“…2) In the case N = 3, the regularity criteria results have been obtained in [26], [27], [31], and [32] in the whole space and [14] in a bounded domain. Recently, extensions of regularity criteria results by reducing the number of vector components or directions of derivatives have been obtained for various fluid dynamics partial differential equations: [4], [5], and [21] in the case of the NSE, [6], [35] in the case of the MHD system and [34] in the case of active scalars.…”