A note on a regularity criterion for the Navier–Stokes equations
Tom 122 / 2019
                    
                    
                        Annales Polonici Mathematici 122 (2019), 193-199                    
                                        
                        MSC: Primary 35Q30; Secondary 76D05.                    
                                        
                        DOI: 10.4064/ap180826-22-11                    
                                            
                            Opublikowany online: 23 April 2019                        
                                    
                                                Streszczenie
We show that if $u$ is a solution of the Navier–Stokes equations in the whole three-dimensional space and $\partial _3 u \in L^p(0,T;L^q(\mathbb {R}^3))$, $T \gt 0$, where $2/p+3/q=1+3/q$ and $q \in (3,10/3]$, then $u$ is regular on $(0,T]$.
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            