Geometrical properties of a family of compactifications
نویسندگان
چکیده
We study the benefits of the explicit formulas of a parametrized family of bijections and the explicit formula of a certain metric. These formulas are induced by a family of compactifications of C that ”account for all arguments of infinity”. This family of bijections map the union of C and a continuum of ideal points onto a family of spherical bowls. This family of bijections are shown to give rise to a multitude of expressions that are ”invariant with respect to independent rotations”. These expressions help us generalize certain geometrical properties that are associated with the stereographic projection. Application of the metric to the approximation of unbounded functions is also demonstrated. M.S.C. 2000: 30C99, 32J05.
منابع مشابه
UNIVERSAL COMPACTIFICATIONS OF TRANSFORMATION SEMIGROUPS
We extend the notion of semigroup compactification to the class of transformation semigroups, and determine the compactifications which are universal with respect to some topological properties.
متن کاملLattice of compactifications of a topological group
We show that the lattice of compactifications of a topological group $G$ is a complete lattice which is isomorphic to the lattice of all closed normal subgroups of the Bohr compactification $bG$ of $G$. The correspondence defines a contravariant functor from the category of topological groups to the category of complete lattices. Some properties of the compactification lattice of a topological ...
متن کاملBeyond Twisted Tori
Exploiting the fact that Kaluza–Klein monopoles and the associated generalized orbifold planes are sources for geometrical fluxes, ω, we show that the standard constraint ω ω = 0, valid for superstring compactifications on twisted tori, can be consistently relaxed. This leads to novel possibilities for constructing superstring models with fluxes and localized sources, as well as for stabilizing...
متن کاملAbout remainders in compactifications of paratopological groups
In this paper, we prove a dichotomy theorem for remainders in compactifications of paratopological groups: every remainder of a paratopological group $G$ is either Lindel"{o}f and meager or Baire. Furthermore, we give a negative answer to a question posed in [D. Basile and A. Bella, About remainders in compactifications of homogeneous spaces, Comment. Math. Univ. Caroli...
متن کاملGeneralized string compactifications with spontaneously broken supersymmetry
The Narain lattice construction of string compactifications is generalized to include spontaneously broken supersymmetry. Consistency conditions from modular invariance and Lorentz symmetry are solved in full generality. This framework incorporates models where supersymmetry breaking is inversely proportional to the radii of compact dimensions. The enhanced lattice description, however, might a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007