fv-imt

Theorem.

Arguments:

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

Hypotheses:

(phito(psitoforallxpsi))
(x bound in phi)

Assertions:

((phitopsi)toforallx(phitopsi))

Proof:

Hyp Ref Line Expr
Hypo1(phito(psitoforallxpsi))
2(x bound in phi)
1ax23((phitopsi)to(phitoforallxpsi))
2imgen>4(forallx(phitopsi)leftrightarrow(phitoforallxpsi))
3, 4brpi22<5((phitopsi)toforallx(phitopsi))