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Theorem brssrres 38960
Description: Restricted subset binary relation. (Contributed by Peter Mazsa, 25-Nov-2019.)
Assertion
Ref Expression
brssrres (𝐶𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵𝐴𝐵𝐶)))

Proof of Theorem brssrres
StepHypRef Expression
1 brres 5939 . 2 (𝐶𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵𝐴𝐵 S 𝐶)))
2 brssr 38957 . . 3 (𝐶𝑉 → (𝐵 S 𝐶𝐵𝐶))
32anbi2d 636 . 2 (𝐶𝑉 → ((𝐵𝐴𝐵 S 𝐶) ↔ (𝐵𝐴𝐵𝐶)))
41, 3bitrd 280 1 (𝐶𝑉 → (𝐵( S ↾ 𝐴)𝐶 ↔ (𝐵𝐴𝐵𝐶)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  wcel 2119  wss 3883   class class class wbr 5073  cres 5621   S cssr 38562
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-ext 2711  ax-sep 5219  ax-pr 5363
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-sb 2074  df-clab 2718  df-cleq 2731  df-clel 2814  df-ral 3054  df-rex 3064  df-rab 3392  df-v 3433  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4263  df-if 4456  df-sn 4557  df-pr 4559  df-op 4563  df-br 5074  df-opab 5136  df-xp 5625  df-rel 5626  df-res 5631  df-ssr 38954
This theorem is referenced by:  br1cnvssrres  38961
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