k-set agreement with limited accuracy failure detectors
Achour Mostéfaoui, Michel Raynal · 2000
Let the scope of the accuracy property of an unreliable failure detector be the number x of processes that may not suspect a correct process. The scope notion gives rise to new classes of failure detectors among which we consider Sx and ⋄Sx in this paper (Usual failure detectors consider an implicit scope equal to n, the total number of processes).