New posts in Sp.Spectral Theory

Intuitively, what does a graph Laplacian represent?

Spectral symmetry of a certain structured matrix

Algebraic graph invariant $\mu(G)$ which links Four-Color-Theorem with Schrödinger operators: further topological characterizations of graphs?

Compact operator without eigenvalues?

Fiedler vector, what else?

Differentiability of eigenvalues of positive-definite symmetric matrices

Smoothness of finite-dimensional functional calculus

Matrix rescaling increases lowest eigenvalue?

Eigenvalues of Laplace-Beltrami on half sphere

Can one hear the (topological) shape of a drum?