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Theorem r19.21t 2699
Description: Theorem 19.21 of [Margaris] p. 90 with restricted quantifiers (closed theorem version). (Contributed by NM, 1-Mar-2008.)
Assertion
Ref Expression
r19.21t  F/

Proof of Theorem r19.21t
StepHypRef Expression
1 bi2.04 350 . . . 4
21albii 1566 . . 3
3 19.21t 1795 . . 3  F/
42, 3syl5bb 248 . 2  F/
5 df-ral 2619 . 2
6 df-ral 2619 . . 3
76imbi2i 303 . 2
84, 5, 73bitr4g 279 1  F/
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176  wal 1540   F/wnf 1544   wcel 1710  wral 2614
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-11 1746
This theorem depends on definitions:  df-bi 177  df-ex 1542  df-nf 1545  df-ral 2619
This theorem is referenced by:  r19.21  2700
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