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Theorem br1cnvssrres 39437
Description: Restricted converse subset binary relation. (Contributed by Peter Mazsa, 25-Nov-2019.)
Assertion
Ref Expression
br1cnvssrres (𝐵 ∈ 𝑉 → (𝐵◡( S ↾ 𝐴)𝐶 ↔ (𝐶 ∈ 𝐴 ∧ 𝐶 ⊆ 𝐵)))

Proof of Theorem br1cnvssrres
StepHypRef Expression
1 relres 5992 . . 3 Rel ( S ↾ 𝐴)
21relbrcnv 6097 . 2 (𝐵◡( S ↾ 𝐴)𝐶 ↔ 𝐶( S ↾ 𝐴)𝐵)
3 brssrres 39436 . 2 (𝐵 ∈ 𝑉 → (𝐶( S ↾ 𝐴)𝐵 ↔ (𝐶 ∈ 𝐴 ∧ 𝐶 ⊆ 𝐵)))
42, 3bitrid 286 1 (𝐵 ∈ 𝑉 → (𝐵◡( S ↾ 𝐴)𝐶 ↔ (𝐶 ∈ 𝐴 ∧ 𝐶 ⊆ 𝐵)))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2145   ⊆ wss 3898   class class class wbr 5102  ◡ccnv 5646   ↾ cres 5649   S cssr 39038
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-ext 2732  ax-sep 5248  ax-pr 5390
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 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4279  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-br 5103  df-opab 5167  df-xp 5653  df-rel 5654  df-cnv 5655  df-res 5659  df-ssr 39430
This theorem is used by: (None)
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