Gradient systems on coupled cell networks

Autor(es)

Manoel, Miriam ^[1] ; Roberts, Mark ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ICMC, Dept Math, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Surrey, Dept Math, Guildford GU2 7XH, Surrey - England

^[3] African Inst Math Sci, Arusha - Tanzania

• Tipo de documento: Artigo Científico
• Fonte: Nonlinearity; v. 28, n. 10, p. 3487-3509, OCT 2015.
• Citações Web of Science: 2

Resumo

For networks of coupled dynamical systems we characterize admissible functions, that is, functions whose gradient is an admissible vector field. The schematic representation of a gradient network dynamical system is of an undirected cell graph, and we use tools from graph theory to deduce the general form of such functions, relating it to the topological structure of the graph defining the network. The coupling of pairs of dynamical systems cells is represented by edges of the graph, and from spectral graph theory we detect the existence and nature of equilibria of the gradient system from the critical points of the coupling function. In particular, we study fully synchronous and 2-state patterns of equilibria on regular graphs. These are two special types of equilibrium configurations for gradient networks. We also investigate equilibrium configurations of S-1-invariant admissible functions on a ring of cells. (AU)

• Processo FAPESP: 13/11108-7 - Simetrias de funções em redes e de aplicações em espaços de Minkowski
• Beneficiário: Míriam Garcia Manoel
• Modalidade de apoio: Bolsas no Exterior - Pesquisa