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We investigate the asymptotic behavior of total down time of a system in which the breakdown process is an alternating renewal process, under the assumption that the probability of breakdown in a single cycle converges to zero. Using a theorem of R. Serfozo [J. Appl. Probab. 17 (1980), no. 2, 423–431; MR0568952], we find necessary and sufficient conditions for the convergence of the total down time...
Author introduction (translated from the Polish): "This paper is an attempt to extend Galerkin's variable directions method ADG, used in the solution of differential equations [see M. Dryja , same journal 15 (1979), 5–23; MR0549983; G. Fairweather , Finite element Galerkin methods for differential equations, Chapter 6, Dekker, New York, 1978; MR0495013] to inequalities. The numerical properties...
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