anasss

Theorem.

Arguments:

phi (pr), psi (pr), chi (pr), theta (pr),

Hypotheses:

(((phiwedgepsi)wedgechi)totheta)

Assertions:

((phiwedge(psiwedgechi))totheta)

Proof:

Hyp Ref Line Expr
Hypo1(((phiwedgepsi)wedgechi)totheta)
1exp312(phito(psito(chitotheta)))
2imp323((phiwedge(psiwedgechi))totheta)