Certification Problem
Input (COPS 34)
We consider the TRS containing the following rules:
|
f(a,b) |
→ |
c |
(1) |
| a |
→ |
a' |
(2) |
| b |
→ |
b' |
(3) |
| c |
→ |
f(a',b) |
(4) |
| c |
→ |
f(a,b') |
(5) |
| c |
→ |
f(a,b) |
(6) |
The underlying signature is as follows:
{f/2, a/0, b/0, c/0, a'/0, b'/0}Property / Task
Prove or disprove confluence.Answer / Result
Yes.Proof (by csi @ CoCo 2021)
1 Strongly closed
Confluence is proven since the TRS is strongly closed.
The joins can be performed using
7
step(s).