arXiv subjects
Publications and source records attributed to Monire Mikaeili Nia.
We investigate the heat equation with a time-dependent, anisotropic, and potentially singular diffusivity tensor. Since weak (in the Sobolev sense) or distributional solutions may not exist in this setting, we employ the framework of very weak solutions to establish the existence and uniqueness of solutions to the heat equation with singular, anisotropic, time-dependent diffusivity.
We investigate the heat equation with a time-dependent, anisotropic, and potentially singular diffusivity tensor. Since weak (in the Sobolev sense) or distributional solutions may not exist in this setting, we employ the framework of very weak solutions to establish the existence and uniqueness of solutions to the heat equation with singular, anisotropic, time-dependent diffusivity.
The class of nonlinear integral equations on the positive half-line with a monotone operator of Hammerstein type is studied. With various partial representations of the corresponding kernel and nonlinearity, this class of equations has applications in the dynamic theory of $p$-adic strings, in the kinetic theory of gases, in the theory of radiation transfer and in the mathematical theory of the geographical spread of epidemic diseases. A constructive theorem for the existence of a nontrivial bounded solution is proved. The asymptotic behavior of the constructed solution at infinity is studied. We also prove a theorem for the uniqueness of a solution in the class of nonnegative nontrivial and bounded functions. At the end of the work, specific particular examples of the kernel and nonlinearity of this class of equations are given, which are of independent interest.
In this study, $(1,1)-$weak type boundedness of square function $S_{α,ψ}$ is obtained by using Nazarov-Treil and Volberg technique. Also using this result, the $(1,1)-$ weak type boundedness of $g^{*}_{λ,ψ}$ operator is investigated.