1.3. Covering Spaces........................ 56
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چکیده
منابع مشابه
Semi-Rothberger and related spaces
In this paper our focus is to study certain covering properties in topological spaces by using semi-open covers. A part of this article deals with Rothberger-type covering properties. The notions of s-Rothberger, almost s-Rothberger, star s-Rothberger, almost star s-Rothberger, strongly star s-Rothberger spaces are defined and corresponding properties are investigated.
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Contents 1. Introduction 2 1.1. The general strategy: the cross-ratio method 2 1.2. Two sample calculations 7 1.3. Notation and Terminology 14 1.4. Summary of results 15 2. Degenerations of rational curves 17 2.1. The basic setup 17 2.2. The main results from deformation theory 20 2.3. The geometry of the Severi varieties 21 2.4. Singularities of the total space 37 3. Formulas 56 3.
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