Unitary equivalence to a complex symmetric matrix: a modulus criterion

Unitary equivalence to a complex symmetric matrix: an algorithm

Unitary equivalence to a complex symmetric matrix: geometric criteria

Unitary equivalence to a complex symmetric matrix: low dimensions

Unitary equivalence to truncated Toeplitz operators

Unitary interpolants and factorization indices of matrix functions

Unitary loops and factorization

Unitary N-dilations for tuples of commuting matrices

Unitary orbits of Hermitian operators with convex or concave functions

Unitary perturbations of compressed N-dimensional shifts

Unitary Processes with Independent Increments

Unitary processes with independent increments and representations of Hilbert tensor algebras

Unitary Representations and Osterwalder-Schrader Duality

Unitary Representations of Lie Groups with Reflection Symmetry

Unitary systems and wavelet sets

Unitary systems, wavelet sets, and operator-theoretic interpolation of wavelets and frames

Universal commutative operator algebras and transfer function realizations of polynomials

Universal Non-Completely-Continuous Operators

Universal Spectra and Tijdeman's Conjecture on Factorization of Cyclic Groups

Universality of Newton's method