Term Rewriting System R:

   [x, y]
   f(x, a) -> x
   f(x, g(y)) -> f(g(x), y)

Termination of R to be shown.


Removing the following rules from R which fullfill a polynomial ordering: 

   f(x, a) -> x

where the Polynomial interpretation:
POL(g(x_1)) = x_1
POL(a) = 0
POL(f(x_1, x_2)) = 1 + x_1 + x_2
was used. 



Not all Rules of R can be deleted, so we still have to regard a part of R.


Removing the following rules from R which fullfill a polynomial ordering: 

   f(x, g(y)) -> f(g(x), y)

where the Polynomial interpretation:
POL(g(x_1)) = 1 + x_1
POL(f(x_1, x_2)) = 2 + x_1 + 2*x_2
was used. 



All Rules of R can be deleted.



Termination of R successfully shown.


Duration: 0.360 seconds.