منابع مشابه
Universal Homotopy Theories
Model categories were introduced by Quillen [Q] to provide a framework through which one could apply homotopy theory in various settings. They have been astonishingly successful in this regard, and in recent years one of the first things one does when studying any homotopical situation is to try to set up a model structure. The aim of this paper is to introduce a new, but very basic, tool into ...
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Begin with a small category C. The goal of this short note is to point out that there is such a thing as a ‘universal model category built from C’. We describe applications of this to the study of homotopy colimits, the Dwyer-Kan theory of framings, to sheaf theory, and to the homotopy theory of schemes.
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متن کاملHomotopy Quantum Field Theories
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ژورنال
عنوان ژورنال: Advances in Mathematics
سال: 2001
ISSN: 0001-8708
DOI: 10.1006/aima.2001.2014