YES Problem: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) Proof: DP Processor: DPs: +#(s(x),y) -> +#(x,y) +#(s(x),y) -> s#(+(x,y)) +#(p(x),y) -> +#(x,y) +#(p(x),y) -> p#(+(x,y)) minus#(s(x)) -> minus#(x) minus#(s(x)) -> p#(minus(x)) minus#(p(x)) -> minus#(x) minus#(p(x)) -> s#(minus(x)) *#(s(x),y) -> *#(x,y) *#(s(x),y) -> +#(*(x,y),y) *#(p(x),y) -> minus#(y) *#(p(x),y) -> *#(x,y) *#(p(x),y) -> +#(*(x,y),minus(y)) TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) TDG Processor: DPs: +#(s(x),y) -> +#(x,y) +#(s(x),y) -> s#(+(x,y)) +#(p(x),y) -> +#(x,y) +#(p(x),y) -> p#(+(x,y)) minus#(s(x)) -> minus#(x) minus#(s(x)) -> p#(minus(x)) minus#(p(x)) -> minus#(x) minus#(p(x)) -> s#(minus(x)) *#(s(x),y) -> *#(x,y) *#(s(x),y) -> +#(*(x,y),y) *#(p(x),y) -> minus#(y) *#(p(x),y) -> *#(x,y) *#(p(x),y) -> +#(*(x,y),minus(y)) TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) graph: *#(p(x),y) -> *#(x,y) -> *#(p(x),y) -> +#(*(x,y),minus(y)) *#(p(x),y) -> *#(x,y) -> *#(p(x),y) -> *#(x,y) *#(p(x),y) -> *#(x,y) -> *#(p(x),y) -> minus#(y) *#(p(x),y) -> *#(x,y) -> *#(s(x),y) -> +#(*(x,y),y) *#(p(x),y) -> *#(x,y) -> *#(s(x),y) -> *#(x,y) *#(p(x),y) -> minus#(y) -> minus#(p(x)) -> s#(minus(x)) *#(p(x),y) -> minus#(y) -> minus#(p(x)) -> minus#(x) *#(p(x),y) -> minus#(y) -> minus#(s(x)) -> p#(minus(x)) *#(p(x),y) -> minus#(y) -> minus#(s(x)) -> minus#(x) *#(p(x),y) -> +#(*(x,y),minus(y)) -> +#(p(x),y) -> p#(+(x,y)) *#(p(x),y) -> +#(*(x,y),minus(y)) -> +#(p(x),y) -> +#(x,y) *#(p(x),y) -> +#(*(x,y),minus(y)) -> +#(s(x),y) -> s#(+(x,y)) *#(p(x),y) -> +#(*(x,y),minus(y)) -> +#(s(x),y) -> +#(x,y) *#(s(x),y) -> *#(x,y) -> *#(p(x),y) -> +#(*(x,y),minus(y)) *#(s(x),y) -> *#(x,y) -> *#(p(x),y) -> *#(x,y) *#(s(x),y) -> *#(x,y) -> *#(p(x),y) -> minus#(y) *#(s(x),y) -> *#(x,y) -> *#(s(x),y) -> +#(*(x,y),y) *#(s(x),y) -> *#(x,y) -> *#(s(x),y) -> *#(x,y) *#(s(x),y) -> +#(*(x,y),y) -> +#(p(x),y) -> p#(+(x,y)) *#(s(x),y) -> +#(*(x,y),y) -> +#(p(x),y) -> +#(x,y) *#(s(x),y) -> +#(*(x,y),y) -> +#(s(x),y) -> s#(+(x,y)) *#(s(x),y) -> +#(*(x,y),y) -> +#(s(x),y) -> +#(x,y) minus#(p(x)) -> minus#(x) -> minus#(p(x)) -> s#(minus(x)) minus#(p(x)) -> minus#(x) -> minus#(p(x)) -> minus#(x) minus#(p(x)) -> minus#(x) -> minus#(s(x)) -> p#(minus(x)) minus#(p(x)) -> minus#(x) -> minus#(s(x)) -> minus#(x) minus#(s(x)) -> minus#(x) -> minus#(p(x)) -> s#(minus(x)) minus#(s(x)) -> minus#(x) -> minus#(p(x)) -> minus#(x) minus#(s(x)) -> minus#(x) -> minus#(s(x)) -> p#(minus(x)) minus#(s(x)) -> minus#(x) -> minus#(s(x)) -> minus#(x) +#(p(x),y) -> +#(x,y) -> +#(p(x),y) -> p#(+(x,y)) +#(p(x),y) -> +#(x,y) -> +#(p(x),y) -> +#(x,y) +#(p(x),y) -> +#(x,y) -> +#(s(x),y) -> s#(+(x,y)) +#(p(x),y) -> +#(x,y) -> +#(s(x),y) -> +#(x,y) +#(s(x),y) -> +#(x,y) -> +#(p(x),y) -> p#(+(x,y)) +#(s(x),y) -> +#(x,y) -> +#(p(x),y) -> +#(x,y) +#(s(x),y) -> +#(x,y) -> +#(s(x),y) -> s#(+(x,y)) +#(s(x),y) -> +#(x,y) -> +#(s(x),y) -> +#(x,y) SCC Processor: #sccs: 3 #rules: 6 #arcs: 38/169 DPs: *#(p(x),y) -> *#(x,y) *#(s(x),y) -> *#(x,y) TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) LPO Processor: argument filtering: pi(s) = [0] pi(p) = [0] pi(0) = [] pi(+) = [0,1] pi(minus) = [0] pi(*) = [0,1] pi(*#) = [0] precedence: * > minus > + > s > *# ~ 0 ~ p problem: DPs: TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) Qed DPs: minus#(s(x)) -> minus#(x) minus#(p(x)) -> minus#(x) TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) LPO Processor: argument filtering: pi(s) = [0] pi(p) = [0] pi(0) = [] pi(+) = [0,1] pi(minus) = [0] pi(*) = [0,1] pi(minus#) = 0 precedence: * > minus > + > minus# ~ 0 ~ p ~ s problem: DPs: TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) Qed DPs: +#(s(x),y) -> +#(x,y) +#(p(x),y) -> +#(x,y) TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) LPO Processor: argument filtering: pi(s) = [0] pi(p) = [0] pi(0) = [] pi(+) = [0,1] pi(minus) = [0] pi(*) = [0,1] pi(+#) = 0 precedence: * > minus ~ + > +# ~ 0 ~ p ~ s problem: DPs: TRS: p(s(x)) -> x s(p(x)) -> x +(0(),y) -> y +(s(x),y) -> s(+(x,y)) +(p(x),y) -> p(+(x,y)) minus(0()) -> 0() minus(s(x)) -> p(minus(x)) minus(p(x)) -> s(minus(x)) *(0(),y) -> 0() *(s(x),y) -> +(*(x,y),y) *(p(x),y) -> +(*(x,y),minus(y)) Qed