MAYBE
(ignored inputs)COMMENT doi:10.1016/0890-5401 ( 90 ) 90015-A [24] p. 188 submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
Rewrite Rules:
   [ g(f(a)) -> f(g(f(a))),
     g(f(a)) -> f(f(a)),
     f(f(a)) -> f(a) ]
Apply Direct Methods...
Inner CPs:
   [  ]
Outer CPs:
   [ f(g(f(a))) = f(f(a)) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

Combined result: Can't judge
81.trs: Failure(unknown CR)
(0 msec.)