In this paper, we introduce the operator approach for orthogonality in linear spaces. In particular, we represent the concept of orthogonal vectors using an operator associated with them, in normed linear spaces.
"Operator approach for orthogonality in linear spaces." Tbilisi Math. J. 11 (4) 103 - 112, September 2018. https://doi.org/10.32513/tbilisi/1546570889