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Theorem brcnvssr 38504
Description: The converse of a subset relation swaps arguments. (Contributed by Peter Mazsa, 1-Aug-2019.)
Assertion
Ref Expression
brcnvssr (𝐴𝑉 → (𝐴 S 𝐵𝐵𝐴))

Proof of Theorem brcnvssr
StepHypRef Expression
1 relssr 38498 . . 3 Rel S
21relbrcnv 6081 . 2 (𝐴 S 𝐵𝐵 S 𝐴)
3 brssr 38499 . 2 (𝐴𝑉 → (𝐵 S 𝐴𝐵𝐴))
42, 3bitrid 283 1 (𝐴𝑉 → (𝐴 S 𝐵𝐵𝐴))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wcel 2109  wss 3917   class class class wbr 5110  ccnv 5640   S cssr 38179
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2702  ax-sep 5254  ax-nul 5264  ax-pr 5390
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2709  df-cleq 2722  df-clel 2804  df-ral 3046  df-rex 3055  df-rab 3409  df-v 3452  df-dif 3920  df-un 3922  df-in 3924  df-ss 3934  df-nul 4300  df-if 4492  df-sn 4593  df-pr 4595  df-op 4599  df-br 5111  df-opab 5173  df-xp 5647  df-rel 5648  df-cnv 5649  df-ssr 38496
This theorem is referenced by:  brcnvssrid  38505  br1cossxrncnvssrres  38506  dfcnvrefrels2  38526  dfcnvrefrels3  38527
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