Theorem 2alimdv

Deduction form of Theorem 19.20 of [Margaris] p. 90 with two quantifiers, see alim. (Contributed by NM, 27-Apr-2004.)

Hypothesis
2alimdv.1
\( \vdash \varphi \rightarrow \psi \rightarrow \chi \)
Conclusion
\( \vdash \varphi \rightarrow \forall x \, \forall y \, \psi \rightarrow \forall x \, \forall y \, \chi \)
Proof
2alimdv.1
alimdv _
alimdv _