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Theorem zfregfr 4610
Description: The epsilon relation is founded on any class.
Assertion
Ref Expression
zfregfr E Fr A

Proof of Theorem zfregfr
StepHypRef Expression
1 dfepfr 2938 . 2 (E Fr Ax((x A x) → y x (xy) = ))
2 visset 1816 . . . 4 x V
32zfreg2 4606 . . 3 (xy x (xy) = )
43adantl 390 . 2 ((x A x) → y x (xy) = )
51, 4mpgbir 990 1 E Fr A
Colors of variables: wff set class
Syntax hints:   → wi 3   wa 223   = wceq 958   ≠ wne 1588  wrex 1649   ∩ cin 2049   wss 2050  c0 2283  Ecep 2836   Fr wfr 2921
This theorem is referenced by:  en2lp 4611  noinfep 4650
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  ax-reg 4602
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-ral 1652  df-rex 1653  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-eprel 2838  df-fr 2923
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