In order to find algebraic criteria for computing delay intervals for stability of a class of retarded differential systems
the delaydependent stability of the systems is analyzed
and the algorithms for determining the delay intervals for stability are constructed.By means of Routh-Hurwitz criteria and complete discrimination system for polynomials
on-line determining the delay intervals for stability of the systems can be realized.The algorithms can compute many delay intervals for stability of a class of multi-delay differential systems.The results improved the relevant results of some literatures
which are only applicable for some one-delay differential systems
or are able to compute only one delay interval for stability.