A sharp relative-error bound for the Helmholtz h-FEM at high frequency

For the h -finite-element method ( h -FEM) applied to the Helmholtz equation, the question of how quickly the meshwidth h must decrease with the frequency k to maintain accuracy as k increases has been studied since the mid 80’s. Nevertheless, there still do not exist in the literature any k -explic...

Ausführliche Beschreibung