Bistability and chaos in the discrete two-gene Andrecut-Kauffman model - Publikacja - MOST Wiedzy

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Bistability and chaos in the discrete two-gene Andrecut-Kauffman model

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We conduct numerical analysis of the 2-dimensional discrete-time gene expression model originally introduced by Andrecut and Kauffman (Phys. Lett. A 367: 281–287, 2007). In contrast to the previous studies, we analyze the dynamics with different reaction rates α1 and α2 for each of the two genes under consideration. We explore bifurcation diagrams for the model with α1 varying in a wide range and α2 fixed. We detect chaotic dynamics by means of the positive maximum Lyapunov exponent, and we scan through selected parameters to detect those combinations for which chaotic dynamics can be found in the model. Moreover, we find bistability in the model, that is, the existence of two disjoint attractors. Both situations are interesting from the point of view of applications, as they imply unpredictability of the dynamics encountered. Finally, we show some specific values of parameters of the model in which the two attractors are of different kind (a periodic orbit and a chaotic attractor) or of the same kind (two periodic orbits or two chaotic attractors).

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B
ISSN: 1531-3492
Język:
angielski
Rok wydania:
2025
Opis bibliograficzny:
Rosman M., Palczewski M., Pilarczyk P., Bartłomiejczyk A.: Bistability and chaos in the discrete two-gene Andrecut-Kauffman model// DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B -, (2025),
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.3934/dcdsb.2025028
Źródła finansowania:
Weryfikacja:
Politechnika Gdańska

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