Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Shoyimardonov, S"'
Autor:
Shoyimardonov, S. K., Rozikov, U. A.
In this paper, we examine a specific class of quadratic operators. For these operators, we identified all fixed points and categorized their types in the general case. Our analysis revealed that there are no attractive fixed points except the origin.
Externí odkaz:
http://arxiv.org/abs/2409.13450
Autor:
Shoyimardonov, S. K., Rozikov, U. A.
In this paper, we study discrete dynamics of phytoplankton-zooplankton system with Holling type II and Holling type III predator functional responses. The stability of positive fixed points are investigated. By finding invariant sets, the convergence
Externí odkaz:
http://arxiv.org/abs/2408.13804
In this paper we study the discrete-time dynamical systems associated with gonosomal algebras used as algebraic model in the sex-linked genes inheritance. We show that the class of gonosomal algebras is disjoint from the other non-associative algebra
Externí odkaz:
http://arxiv.org/abs/2304.01540
Autor:
Shoyimardonov, S. K.
Publikováno v:
Uzbek Mathematical Journal, 2021, Vol.65, Issue 2, pp.153-162
We consider a discrete-time epidemic SISI model in case when the population size is a constant, so the per capita death rate is equal to per capita birth rate. The evolution operator of this model is a non-linear operator which depends on seven param
Externí odkaz:
http://arxiv.org/abs/2111.13430
Autor:
Rozikov, U. A., Shoyimardonov, S. K.
The Susceptible-Exposed-Infectious-Recovered (SEIR) model is applied in several countries to ascertain the spread of the coronavirus disease 2019 (COVID-19). We consider discrete-time SEIR epidemic model in a closed system which does not account for
Externí odkaz:
http://arxiv.org/abs/2105.00238
Autor:
Rozikov, U. A., Shoyimardonov, S. K.
We consider the Leslie's prey-predator model with discrete-time. This model is given by a non-linear evolution operator depending on five parameters. We show that this operator has two fixed points and define type of each fixed point depending on the
Externí odkaz:
http://arxiv.org/abs/2001.01497
In this paper, we initiate the study of a discrete-time dynamical system modelling a trophic network connecting the three types of plankton (phytoplankton, zooplankton, mixoplankton) and bacteria. The nonlinear operator V associated with this dynamic
Externí odkaz:
http://arxiv.org/abs/2001.01182
Autor:
Rozikov, U. A., Shoyimardonov, S. K.
We consider a discrete-time dynamical system generated by a nonlinear operator (with four real parameters $a,b,c,d$) of ocean ecosystem. We find conditions on the parameters under which the operator is reduced to a $\ell$-Volterra quadratic stochasti
Externí odkaz:
http://arxiv.org/abs/1805.07111
Autor:
Rozikov, U. A., Shoyimardonov, S. K.
Publikováno v:
Journal of Applied Nonlinear Dynamics. 12:327-337
The Susceptible-Exposed-Infectious-Recovered (SEIR) model is applied in several countries to ascertain the spread of the coronavirus disease 2019 (COVID-19). We consider discrete-time SEIR epidemic model in a closed system which does not account for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f89afc60846015aeb4b62770fe6c9ad7
https://doi.org/10.5890/jand.2023.06.010
https://doi.org/10.5890/jand.2023.06.010
Autor:
Rozikov, U. A.1,2,3 rozikovu@yandex.ru, Shoyimardonov, S. K.1 shoyimardonov@inbox.ru, Varro, R.4 richard.varro@umontpellier.fr
Publikováno v:
Nonlinear Studies. 2021, Vol. 28 Issue 2, p585-600. 16p.