Multilinear map Bilinear form A bilinear form is a multilinear map from a vector space to its underlying field , linalg i.e. linear in both arguments separately Further terminology A bilinear form is called symmetric iff . A bilinear form is called nondegenerate iff is an isomorphism, equivalently for all implies . Properties Correspondence between quadratic forms and symmetric bilinear forms away from 2 See also Quadratic space tidy | en | sembr