MAYBE (ignored inputs)COMMENT doi:10.1016/0004-3702 ( 85 ) 90074-8 [114] p. 262 ( BA ) submitted by: Aart Middeldorp input TRS: [ +(?x,0) -> ?x, +(?x,?x) -> 0, *(?x,1) -> ?x, *(?x,?x) -> ?x, *(?x,0) -> 0, *(?x,+(?y,?z)) -> +(*(?x,?y),*(?x,?z)), or(?x,?y) -> +(*(?x,?y),+(?x,?y)), implies(?x,?y) -> +(*(?x,?y),+(?x,1)), equivalent(?x,?y) -> +(+(?x,?y),1), not(?x) -> +(?x,1), +(+(?x,?y),?z) -> +(?x,+(?y,?z)), +(?x,+(?y,?z)) -> +(+(?x,?y),?z), +(?x,?y) -> +(?y,?x), *(*(?x,?y),?z) -> *(?x,*(?y,?z)), *(?x,*(?y,?z)) -> *(*(?x,?y),?z), *(?x,?y) -> *(?y,?x) ] TRS: [ +(?x,0) -> ?x, +(?x,?x) -> 0, *(?x,1) -> ?x, *(?x,?x) -> ?x, *(?x,0) -> 0, *(?x,+(?y,?z)) -> +(*(?x,?y),*(?x,?z)), or(?x,?y) -> +(*(?x,?y),+(?x,?y)), implies(?x,?y) -> +(*(?x,?y),+(?x,1)), equivalent(?x,?y) -> +(+(?x,?y),1), not(?x) -> +(?x,1), +(+(?x,?y),?z) -> +(?x,+(?y,?z)), +(?x,+(?y,?z)) -> +(+(?x,?y),?z), +(?x,?y) -> +(?y,?x), *(*(?x,?y),?z) -> *(?x,*(?y,?z)), *(?x,*(?y,?z)) -> *(*(?x,?y),?z), *(?x,?y) -> *(?y,?x) ] unknown Right-Reducible problems/534.trs: Failure(unknown UNC) (0 msec.)