YES
0 QTRS
↳1 QTRSRRRProof (⇔, 0 ms)
↳2 QTRS
↳3 QTRSRRRProof (⇔, 0 ms)
↳4 QTRS
↳5 RisEmptyProof (⇔, 0 ms)
↳6 YES
f(c(X, s(Y))) → f(c(s(X), Y))
g(c(s(X), Y)) → f(c(X, s(Y)))
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:
POL(c(x1, x2)) = 2·x1 + 2·x2
POL(f(x1)) = x1
POL(g(x1)) = 2 + 2·x1
POL(s(x1)) = 1 + x1
g(c(s(X), Y)) → f(c(X, s(Y)))
f(c(X, s(Y))) → f(c(s(X), Y))
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:
POL(c(x1, x2)) = x1 + 2·x2
POL(f(x1)) = 2·x1
POL(s(x1)) = 1 + x1
f(c(X, s(Y))) → f(c(s(X), Y))