In this work. we introduce a new concept of the stream function and derive the equation for the stream function in the three-dimensional case. To construct a basis in the space of solutions of the NavierStokes system. we solve an auxiliary spectral problem for the bi-Laplacian with Dirichlet conditions on the boundary. https://www.ngetikin.com/amazing-find-Bolia-Loop-Rug-limited-choice/