Non-Degenerate Ultrametric Diffusion
  General non-degenerate p-adic operators of ultrametric diffusion are introduced. Bases of eigenvectors for the introduced operators are constructed and the corresponding eigenvalues are computed. Properties of the corresponding dynamics (i.e. of the ultrametric diffusion) are investigated. 
S.V. Kozyrev, V.Al. Osipov, V.A. Avetisov