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:  118
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:  2025
:   .., .. // . - 2025. - . 118. - .68-79.
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(.):  equilibrium, stability, covering map, coincidence point
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(.):  The paper is dedicated to partial equilibrium stability under the small change in initial parameters of Allen type dynamic model. Partial equilibrium is an equilibrium by some subset of variables in the model. This model is described by an autonomous system of differential equations and is an extensiton of well-known Lotka Volterra equations system. Unlike Lotka Volterra equations system, this system contains the difference of two mappings the right-hand side. These mappings may have a generic form. Partial equilibrium is considered as a conicidence point of these mappings. To make a research on partial equilibrium stability we propose to apply the results of covering mappings and coincindence points theory. In conditions of sufficient conditions of equilbrium existense supply mapping in Allen type model is covering, and demand mapping is Lipschitz-continuous. Using the theorem on coincindence point stability for two mappings, one of which is covering and the other one is Lipschitz-continuous, we have proven partial equilibrium stability in the model which satisfies sufficient equilibrium existense conditions.

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