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bj-sylget2
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Theorem
bj-sylget2
Description:
Uncurried (imported) form of
bj-sylget
.
(Contributed by
BJ
, 2-May-2019)
Ref
Expression
Assertion
bj-sylget2
⊢
∀
x
φ
→
ψ
∧
∃
x
ψ
→
χ
→
∃
x
φ
→
χ
Proof
Step
Hyp
Ref
Expression
1
bj-sylget
⊢
∀
x
φ
→
ψ
→
∃
x
ψ
→
χ
→
∃
x
φ
→
χ
2
1
imp
⊢
∀
x
φ
→
ψ
∧
∃
x
ψ
→
χ
→
∃
x
φ
→
χ