%0 Journal Article %T Lie symmetries of fundamental solutions of one (2+1)-dimensional ultra-parabolic Fokker--Planck--Kolmogorov equation %A Sergii Kovalenko %A Valeriy Stogniy %A Maksym Tertychnyi %J Mathematics %D 2014 %I arXiv %X A (2+1)-dimensional linear ultra-parabolic Fokker--Planck--Kolmogorov equation is investigated from the group-theoretical point of view. By using the Berest--Aksenov approach, an algebra of invariance of fundamental solutions of the equation is found. A fundamental solution of the equation under study is computed in an explicit form as a weak invariant solution. %U http://arxiv.org/abs/1408.0166v1