%0 Journal Article %T Periodic Coulomb Dynamics of Three Equal Negative Charges in the Field of Equal Positive Charges Fixed in Octagon Vertices %A Skrypnik %A W. I. %J - %D 2020 %R https://doi.org/10.1155/2020/3547136 %X Periodic solutions of the Coulomb equation motion for three equal negative point charges in the field of six equal positive point charges fixed in vertices of a convex octagon are found. The system possesses an equilibrium configuration. The Lyapunov center theorem is applied %U https://www.hindawi.com/journals/amp/2020/3547136/