A Preconditioner for FETI-DP Method of Stokes Problem with Mortar-Type CR(ℎ)−𝑃₀(ℎ) Discretization

Figure 1

Here each component of 𝐮∈𝑊^ℎ(𝛾_𝑚(𝑖)) is a (discontinuous) piecewise linear function shown (using solid lines) in the lower figure. The dashed lines (in both upper and lower figures) correspond to each component of 𝐼_𝑚𝐮. The solid lines in the upper figure correspond to each component of 𝐽_𝑚𝐮.