It is shown that the conforming $Q_{k+1,k}\times Q_{k,k+1}-Q_{k}^{-}$ mixed element is stable, and provides optimal order of approximation for the Stokes equations ...

A numerical scheme for computing approximations to the inf-sup constant of the divergence operator in bounded Lipschitz polytopes in ℝ𝑛 is proposed. The method is based on a conforming approximation ...