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Theorem brdom 3283
Description: Dominance relation.
Hypothesis
Ref Expression
bren.1 |- B e. V
Assertion
Ref Expression
brdom |- (A ~<_ B <-> E.f f:A-1-1->B)
Distinct variable group(s):   A,f   B,f

Proof of Theorem brdom
StepHypRef Expression
1 bren.1 . 2 |- B e. V
2 brdomg 3281 . 2 |- (B e. V -> (A ~<_ B <-> E.f f:A-1-1->B))
31, 2ax-mp 6 1 |- (A ~<_ B <-> E.f f:A-1-1->B)
Colors of variables: wff set class
Syntax hints:   <-> wb 127  E.wex 678   e. wcel 1092  Vcvv 1348   class class class wbr 2054  -1-1->wf1 2419   ~<_ cdom 3272
This theorem is referenced by:  domen 3284  domtr 3320  2dom 3332  xpdom2 3345  sbthlem10 3358  fodomb 3615
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-un 1076  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-uni 1920  df-br 2063  df-opab 2098  df-xp 2424  df-rel 2425  df-dm 2428  df-fn 2433  df-f 2434  df-f1 2435  df-dom 3275
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