نتایج جستجو برای: cech compactification

تعداد نتایج: 3791  

Journal: :Science China Physics, Mechanics & Astronomy 2014

Journal: :Dissertationes Mathematicae 2011

Journal: :Journal of Physics: Conference Series 2021

Journal: :Zeszyty Naukowe 2022

Objective: To present a multidimensional scale for identifying strategic thinkers and profiling strategists. Research Design & Methods: The multi-method approach used included systematic literature review, qualitative studies (biographical IDI’s), quantitative research (a survey). Findings: First, the review conceptualised operationalised multi-dimensional construct of thinking. Second, bio...

2003
SHMUEL FRIEDLAND PEDRO J. FREITAS

Let GL(n, C) ⊃ Un be the group of n× n complex valued invertible matrices and the subgroup of unitary matrices respectively. In this paper we study Finsler p-metrics on the homogeneous space Xn = GL(n, C)/Un for p ∈ [1,∞], which are induced by Schatten p-norms on the tangent bundle of Xn and are invariant under the action of GL(n, C). We show that for p ∈ (1,∞) the Busemann p-compactification i...

1993
Alon E. Faraggi

I discuss the correspondence between realistic four dimensional free fermionic models and Z2 × Z2 orbifold compactification. I discuss the properties of the Z2 × Z2 orbifold that are reflected in the realistic free fermionic models. I argue that the properties of the realistic free fermionic models arise due to the underlying Z2×Z2 orbifold compactification with nontrivial background fields. I ...

2008
SABIN CAUTIS

Necessary and sufficient conditions are given (in terms of monodromy) for extending a family of smooth curves over an open subset U ⊂ S to a family of stable curves over S. More precisely, we introduce the abelian monodromy extension (AME) property and show that the standard Deligne-Mumford compactification is the unique, maximal AME compactification of the moduli space of curves. We also show ...

2006
Michael R. Douglas Shamit Kachru

We review recent work in which compactifications of string and M theory are constructed in which all scalar fields (moduli) are massive, and supersymmetry is broken with a small positive cosmological constant, features needed to reproduce real world physics. We explain how this work implies that there is a “landscape” of string/M theory vacua, perhaps containing many candidates for describing r...

Journal: :Journal of Pure and Applied Algebra 1995

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1982

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