An Analysis of the Entire Functions Associated with the Operator of the KdV Equation
Abstract
Abstract. It is well known that the controllability property of partial differential equations (PDEs) is closely linked to the proof of an observability inequality for the adjoint system, which, sometimes, involves analyzing a spectral problem associated with the PDE under consideration. In this work, we study a series of spectral issues that ensure the controllability of the renowned Korteweg-de Vries equation on star-graph. This investigation reduces to determining when certain functions, associated with this spectral problem, are entire. The novelty here lies in presenting this detailed analysis in the context of a star graph structure.
Fields of Study & Subjects
advanced mathematical theories
Meromorphic and Entire Functions
Differential Equations and Boundary Problems
Publication details
- Journal / source
- SIAM Journal on Mathematical Analysis
- Volume
- 58
- Issue
- 3
- Pages
- 2067–2110
- Publication date
- 4 May 2026
- Language
- EN