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    • Singular dynamics under a weak potential on a sphere 

      Castelli R.; Paparella F.; Portaluri A. (Nonlinear Differential Equations and Applications, 2013-12-31)
      We give a detailed analytical description of the global dynamics of a point mass moving on a sphere under the action of a logarithmic potential. We perform a McGehee-type blow-up in order to cope with the singularity of ...