Projection Constants of a Class of Codimension-2 Subspaces in l∞2 n

Аннотация

Relative projection constants and strong unicity constants for a certain class of projection operators on the space l_∞^2
n are found. The maximum values of strong unicity constants are calculated for the projection operators with unit norm on certain codimension-2 subspaces formed by using hyperplanes in l_∞^2
n.