The Operator Valued Autoregressive Filter Problem and the Suboptimal Nehari Problem in Two Variables
The p-harmonic boundary for finitely generated groups and the first reduced \ell_p-cohomology
The past and future wave operators on the singular spectrum
The Paulsen Problem in Operator Theory
The paving conjecture is equivalent to the paving conjecture for triangular matrices
The Pelczynski property for tight subspaces
The Penalty Method for Variational Inequalities with Nonsmooth Unbounded Operators in Banach Space
The periodic complex method in interpolation spaces
The Perron-Frobenius Theorem for Homogeneous, Monotone Functions
The Petrovskii correctness and semigroups of operators
The Phase Derivative Around Zeros of the Short-Time Fourier Transform
The polynomial property (V)
The Pompeiu Problem and Discrete Groups
The possible shapes of numerical ranges
The principle of local reflexivity for operator ideals and its implications
The problem of deficiency indices for discrete Schrödinger operators on locally finite graphs
The product of matrix subspaces
The proportional UAP characterizes weak Hilbert spaces
The quadratic Fock functor
The Rademacher cotype of operators from $l_\infty^N$