Abstract: | In most extant studies, symplectic graphs are defined by 1-dimensional subspaces and their orthogonality. In this paper, the symplectic graph is defined by 2-dimensional non-isotropic subspaces and their intersection. The symplectic graph is shown to be a 4-Deza graph. While the first subconstituent is shown to be a 4-Deza graph when and a 3-Deza graph when , the second subconstituent is not regular, and the third subconstituent is a 4-Deza graph except in the case , when it is empty. |