Homeomorphism Definition Boundary Definition Interior Definition Dimension Definition Invariance of Dimension for Euclidean Open Sets Theorem #9910 Linear-System Infinitesimal Deformations of a Smooth Divisor Geometry Hodge Diamond Symmetries for Compact Kähler Surfaces Geometry Smooth Complement Theorem for Vector Subbundles Geometry Direction Space of an Affine Subspace Is Linear Geometry Chern-Weil Connection Independence Principle Geometry Fibre Bundle Construction from Transition Functions Geometry Opposed Filtration Characterization of Pure Hodge Structures Geometry Compatibility of Chern-Weil Forms with Associated Vector Bundles Geometry Geometry Area