rp-1<

Theorem.

Arguments:

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

Hypotheses:

(ceqa)
(phito(aeqb))

Assertions:

(phito(ceqb))

Proof:

Hyp Ref Line Expr
Hypo1(ceqa)
2(phito(aeqb))
1ax13(phito(ceqa))
2, 3trd4(phito(ceqb))