Minakshisundaram–Pleijel zeta function

The Minakshisundaram-Pleijel zeta function is a mathematical concept that arises in the study of the spectral theory of differential operators, particularly in the context of boundary value problems and the behavior of eigenvalues of differential equations. Specifically, for a differential operator defined on a certain domain (like a bounded interval or a bounded region in higher dimensions), the Minakshisundaram-Pleijel zeta function serves as a tool to encode the distribution of eigenvalues.