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Theorem brxp 4750
Description: Binary relation on a cross product. (Contributed by NM, 22-Apr-2004.)
Assertion
Ref Expression
brxp (𝐴(𝐶 × 𝐷)𝐵 ↔ (𝐴𝐶𝐵𝐷))

Proof of Theorem brxp
StepHypRef Expression
1 df-br 4084 . 2 (𝐴(𝐶 × 𝐷)𝐵 ↔ ⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷))
2 opelxp 4749 . 2 (⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷) ↔ (𝐴𝐶𝐵𝐷))
31, 2bitri 184 1 (𝐴(𝐶 × 𝐷)𝐵 ↔ (𝐴𝐶𝐵𝐷))
Colors of variables: wff set class
Syntax hints:  wa 104  wb 105  wcel 2200  cop 3669   class class class wbr 4083   × cxp 4717
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ral 2513  df-rex 2514  df-v 2801  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-br 4084  df-opab 4146  df-xp 4725
This theorem is referenced by:  brrelex12  4757  brel  4771  brinxp2  4786  eqbrrdva  4892  ssrelrn  4914  xpidtr  5119  xpcom  5275  tpostpos  6416  swoer  6716  erinxp  6764  ecopover  6788  ecopoverg  6791  ltxrlt  8220  ltxr  9979  znleval  14625
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