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Axiom ax-4 1581
Description: Axiom of Quantified Implication. Axiom C4 of [Monk2] p. 105. (Contributed by NM, 5-Aug-1993.)
Assertion
Ref Expression
ax-4

Detailed syntax breakdown of Axiom ax-4
StepHypRef Expression
1 wph . . . 4
2 wps . . . 4
31, 2wi 4 . . 3
4 vx . . 3
53, 4wal 1564 . 2
61, 4wal 1564 . . 3
72, 4wal 1564 . . 3
86, 7wi 4 . 2
95, 8wi 4 1
Colors of variables: wff set class
This axiom is referenced by:  alim  1582  alimi  1583  spfw  1718  spwOLD  1720  axc4  1771  19.21t  1819  a16gOLD  2055  3ax4  30089  3ax4VD  30444  hbalgVD  30487  stdpc5t  30927  a16gNEW11  31098  ax11w7tAUX11  31207
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