C*-algebras associated with some second order differential operators

Can One Hear Fastening of a Rod?

Can one see the fundamental frequency of a drum?

Can you hear the fractal dimension of a drum?

Canonical systems and finite rank perturbations of spectra

Casimir effect for phi-4 theory in the flat homogeneous Clifford-Klein space-times

Cayley-Hamilton Decomposition and Spectral Asymmetry

Characterization of the spectrum of irregular boundary value problem for the Sturm-Liouville operator

Classification of Ramification Systems for Symmetric Groups

Closed nodal lines and interior hot spots of the second eigenfunction of the Laplacian on surfaces

Closest Spacing of Eigenvalues

CMV matrices with asymptotically constant coefficients. Szegö over Blaschke class, Scattering Theory

CMV matrices: Five years after

Cohomologie $L^{p}$ et formes harmoniques

Coincidence of length spectra does not imply isospectrality

Comment on `The tan θ theorem with relaxed conditions', by Y. Nakatsukasa

Commutation Methods for Schroedinger Operators with Strongly Singular Potentials

Commutators, eigenvalue gaps, and mean curvature in the theory of Schrödinger operators

Commutators, Spectral Trace Identities, and Universal Estimates for Eigenvalues

Commuting self-adjoint extensions of symmetric operators defined from the partial derivatives