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Theorem br1cnvinxp 38245
Description: Binary relation on the converse of an intersection with a Cartesian product. (Contributed by Peter Mazsa, 27-Jul-2019.)
Assertion
Ref Expression
br1cnvinxp (𝐶(𝑅 ∩ (𝐴 × 𝐵))𝐷 ↔ ((𝐶𝐵𝐷𝐴) ∧ 𝐷𝑅𝐶))

Proof of Theorem br1cnvinxp
StepHypRef Expression
1 relinxp 5777 . . 3 Rel (𝑅 ∩ (𝐴 × 𝐵))
21relbrcnv 6078 . 2 (𝐶(𝑅 ∩ (𝐴 × 𝐵))𝐷𝐷(𝑅 ∩ (𝐴 × 𝐵))𝐶)
3 brinxp2 5716 . 2 (𝐷(𝑅 ∩ (𝐴 × 𝐵))𝐶 ↔ ((𝐷𝐴𝐶𝐵) ∧ 𝐷𝑅𝐶))
4 ancom 460 . . 3 ((𝐷𝐴𝐶𝐵) ↔ (𝐶𝐵𝐷𝐴))
54anbi1i 624 . 2 (((𝐷𝐴𝐶𝐵) ∧ 𝐷𝑅𝐶) ↔ ((𝐶𝐵𝐷𝐴) ∧ 𝐷𝑅𝐶))
62, 3, 53bitri 297 1 (𝐶(𝑅 ∩ (𝐴 × 𝐵))𝐷 ↔ ((𝐶𝐵𝐷𝐴) ∧ 𝐷𝑅𝐶))
Colors of variables: wff setvar class
Syntax hints:  wb 206  wa 395  wcel 2109  cin 3913   class class class wbr 5107   × cxp 5636  ccnv 5637
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 2701  ax-sep 5251  ax-nul 5261  ax-pr 5387
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 2708  df-cleq 2721  df-clel 2803  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-br 5108  df-opab 5170  df-xp 5644  df-rel 5645  df-cnv 5646
This theorem is referenced by:  br1cnvres  38258
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