Certification Problem                    
                
Input (COPS 268)
The rewrite relation of the following conditional TRS is considered.
| 
p(q(x)) | 
→ | 
0 | 
| c | 
→ | 
c | 
| 
a(x) | 
→ | 
b | 
 | p(x) ≈ 0
 | 
Property / Task
Prove or disprove confluence.Answer / Result
Yes.Proof (by ConCon @ CoCo 2020)
1 Almost-orthogonal
      The given (extended) properly oriented, right-stable, oriented 3-CTRS
      is almost-orthogonal,
      since there are no conditional critical pairs.