MAYBE 66.76/19.13 MAYBE 66.76/19.13 66.76/19.13 Problem: 66.76/19.13 a__and(tt(),X) -> mark(X) 66.76/19.13 a__plus(N,0()) -> mark(N) 66.76/19.13 a__plus(N,s(M)) -> s(a__plus(mark(N),mark(M))) 66.76/19.13 mark(and(X1,X2)) -> a__and(mark(X1),X2) 66.76/19.13 mark(plus(X1,X2)) -> a__plus(mark(X1),mark(X2)) 66.76/19.13 mark(tt()) -> tt() 66.76/19.13 mark(0()) -> 0() 66.76/19.13 mark(s(X)) -> s(mark(X)) 66.76/19.13 a__and(X1,X2) -> and(X1,X2) 66.76/19.13 a__plus(X1,X2) -> plus(X1,X2) 66.76/19.13 66.76/19.13 Proof: 66.76/19.13 Open 66.76/19.14 EOF