Bifurcation Behavior of Dn-Equivariant Systems
The general framework of the group-theoretic bifurcation theory has been presented in the previous chapter. In this chapter, it is applied to the simplest group, the dihedral group D n , which represents the symmetry of the regular n-sided polygon. This is based on standard studies of the bifurcation behavior of a D n -equivariant system (Sattinger, 1979, 1983 , ; Fujii, Mimura, and Nishiura, 1982 ; Golubitsky, Stewart, and Schaeffer, 1988 ; Healey, 1985, 1988 , ; Delinitz and Werner, 1989 ; Ikeda, Murota, and Fujii, 1991 ). A few remarks are given about a system equivariant to a cyclic group C n , which has a partial symmetry of D n . While simple critical points and double bifurcation points appear inherently in D n - and C n -equivariant systems, emphasis naturally is to be placed on the double bifurcation points, because most of the results in Chapters 2 and 3 are applicable to the simple critical points of these systems.
KeywordsIrreducible Representation Bifurcation Point Dihedral Group Reciprocal System Bifurcation Equation
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