Contents

1. Introduction

2. The Abstract Krein–von Neumann Extension

3. The Abstract Krein–von Neumann Extension and its Connection to an Abstract Buckling Problem

4. Trace Theory in Lipschitz Domains

6. Regularized Neumann Traces and Perturbed Krein Laplacians

7. Connections with the Problem of the Buckling of a Clamped Plate

8. Eigenvalue Estimates for the Perturbed Krein Laplacian