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Theorem clsneircomplex 45306
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 45305 . 2 (𝜑 → 𝐵 ∈ V)
5 difssd 4076 . 2 (𝜑 → (𝐵 ∖ 𝑆) ⊆ 𝐵)
64, 5sselpwd 5295 1 (𝜑 → (𝐵 ∖ 𝑆) ∈ 𝒫 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570   ∈ wcel 2147  Vcvv 3454   ∖ cdif 4048  𝒫 cpw 4560   class class class wbr 5106   ∘ ccom 5660  ‘cfv 6561
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-ext 2735  ax-sep 5253  ax-nul 5264  ax-pr 5396
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-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  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 5172  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-res 5668  df-iota 6515  df-fv 6569
This theorem is used by:  clsneiel2  45312
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