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Theorem clsneircomplex 45197
Description: The relative complement of the class 𝑆 exists as a subset of the base set. (Contributed by RP, 26-Jun-2021.)
Hypotheses
Ref Expression
clsneibex.d 𝐷 = (𝑃‘𝐵)
clsneibex.h 𝐻 = (𝐹 ∘ 𝐷)
clsneibex.r (𝜑 → 𝐾𝐻𝑁)
Assertion
Ref Expression
clsneircomplex (𝜑 → (𝐵 ∖ 𝑆) ∈ 𝒫 𝐵)

Proof of Theorem clsneircomplex
StepHypRef Expression
1 clsneibex.d . . 3 𝐷 = (𝑃‘𝐵)
2 clsneibex.h . . 3 𝐻 = (𝐹 ∘ 𝐷)
3 clsneibex.r . . 3 (𝜑 → 𝐾𝐻𝑁)
41, 2, 3clsneibex 45196 . 2 (𝜑 → 𝐵 ∈ V)
5 difssd 4073 . 2 (𝜑 → (𝐵 ∖ 𝑆) ⊆ 𝐵)
64, 5sselpwd 5289 1 (𝜑 → (𝐵 ∖ 𝑆) ∈ 𝒫 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1569   ∈ wcel 2144  Vcvv 3450   ∖ cdif 4045  𝒫 cpw 4556   class class class wbr 5102   ∘ ccom 5654  ‘cfv 6539
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-ext 2732  ax-sep 5248  ax-nul 5259  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-iota 6494  df-fv 6547
This theorem is used by:  clsneiel2  45203
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