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Continuation and bifurcations of concave central configurations in the four and five body-problems for homogeneous force laws

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Abstract The central configurations given by an equilateral triangle and a regular tetrahedron with equal masses at the vertices and a body at the barycenter have been widely studied in… Click to show full abstract

Abstract The central configurations given by an equilateral triangle and a regular tetrahedron with equal masses at the vertices and a body at the barycenter have been widely studied in [9] and [14] due to the phenomena of bifurcation occurring when the central mass has a determined value m ⁎ . We propose a variation of this problem setting the central mass as the critical value m ⁎ and letting a mass at a vertex to be the parameter of bifurcation. In both cases, 2D and 3D, we verify the existence of bifurcation, that is, for a same set of masses we determine two new central configurations. The computation of the bifurcations, as well as their pictures have been performed considering homogeneous force laws with exponent a − 1 .

Keywords: central configurations; bifurcations concave; homogeneous force; force laws; continuation bifurcations

Journal Title: Journal of Mathematical Analysis and Applications
Year Published: 2017

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