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- Klara R Janglajew, Kim G Valeev
- 2013

The paper deals with the problem of factorization of a linear differential operator with matrix-valued coefficients into a product of lower order operators of the same type. Necessary and sufficient conditions for the factorization of the considered operator are given. These conditions are obtained by using the integral manifolds approach. Some consequences… (More)

We develop a stochastic model in which a recursive formula is derived for computing the mean value of income from sales of bus tickets. The model takes into consideration basic variable costs (driver's wages and fuel for the bus) and the flow of passengers is given by a Poisson process. The recursive formula for the mean income is in the form of a system of… (More)

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