Conic and Quadric surfaces
arXiv:1303.5369
Abstract
There are two problems Analytical Geometry with facing anyone who studies this discipline: define the nature of the locus represented by the general equation 2do degree in two or three variables: That curve represents the plane? What surface is in space? These two problems are posed and solved by applying the study of matrices and spectral theory
arXiv commentin Spanish, 126 figures