adan><

Theorem.

Arguments:

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

Hypotheses:

((phiwedgepsi)tochi)

Assertions:

((phiwedge(thetawedgepsi))tochi)

Proof:

Hyp Ref Line Expr
Hypo1((phiwedgepsi)tochi)
1exp2(phito(psitochi))
2adan<3(phito((thetawedgepsi)tochi))
3imp4((phiwedge(thetawedgepsi))tochi)