/home/nowonder/forschung/aprove/TPDB05/TRS/SK90/4.07.trs

The program

(VAR x y z)
(RULES
*(i(x),x) -> 1
*(1,y) -> y
*(x,0) -> 0
*(*(x,y),z) -> *(x,*(y,z))
)
(COMMENT Example 4.7 in \cite{SK90})