5 citations · 26 across the 16 of their papers we have counts for
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math.AP2019
On the numerical range of sectorial forms
Antonius Frederik Maria ter Elst, Joachim Rehberg, Alexander Linke
We provide a sharp and optimal generic bound for the angle of the sectorial form associated to a non-symmetric second-order elliptic differential operator with various boundary con…
math.AP2019★ 1 cited
Hölder kernel estimates for Robin operators and Dirichlet-to-Neumann operators
A. F. M. ter Elst, M. F. Wong
Consider the elliptic operator \[ A = - \sum_{k,l=1}^d \partial_k \, c_{kl} \, \partial_l + \sum_{k=1}^d a_k \, \partial_k - \sum_{k=1}^d \partial_k \, b_k + a_0 \] on a bounded co…
math.SP2019★ 3 cited
Jordan chains of elliptic partial differential operators and Dirichlet-to-Neumann maps
J. Behrndt, A. F. M. ter Elst
Let be a bounded open set with Lipschitz boundary . It will be shown that the Jordan chains of m-sectorial second-order elliptic partial differential operat…