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**On the relation between phase-type distributions and positive systems.**
*(English)*
Zbl 1350.93030

Summary: The relation between phase-type representation and positive system realization in both the discrete and continuous time is discussed. Using the Perron-Frobenius theorem of nonnegative matrix theory, a transformation from positive realization to phase-type realization is derived under the excitability condition. In order to explain the connection, some useful properties and characteristics such as irreducibility, excitability, transparency, and order reduction for positive realization and phase-type representation are discussed. In addition, the connection between the phase-type renewal process and the feedback positive system is discussed in the stabilization concept.

### MSC:

93B15 | Realizations from input-output data |

15B48 | Positive matrices and their generalizations; cones of matrices |

93D15 | Stabilization of systems by feedback |

### Keywords:

phase-type representation; positive system realization; discrete-time systems; continuous-time systems; Perron-Frobenius theorem; nonnegative matrix theory
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\textit{K. Kim}, Abstr. Appl. Anal. 2015, Article ID 731261, 7 p. (2015; Zbl 1350.93030)

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### References:

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