bvsyl

Theorem.

Arguments:

x (sv), phi (pr), psi (pr),

Hypotheses:

(forallxphitopsi)
(x bound in phi)

Assertions:

(phitopsi)

Proof:

Hyp Ref Line Expr
Hypo1(forallxphitopsi)
2(x bound in phi)
2df-Bvp3(phitoforallxphi)
1, 3syl4(phitopsi)