# Kuttler-Sigillito's Inequalities and Rellich-Christianson Identity

@inproceedings{Berge2021KuttlerSigillitosIA, title={Kuttler-Sigillito's Inequalities and Rellich-Christianson Identity}, author={Stine Marie Berge}, year={2021} }

Abstract. This article has two main objectives. The first one is to show Kuttler-Sigillito’s type inequalities involving the mixed Neumann-Dirichlet, mixed Steklov-Dirichlet, and mixed Robin-Dirichlet eigenvalue problems. We will provide examples on e.g. squares and balls for the inequalities presented. Next we will show a Rellich identity for the mixed Neumann-Dirichlet problem. This identity will be used to prove a Rellich-Christianson identity for the Neumann-Dirichlet problem.

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