2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/165113Iosevich and Senger (2008) showed that if a subset of the d-dimensional vector space over a finite field is large enough, then it contains many k-tuples of mutually orthogonal vectors. In this note, we provide a graph theoretic proof of this result.CombinatoricsOn the number of orthogonal systems in vector spaces over finite fieldstext