H.Ghahremani-Gol, A. Razavi, "Ricci flow as automorphisms of the Lie algebra on simply connected three dimensional Lie groups", 8the Seminar on Geometry and Topology, 2015/12/17 Hajar Ghahremani-Gol, Asadollah Razavi, "Ricci flow of Einstein-like metrics on the four dimensional pseudo-Riemannian homogeneous spaces ", چهل و هشتمين کنفرانس رياضي ايران, 2017/08/25 Hajar Ghahremani-Gol, Asadollah Razavi, "Ricci flow on three-dimensional Lorentzian manifolds admitting a parallel null vector field ", The 9th Seminar on Geometry and Topology, 2017/07/27 Hajar Ghahremani-Gol, "Ricci almost soluiton on Conformally flat pr-waves manifolds", 49th Annual Iranian Mathematics Conference, 2018/08/26 Hajar Ghahremani-Gol, "Stationary solutions of the Euler equation on Three-dimensional Lorentzian symmetric space", 49th Annual Iranian Mathematics Conference, 2018/08/26 Reihaneh Ahmadzadeh, Hajar Ghahremani-Gol, "Almost Ricci solitons on Ricci-parallel pr-wave manifolds ", 50th Annual Iranian Mathematics Conference (aimc50) , 2019/08/27 Reihaneh Ahmadzadeh, Hajar Ghahremani-Gol, "Almost Ricci solitons on static manifolds", 50th Annual Iranian Mathematics Conference (aimc50) , 2019/08/27 Hajar Ghahremani-Gol, Elahe Kazazi, "Incompressible Euler equation on the three-dimensional manifolds", The 11 th Seminar On Geometry And Topology, 2021/07/21 Hajar Ghahremani-Gol, Elahe Kazazi, "Solutions of Euler equations on the two-dimensional sphere", 52nd Annual Iranian Mathematics Conference, 2021/09/02 Mahsa Abbasvand, Hajar Ghahremani-Gol, "Vorticity on the compact Riemannian manifolds", 52nd Annual Iranian Mathematics Conference, 2021/09/02