2 papers
math.NA2023
Quadratic and cubic Lagrange finite elements for mixed Laplace eigenvalue problems on criss-cross meshes
Kaibo Hu, Jiguang Sun, Qian Zhang
In [6], it was shown that the linear Lagrange element space on criss-cross meshes and its divergence exhibit spurious eigenvalues when applied in the mixed formulation of the Lapla…
math.NA2023
Distributional Hessian and divdiv complexes on triangulation and cohomology
Kaibo Hu, Ting Lin, Qian Zhang
In this paper, we construct discrete versions of some Bernstein-Gelfand-Gelfand (BGG) complexes, i.e., the Hessian and the divdiv complexes, on triangulations in 2D and 3D. The seq…