MAYBE 0.08/0.18 MAYBE 0.08/0.18 0.08/0.18 Problem: 0.08/0.18 plus(x,0()) -> x 0.08/0.18 plus(0(),y) -> y 0.08/0.18 plus(s(x),y) -> s(plus(x,y)) 0.08/0.18 times(0(),y) -> 0() 0.08/0.18 times(s(0()),y) -> y 0.08/0.18 times(s(x),y) -> plus(y,times(x,y)) 0.08/0.18 div(0(),y) -> 0() 0.08/0.18 div(x,y) -> quot(x,y,y) 0.08/0.18 quot(0(),s(y),z) -> 0() 0.08/0.18 quot(s(x),s(y),z) -> quot(x,y,z) 0.08/0.18 quot(x,0(),s(z)) -> s(div(x,s(z))) 0.08/0.18 div(div(x,y),z) -> div(x,times(y,z)) 0.08/0.18 0.08/0.18 Proof: 0.08/0.18 Open 0.08/0.19 EOF