Numerical Analysis, Smith–McMillan forms, Algebra and Number Theory, Pole cancellation, \(J\)-inner matrix valued functions, Applications of operator theory in chemistry and life sciences, Smith-McMillan forms, J-lossless conjugators, Moment problems and interpolation problems in the complex plane, Zeros of polynomials, rational functions, and other analytic functions of one complex variable (e.g., zeros of functions with bounded Dirichlet integral), \(J\)-lossless conjugators, Factorization theory (including Wiener-Hopf and spectral factorizations) of linear operators, Zero cancellation, Discrete Mathematics and Combinatorics, Geometry and Topology, Stability, Riccati equations, J-inner matrix valued functions, Eigenvalue problems