New posts in Eigenvalues

Spectral symmetry of a certain structured matrix

Compact operator without eigenvalues?

Differentiability of eigenvalues of positive-definite symmetric matrices

What happens to eigenvalues when edges are removed?

What is known about the eigenvectors of the $2^n \times 2^n$ Hadamard matrix?

Lower bound on the entries of the Perron vector

Does there exist a nonsingular graph for which the determinant of its adjacency matrix remains the same upon deleting a vertex?

Checking positive semi-definiteness of integer matrix

Finding the nearest matrix with real eigenvalues

Eigenvalues of a matrix with entries involving combinatorics