Linear and multilinear algebra; matrix theory -- Research exposition (monographs, survey articles) Conic sections 2 Ellipse 2 Functions of a complex variable -- Function theory on the disc -- Blaschke products 2 Geometry -- Analytic and descriptive geometry -- Questions of classical algebraic geometry 2 Geometry -- Real and complex geometry -- Elementary problems in Euclidean geometries 2 Geometry -- Research exposition (monographs, survey articles) 2 more ... Geometry, Projective 2 Linear and multilinear algebra; matrix theory -- Basic linear algebra -- Norms of matrices, numerical range, applications of functional analysis to matrix theory 2 Operator theory -- General theory of linear operators -- General (adjoints, conjugates, products, inverses, domains, ranges, etc.) 2 Operator theory -- General theory of linear operators -- Numerical range, numerical radius 2 Combinatorics -- Graph theory -- Dominating sets, independent sets, cliques 1 Combinatorics -- Graph theory -- Graphs and linear algebra (matrices, eigenvalues, etc.) 1 Combinatorics -- Graph theory -- Signed and weighted graphs 1 Combinatorics -- Research exposition (monographs, survey articles) 1 Coniques 1 Eigenvalues 1 Ellipse (Mathématiques) 1 Géométrie projective 1 Graph theory 1 Inverse problems (Differential equations) 1 Linear and multilinear algebra; matrix theory -- Basic linear algebra -- Eigenvalues, singular values, and eigenvectors 1 Linear and multilinear algebra; matrix theory -- Basic linear algebra -- Inverse problems 1 Linear and multilinear algebra; matrix theory -- Special matrices -- Hermitian, skew-Hermitian, and related matrices 1 ellipses 1 less ...