Regularity criteria for the 3D magneto-micropolar fluid equations in the Morrey-Campanato space

In this paper, some improved regularity criteria for the 3D magneto- micropolar fluid equations are established in Morrey- Campanato spaces. It is proved that if the velocity field satisfies u is an element of L2/1-T (0, T; (M) over dot(p,3/T)(R-3)) with r is an element of (0, 1) or u is an element of C (0, T;. (M) over dot(p,3/T)(R-3)) or the gradient field of velocity satisfies del u is an element of L2/2-r(0, T; (M) over dot(p,3/r)(R-3)) with r is an element of (0, 2), then the solution remains smooth on [0, T]. By the embedding L-3/r subset of (M) over dot(p,3/r), we see that our result is an improvement of ( Yuan in Acta Mathematica Scientia, to appear).