𝐹 ⊆ 𝒫 𝑋)
2 sspwuni 5063 . . 3 (𝐹 ⊆ 𝒫 𝑋 ↔ ∪ 𝐹 ⊆ 𝑋)
31, 2sylib 221 . 2 (𝐹 ∈ (Fil‘𝑋) → ∪ 𝐹 ⊆ 𝑋)
4 filtop 24204 . 2 (𝐹 ∈ (Fil‘𝑋) → 𝑋 ∈ 𝐹)
5 unissel 4903 . 2 ((∪ 𝐹 ⊆ 𝑋 ∧ 𝑋 ∈ 𝐹) → ∪ 𝐹 = 𝑋)
63, 4, 5syl2anc 596 1 (𝐹 ∈ (Fil‘𝑋) → ∪ 𝐹 = 𝑋)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570   ∈ wcel 2147   ⊆ wss 3900  𝒫 cpw 4560  ∪ cuni 4870  ‘cfv 6558  Filcfil 24194
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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395
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 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6512  df-fun 6560  df-fv 6566  df-fbas 21705  df-fil 24195
This theorem is used by:  filunirn  24231  filconn  24232  uffixfr  24272  uffix2  24273  uffixsn  24274  ufildr  24280  flimtopon  24319  flimss1  24322  flffval  24338  fclsval  24357  isfcls  24358  fclstopon  24361  fclsfnflim  24376  fcfval  24382
  Copyright terms: Public domain W3C validator