2 problems

Let $S_1,\ldots,S_4$ denote the four short edges of the truncated square, and let ${\bf Q}_{\mathrm{b}}$ be the prescribed Dirichlet boundary value on these edges. Although these e…

Let the square have edge length $\lambda$, with its vertices truncated so that the domain has four long edges inherited from the square and four artificial short edges connecting t…