Certification Problem

Input (COPS 575)

We consider the TRS containing the following rules:

s(p(x)) x (1)
p(s(x)) x (2)

The underlying signature is as follows:

{s/1, p/1}

Property / Task

Prove or disprove confluence.

Answer / Result

Yes.

Proof (by ACP @ CoCo 2022)

1 Strongly closed

Confluence is proven since the TRS is strongly closed. The joins can be performed using 0 step(s).