Certification Problem

Input (COPS 75)

We consider the TRS containing the following rules:

f(x) x (1)
f(x) f(f(x)) (2)

The underlying signature is as follows:

{f/1}

Property / Task

Prove or disprove confluence.

Answer / Result

Yes.

Proof (by ACP @ CoCo 2023)

1 Development Closed

Confluence is proven since the TRS is development closed. The joins can be performed using 1 development step(s).