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Theorem opelcnvg 3302
Description: Ordered-pair membership in converse.
Assertion
Ref Expression
opelcnvg ((A C B D) → (A, B RB, A R))

Proof of Theorem opelcnvg
StepHypRef Expression
1 breq2 2628 . . . 4 (x = A → (yRxyRA))
2 breq1 2627 . . . 4 (y = B → (yRABRA))
31, 2opelopabg 2823 . . 3 ((A C B D) → (A, B {x, yyRx} ↔ BRA))
4 df-cnv 3192 . . . 4 R = {x, yyRx}
54eleq2i 1541 . . 3 (A, B RA, B {x, yyRx})
63, 5syl5bb 534 . 2 ((A C B D) → (A, B RBRA))
7 df-br 2625 . 2 (BRAB, A R)
86, 7syl6bb 538 1 ((A C B D) → (A, B RB, A R))
Colors of variables: wff set class
Syntax hints:   → wi 3   ↔ wb 146   wa 223   wcel 960  cop 2415   class class class wbr 2624  {copab 2671  ccnv 3175
This theorem is referenced by:  brcnvg 3303  opelcnv 3304  fvimacnv 3811  xrlenltt 5513
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 964  ax-gen 965  ax-8 966  ax-10 968  ax-11 969  ax-12 970  ax-13 971  ax-14 972  ax-17 973  ax-4 975  ax-5o 977  ax-6o 980  ax-9o 1125  ax-10o 1142  ax-16 1212  ax-11o 1220  ax-ext 1462  ax-sep 2708  ax-pow 2748  ax-pr 2785
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 983  df-sb 1174  df-eu 1384  df-mo 1385  df-clab 1467  df-cleq 1472  df-clel 1475  df-ne 1590  df-v 1815  df-dif 2052  df-un 2053  df-in 2054  df-ss 2056  df-nul 2284  df-pw 2406  df-sn 2416  df-pr 2417  df-op 2420  df-br 2625  df-opab 2672  df-cnv 3192
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