🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisPortuguêsРусский日本語EntityQ3555169· pop 9· linked from 137 articlesnull vectorAlso known as isotropic vectorvector that is annihilated by a quadratic formAvailable in 9 languagesEspañolFrançais日本語РусскийBahasa IndonesiaChuvashRomanianUkrainianvia Wikidata sitelinks · CC0Connectionsquadratic formEntitymathematicsEntityCategoriesLinear algebraQuadratic forms