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Axiom ax-4 1597
Description: Axiom of Quantified Implication. Axiom C4 of [Monk2] p. 105 and Theorem 19.20 of [Margaris] p. 90. It is restated as alim 1598 for labelling consistency. It should be used only by alim 1598. (Contributed by NM, 21-May-2008.) (New usage is discouraged.)
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 1580 . 2
61, 4wal 1580 . . 3
72, 4wal 1580 . . 3
86, 7wi 4 . 2
95, 8wi 4 1
Colors of variables: wff setvar class
This axiom is referenced by:  alim  1598
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