Metamath Proof Explorer


Theorem sylgt

Description: Closed form of sylg . (Contributed by BJ, 2-May-2019)

Ref Expression
Assertion sylgt ( ∀ 𝑥 ( 𝜓𝜒 ) → ( ( 𝜑 → ∀ 𝑥 𝜓 ) → ( 𝜑 → ∀ 𝑥 𝜒 ) ) )

Proof

Step Hyp Ref Expression
1 alim ( ∀ 𝑥 ( 𝜓𝜒 ) → ( ∀ 𝑥 𝜓 → ∀ 𝑥 𝜒 ) )
2 1 imim2d ( ∀ 𝑥 ( 𝜓𝜒 ) → ( ( 𝜑 → ∀ 𝑥 𝜓 ) → ( 𝜑 → ∀ 𝑥 𝜒 ) ) )