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Non-Archimedean reaction-ultradiffusion equations and complex hierarchic systems. (English) Zbl 1397.80009

The article is about ultradiffusion in complex hierachical systems; it generalizes results obtained by V. A. Avetisov et al. [J. Phys. A, Math. Gen. 32, No. 50, 8785–8791 (1999; Zbl 0957.82034); Dokl. Math. 60, No. 2, 271–274 (1999; Zbl 1037.60089); J. Phys. A, Math. Gen. 35, No. 2, 177–189 (2002; Zbl 1038.82077); ibid. 36, No. 15, 4239–4246 (2003; Zbl 1049.82051); J. Phys. A, Math. Theor. 42, No. 8, Article ID 085003, 18 p. (2009; Zbl 1162.82010)]. To describe these (protein-like) systems from a mathematical point of view, \(p\)-adic analysis is used. The description of reaction-diffusion processes in such systems reduces to Markovian random walks. The author studies not only ultradiffusion equations but their finite-dimensional analogue as well and proves the convergence of this analogue to the initial problem. After a quite lengthy mathematical derivation, a theorem about the existence and uniqueness of the Cauchy problem for ultradiffusion-reaction equations is formulated and proved.

MSC:

80A99 Thermodynamics and heat transfer
11S80 Other analytic theory (analogues of beta and gamma functions, \(p\)-adic integration, etc.)
12J12 Formally \(p\)-adic fields
45K05 Integro-partial differential equations
46S10 Functional analysis over fields other than \(\mathbb{R}\) or \(\mathbb{C}\) or the quaternions; non-Archimedean functional analysis
60J60 Diffusion processes
82B41 Random walks, random surfaces, lattice animals, etc. in equilibrium statistical mechanics

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