(0) Obligation:
Q restricted rewrite system:
The TRS R consists of the following rules:
app(app(app(compose, f), g), x) → app(f, app(g, x))
Q is empty.
(1) DependencyPairsProof (EQUIVALENT transformation)
Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem.
(2) Obligation:
Q DP problem:
The TRS P consists of the following rules:
APP(app(app(compose, f), g), x) → APP(f, app(g, x))
APP(app(app(compose, f), g), x) → APP(g, x)
The TRS R consists of the following rules:
app(app(app(compose, f), g), x) → app(f, app(g, x))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
(3) QDPOrderProof (EQUIVALENT transformation)
We use the reduction pair processor [LPAR04].
The following pairs can be oriented strictly and are deleted.
APP(app(app(compose, f), g), x) → APP(f, app(g, x))
APP(app(app(compose, f), g), x) → APP(g, x)
The remaining pairs can at least be oriented weakly.
Used ordering: SCNP Order with the following components:
Level mapping:
Top level AFS:
APP(
x0,
x1,
x2) =
APP(
x0)
Tags:
APP has argument tags [1,0,2] and root tag 0
Comparison: MAX
Underlying order for the size change arcs and the rules of R:
Combined order from the following AFS and order.
APP(
x1,
x2) =
x1
app(
x1,
x2) =
app(
x1,
x2)
compose =
compose
Recursive path order with status [RPO].
Quasi-Precedence:
trivial
Status:
app2: multiset
compose: multiset
The following usable rules [FROCOS05] were oriented:
none
(4) Obligation:
Q DP problem:
P is empty.
The TRS R consists of the following rules:
app(app(app(compose, f), g), x) → app(f, app(g, x))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
(5) PisEmptyProof (EQUIVALENT transformation)
The TRS P is empty. Hence, there is no (P,Q,R) chain.
(6) TRUE