Metamath Proof Explorer

Theorem alrimi

Description: Inference form of Theorem 19.21 of Margaris p. 90, see 19.21 . (Contributed by Mario Carneiro, 24-Sep-2016)

Ref Expression
Hypotheses alrimi.1 x φ
alrimi.2 φ ψ
Assertion alrimi φ x ψ


Step Hyp Ref Expression
1 alrimi.1 x φ
2 alrimi.2 φ ψ
3 1 nf5ri φ x φ
4 3 2 alrimih φ x ψ