anmp12

Theorem.

Arguments:

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

Hypotheses:

(((phiwedgepsi)wedgechi)totheta)
psi

Assertions:

((phiwedgechi)totheta)

Proof:

Hyp Ref Line Expr
Hypo1(((phiwedgepsi)wedgechi)totheta)
2psi
1exp3((phiwedgepsi)to(chitotheta))
2, 3anmp>4(phito(chitotheta))
4imp5((phiwedgechi)totheta)