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Concurrent Systems/notes/8 - Enhancing Liveness Properties.md
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@ -81,7 +81,7 @@ Guessing the time duration for suspecting a process:
### From obstruction-freedom to wait-freedom
**Eventually perfect:** failure detector ♢P provides each process $p_i$ a local variable $suspected_i$ such that
1. *(Eventual completeness)* eventually, $suspended_{i}$ contains all the indexes of crashed processes, for all correct $p_i$
1. *(Eventual completeness)* eventually, $suspected_{i}$ contains all the indexes of crashed processes, for all correct $p_i$
2. (*Eventual accuracy*) eventually, $suspected_{i}$ contains only indexes of crashed processes, for all correct $p_{i}$.
**Definition:** A failure detector FD1 is **stronger** than a failure detector FD2 if there exists an algorithm that builds FD2 from instances of FD1 and atomic R/W registers.