rp-2>

Theorem.

Arguments:

a (obj), b (obj), c (obj), phi (pr),

Hypotheses:

(beqc)
(phito(aeqb))

Assertions:

(phito(aeqc))

Proof:

Hyp Ref Line Expr
Hypo1(beqc)
2(phito(aeqb))
1ax13(phito(beqc))
2, 3trd4(phito(aeqc))