Local and Global Properties of Hypersurfaces

Author: Zachariah Michielli [ profile | email ]

Abstract

Differential Geometry is essentially the study of curves, surfaces and hyper surfaces in Rn. Through the use of analytic techniques, an understanding of the geometric properties of these objects has led to profound breakthroughs in the world of applied mathematics. The most basic form which can be studied is known as a curve. These take the form that their name might imply; they can be visualized as lines that twist and turn through space with a dimension less than two. Next is the object known as a surface. Again, it can be visualized in everyday life as a coffee cup, or the roof of a house, though they also can be much more complicated. The final object of interest is the hypersurface. It is analogous to our common understanding of a regular surface in three dimensions. It is an object in Rn of degree 1 < d < n. In order to fully understand these objects, both there local and global properties must be considered. The local being that which occurs in the neighborhood of a point, while the global considers invariants over all of the domain.

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