EntityQ3058226· pop 6· linked from 12 articlespolar spaceSign in to savegeometric structureConnectionsmathematicsEntitygeometryEntityInternational Standard Book NumberEntityvector spaceEntitycombinatoricsEntityisomorphismEntityfinite setEntityprojective geometryEntityquadratic formEntityJacques TitsEntitydivision ringEntityDesargues' theoremEntityprojective spaceEntityMathematical ReviewsEntitysesquilinear formEntitysymplectic vector spaceEntityPeter CameronEntitygeneralized quadrangleEntityisotropic quadratic formEntityCategoriesFamilies of setsProjective geometry