anabsan<

Theorem.

Arguments:

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

Hypotheses:

(((phiwedgephi)wedgepsi)tochi)

Assertions:

((phiwedgepsi)tochi)

Proof:

Hyp Ref Line Expr
Hypo1(((phiwedgephi)wedgepsi)tochi)
1an23ass2(((phiwedgepsi)wedgephi)tochi)
2<anabs<3((phiwedgepsi)tochi)