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Theorem alimdh 1563
Description: Deduction from Theorem 19.20 of [Margaris] p. 90. (Contributed by NM, 4-Jan-2002.)
Hypotheses
Ref Expression
alimdh.1 (φxφ)
alimdh.2 (φ → (ψχ))
Assertion
Ref Expression
alimdh (φ → (xψxχ))

Proof of Theorem alimdh
StepHypRef Expression
1 alimdh.1 . 2 (φxφ)
2 alimdh.2 . . 3 (φ → (ψχ))
32al2imi 1561 . 2 (xφ → (xψxχ))
41, 3syl 15 1 (φ → (xψxχ))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wal 1540
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-gen 1546  ax-5 1557
This theorem is referenced by:  alrimdh  1587  alimdv  1621  hbald  1740  alimd  1764  dral1  1965  dral1-o  2154  ax11indalem  2197  ax11inda2ALT  2198
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