Covariant Symbolic Calculi on Real Symmetric Domains.- Singular Integral Operators with Piecewise Almost Periodic Coefficients and Carleman Shift.- On the Essential Spectrum of Toeplitz Operators with Semi-Almost Periodic Symbols.- Well-Posedness of Diffraction Problems Involving n Coplanar Strips.- Factorization of Matrix Functions and the Resolvents of Certain Operators.- Finite Difference Cauchy-Riemann Operators and Their Fundamental Solutions in the Complex Case.- Factorization Theorem for the Transfer Function Associated with an Unbounded Non-Self-Adjoint 2 × 2 Operator Matrix.- Boundedness of Some Convolution and Twisted Convolution Operators.- Invertibility of Functional Operators with Slowly Oscillating Non-Carleman Shifts.- Hadamard-Type Integral Equations and Fractional Calculus Operators.- Factorization of Singular Integral Operators with a Carleman Shift via Factorization of Matrix Functions.- Single Elements of Operator Algebras.- Skew Incidence Half Plane Diffraction Problems: Particular Aspects of the Factorization Problem.- Aperiodic Wave Diffraction by a Half-Plane.- An Axiomatic Approach to the Limit Operators Method.- Algebras of Approximation Sequences: Structure of Fractal Algebras.- Noncanonical Factorizations of Almost Periodic Multivariable Matrix Functions.- Criterion for the Fredholmness of Singular Operators with Piecewise Continuous Coefficients in Generalized Hölder Spaces with Weight.- On Inversion of Fractional Spherical Potentials by Spherical Hypersingular Operators.- An Axiomatic Approach to Stability of Approximation Sequences.