J-class weighted shifts on the space of bounded sequences of complex numbers

Jacobi matrices on trees

Jean Bourgain's analytic partition of unity via holomorphic martingales

Jensen and Minkowski inequalities for operator means and anti-norms

Jensen's Inequality and majorization

John decompositions: selecting a large part

John-Nirenberg inequality and atomic decomposition for noncommutative martingales

John-Nirenberg lemmas for a doubling measure

Johnson-Lindenstrauss lemma for circulant matrices

Joint similarity to operators in noncommutative varieties

Jointly hyponormal pairs of commuting subnormal operators need not be jointly subnormal

Jones-Wassermann Subfactors for Disconnected Intervals

K-divisibility constants for some special couples

k-hyponormality of finite rank perturbations of unilateral weighted shifts

k-hyponormality of multivariable weighted shifts

k-hyponormality of powers of weighted shifts via Schur products

K-theory for algebras of operators on Banach spaces

Kaczmarz algorithm in Hilbert space and tight frames

Kadec norms on spaces of continuous functions

Kadec-Pelczynski decomposition for Haagerup L_p-spaces