Projection Constants of a Class of Codimension-2 Subspaces in l2 n


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Abstract

Relative projection constants and strong unicity constants for a certain class of projection operators on the space l2
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 l2
n
.

About the authors

O. M. Martynov

Zhukov Air and Space Defense Academy

Author for correspondence.
Email: olegmartynov@yandex.ru
Russian Federation, Tver

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