In this paper, we construct some 1(1/2)-designs, which are also known as partial geometric designs, using totally isotropic subspaces of the unitary space. Phrthermore, these 1(1/2)-designs yield six infinite fami...In this paper, we construct some 1(1/2)-designs, which are also known as partial geometric designs, using totally isotropic subspaces of the unitary space. Phrthermore, these 1(1/2)-designs yield six infinite families of directed strongly regular graphs.展开更多
文摘In this paper, we construct some 1(1/2)-designs, which are also known as partial geometric designs, using totally isotropic subspaces of the unitary space. Phrthermore, these 1(1/2)-designs yield six infinite families of directed strongly regular graphs.