$\rho$-Orthogonality and its preservation — revisited
Volume 99 / 2013
Banach Center Publications 99 (2013), 17-30
MSC: Primary 46B20, 46C50; Secondary 39B82.
DOI: 10.4064/bc99-0-2
Abstract
The aim of the paper is to present results concerning the $\rho$-orthogonality and its preservation (both accurate and approximate) by linear operators. We survey on the results presented in [11] and [23], as well as give some new and more general ones.
