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Theorem wl-a1d 33756
Description: Deduction introducing an embedded antecedent. Copy of imim2 58 with a different proof. (Contributed by Wolf Lammen, 17-Dec-2018.) (New usage is discouraged.) (Proof modification is discouraged.)
Hypothesis
Ref Expression
wl-a1d.1 (𝜑𝜓)
Assertion
Ref Expression
wl-a1d (𝜑 → (𝜒𝜓))

Proof of Theorem wl-a1d
StepHypRef Expression
1 wl-a1d.1 . 2 (𝜑𝜓)
2 wl-ax1 33749 . 2 (𝜓 → (𝜒𝜓))
31, 2wl-syl 33739 1 (𝜑 → (𝜒𝜓))
Colors of variables: wff setvar class
Syntax hints:  wi 4
This theorem was proved from axioms:  ax-mp 5  ax-luk1 33734  ax-luk2 33735  ax-luk3 33736
This theorem is referenced by:  wl-ax2  33757
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