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math.AP2022★ 1 cited
Quantitative Runge type approximation theorems for zero solutions of certain partial differential operators
Andreas Debrouwere, Thomas Kalmes
We prove quantitative Runge type approximation results for spaces of smooth zero solutions of several classes of linear partial differential operators with constant coefficients. A…
math.FA2022★ 6 cited
Linear topological invariants for kernels of convolution and differential operators
Andreas Debrouwere, Thomas Kalmes
We establish the condition for smooth kernels of various types of convolution and differential operators. By the - splitting theorem of Vogt and Wagner, this impli…