Acta Applicandae Mathematicae. 2020.
The aim of this paper is to establish the regularity criterion of weak solutions to the 3D micropolar fluid equations by one directional derivative of the pressure in anisotropic Lebesgue spaces. We improve the regularity criterion for weak solutions previously given by Jia, Zhang and Dong in . © 2020 the Author(s), licensee AIMS Press.