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Theorem brssrres 39559
Description: Restricted subset binary relation. (Contributed by Peter Mazsa, 25-Nov-2019.)
Assertion
Ref Expression
brssrres (𝐶 ∈ 𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵 ∈ 𝐴 ∧ 𝐵 ⊆ 𝐶)))

Proof of Theorem brssrres
StepHypRef Expression
1 brres 5976 . 2 (𝐶 ∈ 𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵 ∈ 𝐴 ∧ 𝐵 S 𝐶)))
2 brssr 39556 . . 3 (𝐶 ∈ 𝑉 → (𝐵 S 𝐶 ↔ 𝐵 ⊆ 𝐶))
32anbi2d 642 . 2 (𝐶 ∈ 𝑉 → ((𝐵 ∈ 𝐴 ∧ 𝐵 S 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ 𝐵 ⊆ 𝐶)))
41, 3bitrd 282 1 (𝐶 ∈ 𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵 ∈ 𝐴 ∧ 𝐵 ⊆ 𝐶)))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2144   ⊆ wss 3895   class class class wbr 5102   ↾ cres 5652   S cssr 39161
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-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-clab 2739  df-cleq 2752  df-clel 2835  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-sn 4584  df-pr 4586  df-op 4590  df-br 5103  df-opab 5167  df-xp 5656  df-rel 5657  df-res 5662  df-ssr 39553
This theorem is used by:  br1cnvssrres  39560
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